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Aalborg University Architecture and Design Sustainable Architecture Oct-Dec 2017 MSc01 ARC Group 6
Course title Course period Semester Course group Main supervisor Technical supervisor
Claus Kristensen Mingzhe Liu
Group members
PRELIMINARY
_______________________________ Andreas Corfitz Jensen
_______________________________ Jakob Frost Dahl
_______________________________ Karolina Tilnakova
_______________________________ Martin Bernhard Pedersen
_______________________________ Miriam Ruth Leis
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Sustainable Architecture
Reading guide This report walks through the steps of designing the proposal for the project module “Sustainable architecture” as well as the final presentation. It begins with introducing the problem statement and then different analysis of the context and user groups which has been collected in a program. The following sketching phase got kick-started by two workshops with different focus points until the midterm presentation where a concept has been presented. In the end of the report, a concluding chapter with a reflection of the final proposal and an evaluation of the process has been added. Furthermore, an appendix works as a supplement for further elaboration.
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PRELIMINARY
Abstract This report contains a proposal for a new residential building complex located North of Østerå on the fringe of Aalborg. The methodology behind the design has mainly been the integrated design process, from the initial phases with analysis until the final preparation of the presentation. Furthermore, environmentally, as well as socially sustainable initiatives have been implemented in the project. The building shape and the materials used relate to the context which has been dominated by industrial buildings and large residential blocks in the past and also today. In this context, the importance of the human scale and of creating spaces which people can relate to and find comfortable should be emphasised. By doing this Jan Gehl and his theories from “Life between buildings” has been used as a design tool to ensure a high quality of life in the spaces between. The complex should also attract the public by offering additional functions, but still keep a very clear division between the different zones.
Table of contents PRELIMINARY Introduction 4 Vision 4
PRELIMINARY
METHOD Integrated design process 5 Gordon Cullen 6 James Corner 7 SITE ANALYSIS Building site 9 Local plans 11 Vegation 13 Transport 15 Serial vision 17 Nature side 20 City side 20 Sun 22 Precipitation 22 Wind 23 Temperatures 23 Noise 24 Air pollution 24 Functions 27 Building heights 29 Morphology 31 Demographic 32 Building typography 33
Passive stategies 42 Active stategies 43 CASE ANALYSIS Regen villages 44 Nicolinehus 44 MVRDV Nieuw Bergen 45 The Mountain 45 CONCLUSION Additional function 46 Design criteria 47 ENDING Illustrations list 48 Bibliography 49
USER ANALYSIS User analysis 36 User behavior 38 DESIGN STRATEGIES AND PRINCIPLES DGNB 40 Passive and active strategies 41
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Problem The task of the first master semester’s main project is to design a mixed use housing complex at the fringe of the inner city of Aalborg. In an integrated design process, aesthetic, spatial, social, functional, logistical and technical aspects must be solved. One of the aims is to hold zero energy standards and obtain a good indoor climate, using both active and passive strategies. Furthermore, suburban qualities like privacy should be implemented in a dense urban environment while also allowing social interaction between the residents and the rest of the urban dwellers. Last, but not least, the aesthetic aspects should not be forgotten. Besides an attractive look, also the sustainability should be expressed architecturally with having a multi-sensuous architectural approach. PRELIMINARY
In order to achieve a better integration within the city context, up to onefifth of the block should contain other than residential functions. The complex should be designed with an average height of minimum three storeys and building percentage between 100% and 200%. Additionally, there have to be adequate parking facilities for both, cars and bikes. Two of the units have to be designed in detail - one dwelling for a family with two children. The other unit can either be another dwelling or one of the additional functions that have been chosen. (Lauring, 2017) Vision The project’s main goal is to offer an environment that enforces social diversity while respecting the different needs of each stage of life. To do so, an atmosphere with the comforts of a suburban detached house and the life and activity of an urban block should be created. Furthermore, a variety of indoor and outdoor spaces, where people can meet and interact should contribute to a good sense of neighbourship. However, in order to design a place that people can call home, it is also important to offer intimate areas for privacy.
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M E T HOD
In the following section, the integrated design process is developed as a method and then describing the methods that have been utilized through the different phases of the project.
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METHOD
Integrated design process The most important aspect when designing good, sustainable, high-quality architecture is to keep reflecting on the different phases during the whole process. It starts out as a problem or an idea which has to be analyzed to get an idea of the different problems and opportunities. Based on this, first design criteria can be set to be considered in the sketching phase. These principles are not set in stone, on the contrary, they should be adjusted and extended during the process. In the sketching phase, still different working methods and various scales should be used. After some time, one might realize that some of the design criteria contradict each other in a way that makes it impossible to achieve both. This might lead to new analyses which again results in new or changed principles. The specific design criteria should emerge into a concept which in the end is presented as the final design. (Knudstrup, 2004)
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Good quality architecture should not only concern aesthetics but has to consider sustainability equally. As a part of an integrated design process, also the knowledge about technical and social aspects that have been gained in former courses such as ISTA (Integrated Design of Sustainable and Tectonic Architecture) and ZEB (Zero Energy Building) should be kept in mind. Knudstrup’s five phases can be used on a large scale, concerning the entire project, but it can also be applied when making minor decisions on subparts. This ensures that one does not get bound by a specific solution without having tried others.
Analyse phase
Sketching phase
Synthesis phase
METHOD
Problem / idea
Presentation
Ill. 1
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METHOD
Gordon Cullen - Serial vision Serial vision is a method invented by Gordon Cullen which helps to determine different moods, contrasts and spatialities of a site (Cullen, 2012). The idea behind this theory is that the city or an urban environment should be designed from people’s point of view. This creates different revelations and experiences while moving through the area. Gordon Cullen’s method can be used as both, as analyzing and design factor when creating urban spaces. This method encourages diversity in typologies and spatiality since too much regularity in a large scale can appear dull. An urban context evokes the responsive emotions which affects the mind when aroused. So this should be considered whilst the environment clearly produce some kind of involuntarily emotion. There are three ways how this happens:
Content
Place This part considers the physical placement of one’s body in relation to the urban environment. In general, this means that a human is affected by exposure for example on an open square or enclosure that can be felt in a narrow street. Content ”Content” concerns how a person tends to examine the fabric of an environment such as colours, textures, scale, character, personality and uniqueness. The fabric in most cases reveals the historical development of the city and is highlighted frequently. Optics The goal is to impact the emotions using the visual sense and create a series of revelations while a person is walking through an area at a steady pace. The human mind reacts to contrasts which means that a long straight road has only a very little impact on our emotions or may affect them even negatively. Optics Content
Place
Content
Optics
Optics
Content Space between Optics Space between
Ill. 2 Space between
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Ill. 3
Ill. 4
So James Corner - Mapping and tracing To get a better understanding of the context ”mapping and tracing” has been used. These methods serve as a tool for the analysis to interpret the urban environment in either a small or a large scale (Corner, 2002). Mapping is a creative way of analyzing the existing context with different subjects in mind. It is a very low-tech way of investigating different functions, typologies, green areas and infrastructures of an area. This can be used to reveal possibilities and connections between the site and its surroundings and can help to formulate design criteria
Jan Gehl To understand urban planning, outdoor spaces and scale between humans and buildings, the danish architect and city planner Jan Gehl was used as an inspiration. He released his first book “Life between Intimate buildings” in 1970’s which has been updated where the latest is fromdistance 0 - 0,45m 2011. The principles he proposes in “Life between buildings” will be kept in mind during the design phase to ensure high quality urban spaces which relates to the human scale (Gehl, 2011).
Personal distance 0,45 - 1,30m
Social distances
METHOD
To analyze an area with mappings seem like a very low tech way of figuring out the different functions, typologies, green areas, functions, infrastructure etc. The method can help to decide different design criteria that are related to the context.
Out of touch with groundlevel
Social distances
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4th Decrease contact with groundlevel
Intimate distance
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Social contact in Social contact in different levels different levels
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of touch with groundlevel
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AN ALYS I S The following section will focus on analyzing the context and the different user groups with the methods described in the previous section. The analyzes will then be used further on in the process as criterias and parameters in the sketching phase.
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NØRRESUNDBY
LIMFJORDEN
AALBORG VESTBY UTZON CENTER NYTORV
MUSIKKENS HUS
ØSTRE ANLÆG
AALBORG CENTRUM KAROLINELUND
TRAIN STATION
ØGADEKVATERET KILDEPARKEN KENNEDY ARCADE GODSBANEAREALET
VEJGAARD
SITE
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ETERNITTEN
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Building site The project site is located on the fringe of the inner city and Øgadekvarteret. The area is primarily dominated by industrial plants and is also referred to as Håndværkerkvarteret due to the high number of do-it-yourself stores and workshops. SITE ANALYSIS
The size of the building site is approximately 8750 m2 and lies close to the busy Sønderbro which leads to the highway to Århus. Another big road close to the site is Østre Allé from which one can get on the highway towards Frederikshavn. The site is located very close to the corner of these two roads. It is also nearby many newly developed areas such as Eternitten and Godsbanen. Future plans reveal that the whole area is going to be entwined with a connecting green area all the way to Musikkenshus at the fjord (Aalborg Kommune, 2010).
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onnesensgade
g rups Kjelle
g Hammerskjølds Gade
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Ågade
Fynsgade
Fynsgade
Jyllandsgade
Jyllandsgade
Jyllandsgade
Fynsgade Samsøgade
Bormholmsgade
Jyllandsgade
Karolinelund
e Sønd rbro
Færøgade
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Håndværkervej
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Ka
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Eternitten
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Østre Alle
e rgiv ne Sy
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Vis ion sve j
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rv age
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Local plans This project is based on existing local plans and thoughts from the municipality of Aalborg in connection with the development of Håndværkerkvateret and the areas surrounding it (Aalborg Kommune, 2015).
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The city is undergoing big development around Håndværkerkvarteret and the area will become more entwined with the rest of the city. Especially Godsbanen to the northwest and Eternitten southeast of the quarter are currently undergoing major changes. In both areas, there is a rapid development of a sustainable residential neighborhood with dwellings, shops and office buildings.
The local plan allows various businesses such as offices and a warehouse to settle down in the new buildings on the corner of Østre Alle and Sønderbro (Aalborg Kommune, 2015). The former constructions on this site have already been demolished to make space for the new ones. A draft shows the different building volumes and their composition rising from the Østre Alle to the stream Østerå. These visions are also taken into consideration on the master plan. The planned construction will comprise a total of approximately 18,800 m2 divided into around 3,700 m2 for offices and 15,140 m2 for the warehouse company BOXIT. The complex is going to consist of 3-7 floors with a maximum building height of 30 m. The areas towards Østre Alle and Sønderbro are considered green areas with scattered trees and bushes.
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2 There is no further determination in the local plan for the western part (dark blue/purple). The area will be adjusted for residential uses and businesses and will also include a grocery store (Aalborg Kommune, 2015). Also for this area, the local plan provides a draft that shows the composition of the building volumes on the site. Again, these ideas are visualized in the master plan. The planned construction will comprise a total of approximately 16,800 m2 divided into around 6,400 m2 for offices and 10,400 m2 for housing.
Ka
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Eternitten
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Håndværkerkvarteret
Håndværkerkvarteret
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Håndværkerkvarteret
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Godsbanen
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SITE ANALYSIS
Lyø
The focus of the municipality is now directed towards the part of Håndværkerkvartert which is located north of Østre Allé. The types of companies in the area have changed in recent years. While previously the area was dominated by smaller industries and production companies, today the area consists mostly of workshops and service stations for cars, except for Unicon which still has a large production site in the area.
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Ågade
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Sønderbro
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Håndværkervej
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Ka
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Eternitten
1:4000
Alle
h So
Østre Alle
Østre Alle
ej rgiv ne Sy
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Blytæ
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Vis ion sve j
H
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Vegetation Vegetation is a very important component of the ecosystem because it plays a big role in many biogeochemical cycles, like those of water, carbon and nitrogen. Furthermore, it releases oxygen, absorbs carbon and provides direct and indirect socioeconomic products and services for humans. It is also a necessary part of a human’s life and beneficial for the soul (CNVC, 2013).
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SITE ANALYSIS
Lyø
Even though there is no vegetation directly on the project site, there are tree-avenues along Hjulmagervej and the stream Østerå. They create a friendly and natural component amidst the industrial area. This is why their value to the site should be assessed and they should be protected during construction. There is also a new green belt being realized at the moment. It starts from Godsbanen, continues through Karolinelund to the fjord and gives the opportunity for various uses, such as sports, recreations or spiritual activities. Green areas can also be found in the residential areas of Øgadekvartet. The high and wide trees between the housing blocks increase the quality of life and make it more pleasant to live there. Another area that is worth mentioning is Østerådalen in the southeast. With its untouched nature, it has a high potential for recreational functions.
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onnesensgade
rups Kjelle
g Hammerskjølds Gade
gade
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Ågade
Fynsgade Samsøgade
Bormholmsgade
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Fynsgade
Fynsgade
Jyllandsgade
Jyllandsgade
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Karolinelund
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Færøgade
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Sjæll
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Lyø
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Gørtlervej
500 m 6 min Bj ø rnø
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250 m 3 min
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r Ka
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Eternitten
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Alle
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Østre Alle
Østre Alle
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Blytæ
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Transport The building site is situated between the streets Hjulmagervej to the North, Sønderbro to the East, Bødkervej to the West and Gørtlevej to the South.
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SITE ANALYSIS
Lyø
It has an easy access to public transport systems, such as busses and trains. You can reach the main bus terminal and train station within 12 minutes. Furthermore, the nearest bus stop is only 50 metres from our site and is operated by bus lines 13 and 15, offering a good connection with both Aalborg city centre and Aalborg East, where for example the AAU campus is located (Nordjyllands Trafikselskab, 2017). When speaking about public transport also the upcoming route of +BUS at Jyllandsgade should be mentioned (Aalborg Kommune, 2017). The Aalborg city center is within walking distance and there are good paths connected to the open country. Also several green areas like Åparken, Karolinelund and the creek can be reached within a few minutes. The nearest bike path is along Sønderbro which gives a perfect opportunity to get to every destination in the city by bike.
Primary road
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Secondary road
Tertiary road
Bus stop
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Håndværkervej
Østre Alle
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Kærvang
Bødkervej
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Serial vision Serial vision is a method invented by Gordon Cullen that helps to determine different moods, contrasts and spatialities of a site (Cullen, 2012). For this project it has been used to analyze the most frequent arrival routes from the city to the site. There are many different types of roads and paths for vehicles, bikes and pedestrians that lead to and from the project area.
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Starting at Sønderbro the route segues into Hjulmagervej. The road is relatively wide with parking spaces along the sides and sidewalks which are protected by 12-15m high old trees. It is also quite straight which allows a good overview in both directions. The traffic consists of many industrial trucks and other company vehicles. At the intersection of Hjulmagervej and Bødkervej the site ends.
When coming from Østre Allé, one arrives on Bødkervej which is, in general, more characterized by industrial buildings than Hjulmagervej. This is due to the lack of vegetation and the large open paved areas. Towards the end of the road the green wedge opens on both sides. Along Bødkervej mainly smaller companies and industrial facilities are settled.
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Parallel to Gørtlervej runs Østerå which defines the southern end of the site. There are public paths on both sides of the creek all the way down to Sønderbro with numerous bridges that connect the sides and allows to cross the stream at several points. The tall old trees along the banks create a spacious feeling which makes this area very attractive to walk through.
Sønderbro is a two-lane highway which heads towards the center of Aalborg and is mostly used by bicycles and motor traffic. Sønderbro school and 5-storey residential blocks are located on the right side of the road. The left side is determined by a huge fenced area that extends to the gas station Circle-K that is located next to the project site.
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The route starts at the intersection of Bødkervej and Hjulmagervej and has the same course as vision ”1”, but runs in the opposite direction. On the corner of the building site, a large warehouse can be seen. At the end, the road opens up towards Sønderbro School and the gas station Circle-K.
Between Bornholmsgade and Sønderbro one can find the street Sjællandsgade. The route goes by numerous residential blocks and Sønderbro School and is characterized by different speed reduction actions due to the high number of children. From the traffic lights at the end of the road, the gas station Circle-K with the project site on its left can be seen.
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SITE ANALYSIS
Senses - nature side South of the site a small oasis lies amidst the busy area. Core of it is the stream Østerå that stretches from Sønderbro to Østerådalen. Here the senses are stimulated in various ways according to the season. The green belt embraces various surfaces, materials and colors that together with the protective old trees create a recreational area that is worth preserving and can be enjoyed in various different ways.
Senses - city side Along Hjulmagervej, on the other side of the site, one experiences a complete contrary feeling than in the green area to the South. The raw, hard materials of different walls and surfaces create an industrial atmosphere. Also on this side, high old trees frame the street and create a protective shell.
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Sun The illustration shows the sun path and the angle of the sun for Aalborg during the year. At summer solstice, June 21st, the sun rises at 4:45 am and sets at 10:19 pm and has the highest angle. The middle line in the diagram shows the sun path when it is equinox which happens twice a year on 21st of March and 21st of September. The winter solstice is on the 21st of December which is the day with the fewest hours of sun during the year (Gaisma, 2017). The sun angle should be put into consideration when designing the building, especially when implementing passive solar shading strategies.
Ill. 18
Precipitation The illustration shows the precipitation for Aalborg in 2016. It gives a general idea of how many millimeters rain or snow there is in the single months. One can see, that the biggest amount of precipitation is during summer and fall (Miljøgis, 2017). The water could be used to transform the area during rainy periods. This could be done as alternative local rainwater handling which would remove some of the pressure on the sewer system and create a more dynamic and changing environment. Additionally, different active strategies could also be considered to store the rainwater and use it for example for toilet flushing or cleaning purposes.
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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Ill. 19
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Wind Illustration _ shows from where the wind affects Aalborg and how strong it is in a certain direction. One can see, that most of the time the wind is coming from the west and southwest (Dmi, 1999). It is important to understand the wind and analyze its impact on the specific site, to be able to consider it in the design. Especially outside areas and balconies, which are highly frequented by the residents should be sheltered from the wind. The wind speed is also important to calculate the air change rate for natural ventilation.
Temperatures The climate in Aalborg is very typical for Denmark with mild winters and cool summers. Temperatures range between -5 and +5°C in the three coldest months January, February and March. In the summer months June, July and August, temperatures do not rise higher than 20°C (Dmi, 2017). Consequently also the periods in between, fall and spring, are quite cold which leads to a long heating period between October and May.
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Ill. 21
Ill. 22
Noise The noise pollution in the project site is in general between 55 and 60 dB which equals the sound level of a normal conversation. Close to the gas station, the volume rises up to the level of a lawn mower which is around 70 to 75 dB. The busy roads in the area have the highest noise pollution with more than 75 dB (DCE, 2017).
Air pollution Despite the high number of industrial facilities and busy roads in the area, the average pollution level is quite low considering the critical value which can cause health damages is 40 ug/m³ (DCE, 2017).. The noise and NO2 pollution should be considered when designing outdoor areas, residential buildings or sensitive functions. For both pollution types, the roads have the highest values and consequently the highest impact.
55-60 dB
10-15 NO2 µg/m3
30
60-65 dB
65-70 dB
Sustainable Architecture
70-75 dB
< 75 dB
15-20 NO2 µg/m3
20-25 NO2 µg/m3
Residential
Residential
Hjulmagervej
Project site
Gørtlervej
New development
Østre Alle
25m 20m 15m Bonnesensgade
e
Færøgade
s ld
G
d søga Sam
gade Sejrø
ade
lmsgade Bormho
en ark
Sjæ
nd lla
a sg
de
de
erga Amag
Å-p
gade Morsø
n
ade eløg
B-B
e
kjø
Hess
ers
Bogøg
m m Ha
sgade
g Da
m Salthol
e an
en
Samsøgade
Bormholmsgade
erbro Sønd
sb od G
rk pa
Ill. 23
ade
e
vej angs Solv
ne ba rn Je
5m
Fynsgade
Færøg
ad
10m
Fynsgade
Fynsgade
Jyllandsgade
Jyllandsgade
Jyllandsgade
Jyllandsgade
ad rupsg Kjelle
Dag Hammerskjølds Gade
Niels Ebbesen Gade
Ågade
Section B-B
Karolinelund
ersk jøld sG ade Ham m Dag
A-A
j erve Lyø e
rtøg ade
Bjø
e
e gad rnø
Østre
Alle
o h So
Østre Alle
olm sh ård ng
Østre Alle
j
sve
ive erg Syn
vej
øgad
Sønderbr
kker
j
Håndværkervej
Blytæ
Bødkervej
Øst re Al le
gad
Hjo
Gørtlervej
Drej
lle
e sgad holm Born
Øst re A
o
j
erbr
erve
Sønd
lmag
Kærvang
mag Hjul
ade
Hjulmagervej
Hjulmagervej
Bødkervej
Hju
Hjulmagervej
A-A
ade
SITE ANALYSIS
ndsg Sjælla
ndsg Sjælla
B-B Ka
Ga d oss rF nd e xa Ale
Vis ion sv
ej
Project site
Sønderbro
Bødkervej
Håndværkervej
Small industry
Ill. 24
j
e
Eternitten
ve ers rn
Sønderbro
Sønderbro
25m 20m 15m 10m 5m
Section A-A
Ill. 25
Sustainable Architecture
31
Bonnesensgade
g rups Kjelle
g Hammerskjølds Gade
ade
Niels Ebbesen Gad e
Ågade
Fynsgade
Fynsgade
Jyllandsgade
Jyllandsgade
Jyllandsgade
Fynsgade Samsøgade
Bormholmsgade
Jyllandsgade
Karolinelund
e Sønd rbro
Færøgade
s Sam
e
d øga
a eløg
e
s Hes de
gade Sejrø
ad e
gade
æ Sj
e
Ama ad gerg
Å-p
en ark
Morsø
lmsgad Bormho
n
Bogøg
m m Ha
ad
ade
g Da
G
msg Salthol
e an
r pa
ds
j
sb od G
e an nb
l jø sk er
ve angs Solv
r Je
n ke
gade Færø
nd ll a
a sg
de
e
Sjæll
e lds G ad ersk jø Dag Ham m
rbro
Lyø
de ga
Hjo
rtøg
ade
Gørtlervej
500 m 6 min Bj ø rnø
a de j øg Dre
Alle
250 m 3 min
de sga holm Born
j
e Sønd
rve ge lma
ade
ej
Bødkervej
e gad
e Østr
s ård ng lm ho
sv e j
N
Ill. 26
er rn
e sv
j
os sG ad rF
nd e xa Al e
Sønderbro
Sustainable Architecture
Håndværkervej
32
Ka
e
Eternitten
1:4000
Alle
h So
Østre Alle
Østre Alle
ej rgiv ne Sy
kkerv ej
Håndværkervej
Blytæ
Bødkervej
Alle
Sønderbr o
Østr e
Vis ion sve j
Hju
Kærvang
Hjulmagervej
Østr e
rv age
g ands
ade
Hjulmagervej
Hjulmagervej
Hjulm
Sjæll
g ands
s Sam d øga
e
a sg
de
de ga
Institutions
Ka
er rn
e sv
Shops
Offices
Residential
SITE ANALYSIS
Lyø
Functions The site is located in an industrial area which has many different facilities such as storages, workshops and a concrete factory. On the northwest, the area around the train and bus station, which is called Godsbanen, is currently experiencing a revitalization with many new residential buildings under construction (Aalborg Kommune, 2015). A large part is dedicated to student housing. Øgadekvarteret, in the northeast, consists of residential buildings and different shopping opportunities from the 1930’s (Aalborg bibliotekerne, 2017). Furthermore, there are is also a school and a church in this part of the city. Eternitten is primarily dominated by residential buildings, but also has many other functions such as playgrounds, offices supermarkets and other shops.
Industrial
j
Sustainable Architecture
33
1
1 4
2 2
3
Ka
er rn
e sv
10
j
2 2
xa
4
nd e
rF
os sG ad
e
4
4
1
1
2
Al e
1
2 3
Ill. 27
1
de ga
1
Eternitten Sønderbro
2
Håndværkervej
1
3 3
1
e lds G ad ersk jø Dag Ham m
1
Sustainable Architecture
4
4
1
1
1
1
1
2
j
1
N
4
1
1
2
Lyø
1
sv e
1
1
1
lm ho
2
1-2
3 s ård ng
kkerv ej
Alle
h So
Blytæ
5
1
Østre Alle
Østre Alle
5
e Østr
ej rgiv ne Sy
1
Håndværkervej
1
e
2
d øga
6
2
ade
4-5
de
5
5
rtøg
1
a sg
1
Hjo
1
5
3-7
2-5
de
5 Bødkervej
2
2
1
a eløg
1
Alle
s Hes
1
a de j øg Dre
1
gade Sejrø
4
1
nd ll a
e gad
1
1
1
5
Sønderbr o
Østr e
2
1
1
5
5
rnø
2
æ Sj
ade
Bj ø
1
5
a de
1
g ands
ade ndsg jælla
3
Gørtlervej
2
Bogøg
4
5
5
5
5
Sjæll
S
5
de sga holm Born
1
gade Morsø
1
5
e
1
1
1
5
5
5
rbro
1
5
5
5
5
Hjulmagervej
ej
Alle
34
4
4
e Sønd
rv age
1
1:4000
1 1
1
1
5
5
5
4
1 Kærvang
2
5
5 5
Bødkervej
Hjulm
Østr e
j
4
Hjulmagervej
1 rve ge lma
1
1
5
5
1
1 Hjulmagervej
6-11
1
1
4 1
2 1
1
1
3
1
1
1
5
e
en ark
3-6
5-7
Hju
1 Å-p
1
5
ad gerg
5
3-5
4-7
6-10
3
4-6
1
5
5
5
5
5
5
lmsgad Bormho
n ne ba
jø sk er
5
ade
g Da
m m Ha
1
5
Færøgade gade Færø
4
4
2
2 5
msg Salthol
5
en
1
5
5
5
5
Ama
s od G
Je
rk pa
e
j
7
ne ba rn
ad
ve angs Solv
1-4
s ld
G
4
1
3
5
Fynsgade
5
s Sam
4-6
1
5
5
5 rbro
1
2
1
e Sønd
4-8
5
2
2
2
1
2
6
1
Fynsgade
Fynsgade
Jyllandsgade
Vis ion sve j
3-7
4-7
2
1
1
2
Samsøgade
4
1
Bormholmsgade
4
6
5
Jyllandsgade
Jyllandsgade
Jyllandsgade
5
1
Karolinelund
Bonnesensgade
3
4
6
2
ade
5
1
5
g rups Kjelle
5
5
g Hammerskjølds Gade
Ågade
6
4
4
5
Niels Ebbesen Gad e
3
5
5
s Sam
1
d øga
e
5
a sg
de
5
2
5
Lyø
de ga
5
1
SITE ANALYSIS
Building heights Due to the location of the project site on the border of several quarters, which are determined by very different functions, also the heights of the buildings differs remarkable. The industrial facilities in the north and west have not more than two storeys and are only about five meters high. An exception are the four-storeys-residential blocks along Sønderbro which are double the height.
5
Housing complexes can also be found in the east, where they have mostly five storeys and are around 17 meters high. In the area between the project site and Østre Allé a new building complex with a very diverse height development is planned. While the blocks will start with two and three storeys in the north, they will rise up to an average of five storeys in the southern parts. Some parts will even be divided into six or seven levels. Also in Godsbanen in the northwest a big variation of heights can be found. Furthermore, the development area is determined by the highest buildings in the area with up to ten storeys and over 30 meters height (Aalborg Kommune, 2017).
1
2
1
3
1 Ka
er rn
e sv
2
0-5 m
5-10 m
10-15 m
15-20 m
< 20 m
j
2 2
Sustainable Architecture
35
N
1:4000
Ill. 28
36
Sustainable Architecture
SITE ANALYSIS
Morphology The site is primarily dominated by low warehouses in many different shapes and large chimneys is defining the skyline. South of Hjulmagervej the building shapes are more narrow and straight which allows views through the sites. At the sites in the north, the form of the buildings are more complex and modified to the specific functions. On the corner of Hjulmagervej and Sønderbro one can find a big urban block that has been shaped according to the adjoining roads. In Øgadekvarteret long blocks have been positioned parallel to each other. Consequently there are no courtyards as they can be seen in the closed structures in the inner city. The area is generally dominated by pitched roofs with different angles. Eternitten, on the contrary, is determined by very high buildings with flat roofs that results in a very different architectural expression. This can be noticed especially at the intersection of the streets Sønderbro and Østre Alle.
Sustainable Architecture
37
Demographic Looking at the demographic development of the area, one can see, that almost 60 % of the current residents are young people in their twenties. More than half of the remaining people are adults between thirty and sixty, which means that the percentage of children and elderly people is quite low in this area. Also, the figures about family types and household sizes emphasize this development: The majority of the households consist of not more than two people and children are living in only 10 % of the apartments (Aalborg Kommune, 2017).
SITE ANALYSIS
Age diversity
16 %
18 %
4%
In order to achieve a better social diversity, the new residential complex should especially attract families with children of different ages and elderly people, besides the already existing clientele of young people. This mixture gives the opportunity to more communication and interaction between the different generations. Furthermore, people could profit from one another and help each other in everyday-life tasks.
Persons in the household
4%
6%
58 %
2%
5%
34 %
38
10-19 yr 20-29 yr 30-49 yr 50+ yr
Sustainable Architecture
2% 1%
58 %
Ill. 29
0-9 yr
Number of kids in the household
92 %
Ill. 30
1 pers
2 pers
3 pers
4+ pers
Ill. 31
No kids
1 kid
2 kids
3+ kids
Building typography In order to decrease the energy use for the building and transportation and to diminish excessive land use, a high population density is required. For this project the ratio between the net floor areas and the building site should be between 100 % and 200 % (Lauring, 2017). To get an idea of the density of different building typologies, several scenarios on the building site have been tested. This survey shows that detached houses, which is the most popular housing type among families with children in Denmark, is far from meeting the required building percent. This means that either a vertical or a horizontal densification is
needed. While the first strategy enables bigger common open spaces because the built area is very low, the second one offers the possibility of accessing the apartment at grade and decreases problems related to shadows. One of the main differences between these types is also the opportunity of including other uses into the housing area. In a low, dense structure, the lower floors and the open areas are mostly used privately, whereas in tall buildings the ground level can be easily used for shops, cafĂŠs etc. with a semi-private or public park in front of it.
SITE ANALYSIS
Detached house - footprint. 13 %
1 storeys
-
building percent:
13 %
2 storeys
-
building percent:
25 %
3 storeys
-
building percent:
37 % Ill. 32
Facts: - Open-low - Usually living space for one family - Accesible at grade - In most cases ownership
Advantages: - Large private oudoor spaces - High flexibility in use
Disadvantages: - Big energy footprint - High land use
Sustainable Architecture
39
Urban villa - footprint. 23 %
3 storeys
-
building percent:
80 %
4 storeys
-
building percent:
91 %
5 storeys
-
building percent: 114 % Ill. 33
Facts: - Open-low to open-tall - Stand alone building on proportionally small proberty - Apartments are distributed among several levels
Advantages: - Low land ues - Different layouts possible
Disadvantages: - Hardly any private open spaces - Limited indivuality - Some apart ments are orientated to the North
SITE ANALYSIS
High-rise building - footprint. 14 %
7 storeys
-
building percent: 100 %
Facts: - Open-tall - Vertical orientated buildings with more than 23 m height - Nearly quardratic
9 storeys
-
building percent: 129 %
Advantages: - Good daylight and views - Usually a lot of infrastructure within the building
11 storeys
-
building percent: 157 %
Ill. 34 Disadvantages: - Hardly any private open spaces - High wind load - Negative impacts due to high number of resisdents
Terraced house - footprint. 48/41 %
2 storeys
-
building percent: 82 %
Facts: - Dense-low - Linear addition of at least three buildings - Each building is habbited by one family
40
Sustainable Architecture
3 storeys
-
building percent: 123 %
Advantages: - Quality similar to detached houses with private open space - Lower land use
3 storeys
-
building percent: 144 %
Ill. 35 Disadvantages: - Usually narrow floor plans - bathroom without windows - Difficult vertical development
Parallel block- footprint. 40/42 %
3 storeys
-
building percent:
100 %
4 storeys
-
building percent:
129 %
5 storeys
-
building percent: 200 % Ill. 36
Facts: - Dense-tall - Parallel arrangement of elongated blocks - Developed via footpaths between the blocks
Advantages: - Economical - Allows cross-ven la on
Disadvantages: - Risk of monotony - Low poten al for mixed use - Too small distances between blocks can cause views into the single apartments
Urban block - footprint. 57 %
-
building percent: 134 %
3 storeys
-
building percent: 171 %
4 storeys
-
building percent: 228 % Ill. 37
Facts: - Dense-low to dense-tall - Semi-private courtyard can be used and appropriated by the residents = meetng place
Advantages: - Big open and green space - Aparmtents facing to street and quiet inner yard - mixed use possible (ground oor level)
Disadvantages: - Diffcult layouts in the corners
Open block - footprint. 48/41 %
2 storeys
-
building percent: 84 %
3 storeys
-
building percent: 126 %
4 storeys
-
building percent: 168 % Ill. 38
Facts: - dense-low to dense-tall - differenc to urban block: structure interrupted on one side
Advantages: - Big open and green space - aparmtents facing to street and quiet inner yard - more exibility than urban block
Disadvantages: - Diffcult layouts in the corners
Sustainable Architecture
41
SITE ANALYSIS
2 storeys
USER ANALYSIS
Ill. 39
42
Sustainable Architecture
Suburban and urban qualities Most Danes prefer to live in a detached house outside or in the outskirts of bigger cities. Currently, more than half of the Danish population is living in their private house. (Danmarks Statistik, 2017) However, this kind of living also causes numerous challenges related to sustainability. Common problems are a high energy consumption for heating and transportation, challenges in building technology and social segregation. (Melgaard, 2014).
Nevertheless, there are also many advantages of living in a more urban context. Short distances to supermarkets, schools and offices are probably one of the biggest. Many of these everyday life routes can be covered by foot or public transport systems, which makes a private car less necessary. Furthermore, cities often offer a wide range of cultural attractions and various sports activities. There are also some social advantages of a higher residential density. Having more neighbours also means more possibilities for social interactions and making new friends.
People often describe their home as a place of self-expression, happiness, belonging and permanence, with a preference to return (Sixsmith, 1968). The most important thing is, however, the internal social experience. This shows that the relationship with family members or pets is the primary reason for a psychological association with home (Smith, 1994). It is very important to determinate the distinction between the psychological and the architectural association of home. According to the study from Deakin University, architecture itself cannot create a sense of home. But, at the same time, a dwelling is not considered as home, if the design does not fit with a client’s life. This can be done by implementing individualised architectural methods with a deeper understanding of a client, but also by using a human scale (Stoneham, Smith, 2015).
In order to attract people to the cities, it is important to offer them besides the urban qualities also some of the suburban ones. This can be achieved by, for example, providing generous private open spaces like balconies or terraces, big green spaces nearby and a safe atmosphere.
Sustainable Architecture
43
USER ANALYSIS
There are no doubts about the qualities of living in the suburbs. Usually, people live in their own house with a big garden and a high level of privacy. There is only a small chance to be disturbed by loud neighbours or busy streets. In general, suburbs are quieter, have a better environment and a better air quality.
Creating a sense of home Designing a residential building is the most personal architecture that can be done. One’s home has a very specific effect on a person’s psychological behaviour and emotions. Therefore, it is necessary to balance all aspects of a building like the technical solutions, legislation and economical budget also with a deep understanding of the user’s needs and wishes. Those can be very individual, this is why it is essential that the architect takes the time to go through this process in every single project.
User analysis Within an urban environment, there are various user types that all have different spatial needs. During a human’s lifetime, one usually represents several of these types, depending on the current stage of life. In the following text the most common household compositions have been investigated:
USER ANALYSIS
80 m²
80 m² car parking car parking
sport facilities sport facilities
60 m² bicycle workshop bicycle workshop
private garden
private garden
In many cases, young people make their first housing experiences when they finish school and start with a further education. Because ofschool financial playground school playground reasons, it is very common to live in a shared apartment with other students for the first few years. After some time, people might want to have parks their own home and move into a small single apartment.parks As they find a partner and have children with him/her, the living conditions change WITH FAMILY CHILDREN again and more space is needed due to the higher numberFAMILY of people inWITH CHILDREN one dwelling. When their children grow up and move out, many parents still want to keep a larger apartment to provide space for them in case of a visit. However, they might change the layout of their home and adjust it to their new circumstances. A couple of years later, a lot of space is often not so important anymore - on the contrary, it can be a burden as it is often connected with a lot of housework - but accessibility may belivingto andmove cooking living and room cooking 28 m² room 28 m² come an important issue. This is why elderly people tend again.
take aways take aways cafès
cafès library
60 m² library
STUDENTS STUDENTS
social activities social activities 35 m²
common 35 m² areas
common areas
SINGLE SINGLE
public transport
40 m² public transport
40 m² sport facilities
COUPLE COUPLE
kitchen 12 m² kitchen 12 m²
storage room storage 1,8 m²room 1,8 m²
All the household types described have different space requirements. This can be because of the different number of people that are living together, but also because of their particular lifestyles. While for people in their twenties living, sleeping and working is usually taking place in the same room, the activities are more separated in subsequent dwellings. bathroom 4 bathroom m² 4 m² There the bedroom is in most cases only used for sleeping, abedroom 11bedroom m² 11 m² toilet 1,6 m²therefore toilet 1,6 m² living room is needed, where people can stay during the day. With the different stages of life not only the needs for living space change, but also those connected to a dwelling. These can be for example the wish for common areas to be able to socialize or for activities, for which there is too little space in their own apartment. While for some nursery 9 m²nursery 9 m² nursery 9 m²nursery 9 m² people public parks and green areas nearby are enough, others may prefer to have a private garden. Also the needs for infrastructures like public transport systems or facilities like schools and supermarkets differ for each of the user groups.
44
Sustainable Architecture
living and cooking living and cooking room 18 m² room 18 m² student room 9 m² room student 9 m² 4 bathroom bathroom m² 4 m² toilet 1,6 m²toilet 1,6 m²
living, cooking living, andcooking and sleeping room sleeping 28 m² room 28 m²
bathroom 5 bathroom m² 5 m²
bathroom 4 bath m² toilet bedroom 11bedroom m² 11 m² 1,6 m²toile
room 9 m² room 9 m² student student room 9 m² student student room 9 m²
sport sport facilities facilities
ctivities
take aways aways take common areas
m²
bicycle bicycle workshop workshop public cafès transport cafès
60 m² m² 60 40 m² library library
social social activities activities sport facilities
35 m² m² 35
common common 80 m² grocery shops areas areas
parks
STUDENTS
COUPLE
60 m² green areas areas green bicycle workshop public transport take aways 40 m² sport sport facilities facilities accessibility cafès grocery shops grocery shops library medical care80 80 m² m²
40 m² m² 40 private publicflexibility public transport garden transport
car parking 80 m²
school
SINGLE
common sport facilities areas
green areas
35 m²
common accessibility accessibility areas
40 40 m² m²
public public transport transport 40 m² public medical care medical care transport
sport facilities
water water
water
CHILDREN GROWNWITH UP CHILDREN SINGLEFAMILY WITH FAMILY COUPLE
WITH GROWN UP CHILDREN STUDENTS ELDERLY FAMILY COUPLE
SINGLE
COUPLE
living living and and cooking cooking room room 18 18 m² m²
living and cooking room 18 m²
USER ANALYSIS
ELDERLY COUPLE
kitchen 12 m² androom cooking room 28 m² living and living cooking 28 m² storage room 1,8 m² storage room 1,8 m²
living, living, cooking cooking and and sleeping sleeping room room 28 28 m² m²
bathroom bathroom 44 m² m² toilet toilet 1,6 1,6 m² m²
bathroom bathroom 4 m² 4 m² toilet 1,6 m² toilet 1,6 m²
m² m²
oom 5 m² bedroom 11 m²
living and and cooking cooking room room 28 28 m² m² living storage room room 1,8 1,8 m² m² storage
living living and and cooking cooking room room 18 18 m² m²
living and cooking room 18 m² student student room room 99 m² m²
flexibility flexibility
playground
kitchen kitchen 12 12 m² m²
cooking and ing room 28 m²
common common areas areas
social activities
bathroom 4 m² toilet 1,6 m²
living and cooking room 18 m² student room 9 m²
bathroom bathroom 44 m² m² toilet toilet 1,6 1,6 m² m²
bedroom 11 m² bedroom 11 m²
bathroom bathroom 55 m² m² bedroom bedroom 11 11 m² m²
bathroom bathroom 44 m² m² toilet toilet 1,6 1,6 m² m² bedroom 11 m²
living, cooking and sleeping room 28 m²
bathroom 4 m² toilet 1,6 m² bedroom bedroom 11 11 m² m²
bathroom 5 m² bathroom 4 m²
bedroom bedroom 11 11 m² m²
bathroom bathroom 44 m² m²11 m² bedroom
student room 9 m² student room 9 m²
student room room 99 m² m² student student room room 99 m² m² student nursery home office 9 m² 9 m²
extra roomnursery 9 m² 9 m²
home home office office 99 m² m²
extra extra room room 99 m² m²
Ill. 40
Sustainable Architecture
45
bathroom 4 m² toilet 1,6 m²
g
USER ANALYSIS
6
8
10
Children
school
Young
education
12
activity
work
14
16
18
20
22
24
play
shop
activity
Behavior Due to this projectâ&#x20AC;&#x2122;s aim to create a rich diversity of user groups, different daily routines and personalities have been investigated. Adults shop activity work Dependent on their wish for privacy or willingness to socialize, there should be different levels of exposure within the complex. This way people can have the possibility to follow the activities outside, but can Eldery decide if they want to be part of it and how muchshop they want to actively interact with other people. To get an idea of which user groups can be met in the project area during the different times of a day, a schedule has been developed.
It describes the number of hours people spend at the complex and how they spend their time in the meantime. The information is based on own experiences and has been generalized in order to be able to process it. Looking at the schedules of the different user groups, one can see that especially in the afternoon, when the majority of people are at work or at university, children and elderly people are staying at the site. As a consequence, the area is constantly busy, which increases the security and the liveliness of the area.
Urban transition
Covered
Semi exposed
Exposed
Ill. 41
46
Sustainable Architecture
6
8
10
school
Young
education
Adults
activity
16
18
20
22
24
play
work
shop
shop
work
Eldery
14
USER ANALYSIS
Children
12
activity
activity
shop
Urban transition Ill. 42
Sustainable Architecture
47
Building program Apartments
People in each
Size (m2)
Rooms
Total
Young I
2
55
2
Number of different housing types
Young II
3
60
14 % 85
3
Number of people in the different housing types
175
Elderly I
2
Elderly II
2
Family I
4
Family II
5
Apartments room
Room heights (m)
Daylight factor (%)
Artificial light (lux)
CO2 (ppm) Above outside
Living room
2.70
2
50-200
800
Kitchen
2.70
Percent of different housing types
70
Bedroom
2.70
Bathroom
2.70
13 %
12 %
19 %
200-500
2
200
-
200
17 %
17 %
1923 %%
5
25 %
2
14 %
26 %
800
Young II Elderly II
13 %
800 12 %
Young I 23Elderly % I
25 % 14 %
12 %
Elderly I 26 %Family I
14 %
Elderly II Family II
700
8 % 17 %
13 %
13 % 26 %
26 %
12 % Percent ofdifferent different housing types Number housing types Percent of peopleof in the different housing types 17 %
Percent of different housing types
16
14 %
19 %
Percent of different housing types 14 12 % % Percent of people in the 17 % 25 %
% Percent of people in the different housing types 23 %
25 %
housing types 23 %
19 %
Ill. 43
Number of different housing types
19 % 16
17 %
12
Young I
12%% 13
15
9
10
17 %
00
7817 % 8 %11
of the different housing types Number ofNumber people in different housing types
Young II
1650 1240 35 10 14 30 825
12% % 13 %
40
14 % Elderly I 26 % 17 %
30 50
%
10 0
Ill. 45
Elderly I 26 %
45 40 35 30
Elderly II 12 %
Young II
20-26 Co o 12
18-22 C
14 % %
Young II Elderly II Elderly I Family I Elderly II Family II
20-26 Co
8%
12 %
Family I Family II
Young I Young II Elderly I
Young I Elderly II 30 27 20 14 44 40 Family I
5
Young II
Number 13 %of people in the different housing types 50
17
45 20 40 15 35 10 30 % 5 25 0 20
Young15I
Young I
14 %
20-26 Co
25 types different housing
Family II9 20 15 27 10 814% 7 44 11 408 30
Young II
Ill. 44
14 %
35 Number of people in the different housing types
8%
Young II Elderly I
Family II 30 27 20 14 44 40 14 %
Elderly I
Elderly II
Elderly II 12 %
Family I
Family I
Family II
25 Family I Family II Elderly II 20 8% 12 % 6 14 % 15 12 % % 15 Number of people in the different housing types Number of different housing types 13 4 4 48 Sustainable Architecture 10 Family I Family II Elderly II 10 Elderly 26 I % 50 16 17 % 2 8% 2 5 12 % 5 45 types 0 0 housing 14 0 different housing Number of people in the Number of different types 0 1530 927 1020 714 1144 840 II 30 27 20 15 9 10 7 11 8 40 14 44 40 Family Family I Elderly II 12 50 16 8% 12 % 35 45types 14 Number of people10in the different housing Number of different housing types 30 8
26 %17 %
45
17 % Young I 12 23 % Number of people in the differenthousing housingtypes types Number of different 35
Young I
1445
Young II
Young I
10
14 %
23 %
17 %
14
17 %
19 %
Temperature
50
40
10 10 30 5016 16 Young II Percent of people in the Percent of different housing types 8 25 8 4514 14 20 6 6 40 19 12 % 1512 Elderly I 35 4 4 the different housing types 14 % Percent of people in10 Percent of different housing types 14 10 14 % 30102 2 23 % 8 8 25255% Elderly II 0 0 0 20 6 of people in the types 14 % Percent 6 15 9 10 different 7 11 housing 8 3015 279 201014 7 441140 8 13 % 17 % 15 13 % 4 4 23 % Family I 25 % 10 26 % 26 % 12 % 12 % 2 different housing 2types12 % 5 0
Family I
Young I Elderly I
17 %
NumberFamily of people II in the different housing types 8%
50 16 45 14
17 % 23 % 25 % Number of different housing types
12
25 %
of different housing types
14 %
14
12 % 12 % Number of different different housing types Percentofofpeople people the differenthousing housingtypes types Number ininthe 8 %17 %
Young I Young II
Young II
4
150
Young I 17 % 23 % Percent of people in the different housing types
2
14 % 120
19 %
14 %
17 % 2 23 % 25 % Percent of people in the differenthousing housingtypes types Percent of different
60 25 % Percent of different housing types
19 %
Percent of people in the different housing types
Percent of different different housing housing types types Percent of people in the
Ill. 46
Elderly I 26 % 17 % 620
Additional function The main purpose of the building complex is going to be housing, nevertheless up to twenty percent can be used for other functions. In this early design phase, some initial ideas for non-residential functions have been found. They concern not only indoor activities, but also the open areas around the forthcoming building complex.
-
GAS STATION CIRCLE-K (public) has to stay (important connecting route, only gas station nearby) much frequented place -> contributes to security integrated in building design potential for turning it into a electric filling station COWORKING (semi-private or public) place to work for self-employed and students start-up offices connected with a library only for residents/members or open for everyone CAFĂ&#x2030; (public) meeting point bistro with cheap food workplace for elderly or young people BICYCLE WORKSHOP (public) self-service? Encourage using bicycle PLAYGROUND FOR KIDS (semi-private or public) different ages in combination with outdoor fitness devices
The ideas are mainly based on the preceding analyses of existing functions in the area and the needs of the future residents.
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CARSHARING (semi-private) common cars for residents sustainability concept INDOOR SPORTS HALL (semi-private) cross-fit studio already on the site (partly) visible from outside COMMON ROOMS (semi-private) to rent for events meeting place display window in façade URBAN GARDENING (semi-private) local food production close to the water -> more public on the roof -> private and protected
SEMI PUBLIC
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S U STAINA BI L I T Y
The following section explains the different factors of sustainability and how it has been implemented in the project. The main focus has been towards environmental sustainability and social sustainability.
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DESIG N STRATEGIES AND PRINC IPLES
Sustainable architecture Sustainable architecture is the theory of design and construction of buildings according to environmentally friendly principles. The main focus is to reduce pollution and effective use of the resources, as well as recycling the materials or lowering the CO2 emissions. All these goals are meant to be achieved during the whole life cycle of the building. However, the problem is more complex - it also includes a good indoor climate, social diversity, biodiversity and overall user satisfaction and their interaction with architecture (Bejder, Knudstrup, Jensen, Katic, 2014). The main aim of using all these approaches is to achieve sustainable development in architecture with environmental, social and economic aspects. This is based on the so-called “triple bottom line”- idea which determines that sustainability can only be reached if those three aspects are considered and implemented equally. In this project, however, the focus has been laid on the environmental and social sustainability, while still economic factors have been kept in mind. Environmental sustainability “Sustainable and eco-friendly architecture is one of the main aims that humans for creating a better life have made as the ultimate model for all their activities. For this reason, moving towards a greener architecture is well-thought-out the main goal of the present architecture of our time.“ (Mohammadjavad, Arash, Airya, Setareh, Narjes, 2014)
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The key to achieving an environmentally sustainable building lies in its design. Firstly, passive strategies should be applied, such as the right shape and orientation of the building that determines the daylight, natural ventilation and passive solar heating and cooling, as well as an adequate building envelope to decrease transmission loss. Next, the overall energy consumption can be optimized by thought out technical solutions and last but not least, active solutions should be implemented to gain renewable energy and lower the energy demand from the grid (Bejder, Knudstrup, Jensen, Katic, 2014). Social sustainability “Development that meets the needs of the present without compromising the ability of future generations to meet their own needs” (World Commission on Environment & Development, 1987). Due to the fact that social aspects cannot be measured as scientifically as the environmental and economic ones, there are difficulties and uncertainties about its definition (Colantio, Dixon, 2011). The most common one is probably the one in the Brundtland’s report that is stated above. Seeing it more from the architectural point of view, the goal in terms of social sustainability is to create “a long-term viable setting for human interaction, communication and cultural development”, while at the same time preserving the environment so that also the needs of future generations can be fulfilled (Yiftachel, Hedgcock, 1993).
DGNB DGNB (Deutsche Gesellschaft für Nachhaltiges Bauen) is a German certification system that is based on the building’s life cycle and the materials used for buildings (DGNB, 2017). D ESIGN STRATEGIES AND PRINCIPLES
In April 2010 the Danish Green Building Council chose this scheme to be used in Denmark because of its holistic and flexible approach. DGNB DK has been adjusted to Danish standard and is now used for new urban districts, office buildings and residential buildings with more than 6 units, hospitals, education facilities and childcare institutions, as well as existing buildings. At the moment, it is still voluntary to use this system, however, it is expected to become obligatory within the next years. The DGNB scheme consists of six main criteria: Environmental Quality, Economic Quality, Sociocultural and Functional Quality, Technical Quality, Process Quality and Site Quality. The first four criteria are weighted with 22,5 % each, while Process Quality makes up only 10 % of the total score. The Site Quality is assessed separately with 100%, which means there are two separate scores given for the building and for the site. These criteria are further divided into 40 sub-criteria - two of them are knock-out criteria. When a building does not fulfill these two principles, it cannot get any of the DGNB certificates. A project is given points in each sub-criteria and when fulfilling the necessary total score, a certificate – Silver, Gold or Platinum – is granted according to the total and nominal performance index (Larsen, 2017).
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DGNB - Criteria
DESIG N STRATEGIES AND PRINC IPLES
ENV 2.1 - Life Cycle Assessment Primary Energy To reduce the overall energy demand, passive strategies are implemented in the project. Furthermore, the usage and production of renewable energy with a photovoltaic system on the roof should decrease the impact on the environment.
ENV 2.2 - Drinking Water and Waste Water Rainwater is collected from the roofs and the open areas in-between the buildings and is used for washing machines, watering and toilet flushing. As a consequence, the amount of drinking, as well as, wastewater can be reduced and the pressure on sewers decreased.
Economic Quality
Sociocultural and Functional Quality
Environmental Quality
Site Quality
Process Quality
SOC 1.1 - Thermal Comfort During summertime, strategically placed overhangs and big openings for venting prevent overheating in the apartments. In the heating season, floor heating ensures comfortable room temperatures. Additionally, a mechanical ventilation system is used to keep the air quality high without decreasing the room temperature by venting.
Technical Quality
SOC 1.2 - Indoor Air Quality A sufficient amount of windows on - in most cases - at least two facades, allow natural ventilation during the summer months. In the heating season, mechanical ventilation is used to keep the CO2 level down as well as the heat loss through natural ventilation low.
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SOC 3.3 - Layout Quality Each block offers a high variety of apartments that are suitable for different users groups, which leads to a high diversity of people within the buildings. The big, diverse open spaces between the blocks, as well as the two common rooms on the ground floor, serve as a communication area and are also characterized by their high flexibility
SOC 1.6 - Quality of Outdoor Spaces A high diversity of outdoor spaces with different levels of privacy, functions and different amounts of greenery can be found in the ”social belt”. Furthermore, green roofs on the lower buildings in the South ensure a pleasant view from the apartments in the blocks behind.
TEC 1.3 - Building Envelope Quality In order to meet the strict requirements of the Danish Building Regulations of 2020, a highly insulated building envelope with minimised thermal bridges has been pursued. A tight envelope should also prevent condensations and leakages.
SOC 1.7 - Safety and Security To guarantee a high level of security, a sufficient number of lighting is installed in the open areas close to the buildings. A clear layout of the apartments and additional functions ensures an easy orientation and a simple recognition of escape routes.
PRO 1.3 - Design Concept Setting goals for the energy consumption and designing a water plan already at the beginning of the project has been crucial in order to apply appropriate strategies in an integrated design process. This was also necessary to dimension the renewable technologies.
SOC 2.1 - Design for All By avoiding height differences and providing suitable paths in the open space between the blocks, the whole ”social belt” is easily accessible for everyone. All the areas inside the buildings are designed barrier-free, as well. Moreover, 29 % of the apartments are suitable for wheelchair users.
SITE 1.2 - Public Image and Social Condition By creating a mixed-use complex with numerous public functions like a café or a bike shop on the ground floor and open spaces that are partly open to all city residents, the attractivity of the quarter can be increased. It also changes the image and reputation of the former industrial area.
SOC 2.3 - Cyclist Facilities Adequate, covered bicycle parking can be found on the ground floor, next to the street, as well as in the basement. This ensures that the way to one’s bike is never longer than 100 m. In both cases, the rooms can be locked to prevent theft and there is also a self-repair facility in the basement.
SITE 1.3 - Transport Access Having a good access to the public transport system is crucial for the project’s concept of attracting people of all generations. The nearest bus stop is right in front of the gas station next to the site and also the main bus and train station are within a comfortable walking distance. Furthermore, several cycling paths run past the building site.
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D ESIGN STRATEGIES AND PRINCIPLES
SOC 1.4 - Visual Comfort The size and position of the windows are chosen in order to ensure sufficient daylight in all living areas. Due to the fact, that the majority of the windows is facing South or North, glare can be prevented most of the year.
DESIG N STRATEGIES AND PRINC IPLES
Zero energy building The building sector is responsible for approximately 40 % of Denmarkâ&#x20AC;&#x2122;s total energy consumption. (the Government 2009) Therefore, when setting the goal to become independent of fossil fuels within the next thirty years, the government also determined to increase the energy efficiency of buildings to decrease their energy demand. This means, that every new building should be a Nearly Zero-Energy Building by 2020. (Danish Climate Policy Plan, 2013) By setting this goal, the government also had to specify the definition of a Zero-Energy Building (ZEB) as there are different ways to describe it. In general, it can be said that it is a building with a decreased energy demand, which is partly or totally covered by renewable energy sources. As this first definition already reveals, there are several different types: While a Net ZEB, for example, produces as much energy as it consumes, a Nearly ZEB only covers a part of its demand with renewable energy. (Danish Strategic Research Centre for Zero Energy Buildings, 2014) This project can be defined as a Net ZEB according to the definitions of the Danish Strategic Research Centre for Zero Energy Buildings and follows the Danish Building Regulations 2020: The building has a greatly reduced energy demand, as it consumes less than 20 kWh/m² a year of energy for heating, domestic hot water and electricity related to the building. Due to the building regulations electricity that is user related, does not have to be included in residential buildings. Nevertheless, in this project also the appliances have been taken into account, in order
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to decrease the impact on the environment even further (BR20, 2017). The electricity demand of the building is fully balanced by renewable energy that is generated on the site, namely by a photovoltaic system on the roof. Furthermore, it is connected to the grid, which means that there is no need for energy storage and high energy losses can be prevented. In times, when the conditions are good and the building produces more energy than it needs, it feeds the surplus into the grid. However, when the conditions are less suitable, it consumes energy from the grid. To provide the blocks with hot water they are connected to the district heating grid. In this case, the decision has been made against a production on the site, as the connection to the grid is easily available and is more efficient and economic than for example the installation of heat pumps on the site (Bejder, Knudstrup, Jensen, Katic, 2014). Besides a low energy demand and the use of renewable energy sources, there are also other aspects that are crucial when designing a Zero Energy Building. One of the most important ones is a satisfactory indoor climate with pleasant temperatures, air quality, acoustics and daylight conditions, and a user-friendly design. If people donâ&#x20AC;&#x2122;t feel comfortable in a building, they will start to adjust it to their needs, which can lead to a worse building performance (Bejder, Knudstrup, Jensen, Katic, 2014). Last but not least, the architectural and visual quality of the building should also be considered. To be able to fulfil all these criteria, there is a need for an integrated design process in order to find a balance between technical solutions, visual expressions and atmospheric qualities.
Weighted supply (kWh, CO2, etc.)
Net zero balance line Net zero +
Energy supply
Net zero energy (Included active strategies) Nearly net zero energy (Included passive strategies)
Reference building (Without passive strategies) Weighted demand (kWh, CO2, etc.)
Energy efficiency measures
Ill. 48
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D ESIGN STRATEGIES AND PRINCIPLES
Passive and active strategies In order to achieve a good indoor climate and to minimize the energy use of a building, passive and active design strategies are needed. While the first one uses ambient energy sources without the need for purchased energy, the second one processes electricity to reach the goal. There are also systems that combine these two methods, the so-called hybrid systems. This means, that they use some additional energy (mainly electricity) to increase the efficiency of an ambient energy source. What all of them have in common is, that they take advantage of the buildingâ&#x20AC;&#x2122;s context and the microclimate instead of working against it.
DESIG N STRATEGIES AND PRINC IPLES
Passive stategies Passive solar heating The main goal of this strategy is to minimize heat loss and to increase the solar gains. Solar heating systems work either with absorbing surfaces that convert solar radiation into thermal energy or with a space that is heated up or with both of them. Sunspaces, for example, combine these two strategies: First, the heat is trapped in the glazed room, then it is stored in a thermal mass before it is slowly passed to the internal rooms. Passive solar cooling This strategy aims to prevent heat gains and avoid mechanical cooling. Active strageties This can be achieved by reducing the internal gains caused by people, artificial light and equipment and by restraining the heat to enter the room. Examples of this strategy are permanent or movable shading devices that shelter the interior from the sun. Envelope An airtight envelope with a low transmission loss helps to keep the temperature in the room stable. It reduces not only the heat loss through the ventilationit also prevents exteriorMechanical building elements, the heat from entering the Wind turbins Heat pump room during hot summer days. Consequently, it is an important factor for both, passive solar cooling and passive solar heating.
Natural ventilation Natural ventilation removes excess heat from the room and at the same time supplies it with fresh air. This happens due to pressure differences that are caused by a change in air temperature and moisture. Driving forces can either be the wind or the so-called thermal buoyancy force that is dependent on the height difference. Daylighting The aim of this strategy is to prevent direct, glare-causing sunlight and to promote diffuse daylight, which is suitable for general lighting. Good daylight conditions help to reduce the need for artificial lighting and consequently the energy demand. An example for a tool, that encourages it, are light shelves that pull the daylight deeper into a room and at the same time prevent glare. Orientation To optimize a buildingâ&#x20AC;&#x2122;s performance, it is important to adjust the design to its environment. One of the most important factors is the orientation as it influences the impact of the sun and the wind. This means the rightsolar position buildingcollectors can reduce overheating in harvesting summer and Photovaltaic cellsof the Thermal Rainwater encourage natural cooling, especially cross-ventilation.
Passive strageties
Natural ventilation
Orientation
Daylight
Building envelope
Passive cooling
Passive heating Ill. 49
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Solar cells Solar cells convert solar energy into electricity by absorbing sun radiation which causes a movement of electrons and as a result generates power. It is the most common renewable technology because of their longevity and their easy installation.
Solar thermal collectors Solar thermal collectors convert solar energy into heat, which is mainly used to heat up the domestic hot water. Sometimes, also the room heating is supplied by the solar heat. In both cases, the system has to be supplemented by an additional heat source, for example, heat pumps.
Wind turbines Wind turbines transform with their blades kinetic energy from the wind into mechanical energy. This strategy has a high efficiency but is not so common for on-site installations because of their size and the noise pollution they cause.
Heat pumps This strategy does not really generate heat, it rather moves it. To do so, it takes heat from a natural heat source and increases the temperature with a small amount of electricity. The heat is taken from the air (air to water, air to air) or from the ground (brine to water).
Mechanical ventilation Mechanical ventilation systems are responsible for removing the consumed air and to supply the room with fresh one. It is mainly used when there is a high air pollution or during the heating season to prevent heat loss through venting.
Active strageties
Mechanical ventilation
Wind turbins
Heat pump
Photovaltaic solar cells
Thermal collectors
Rainwater harvesting Ill. 50
Passive strageties
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D ESIGN STRATEGIES AND PRINCIPLES
Active stategies Rainwater harvesting With this strategy, rainwater can be collected from the roof areas or other receiving surfaces, in order to use it for toilet flushing, cleaning or flower watering. In this way, not only the demand for drinking water can be reduced, also the pressure on the sewer system declines.
CASE ANALYSIS
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Regen villages Typology: Residential, Detached house, Agricultural Status: On-going project A self-sustainable residential area, where each building contributes to the overall ecosystem by using the output of one system to feed another. The idea is to be self-sustainable not only regarding electricity but also food. All technologies are already available, so the next logical step is to apply it to an integrated community with high values on sociability and the aim to reconnect people with nature. Because the settlement consists of detached houses, the building density is relatively low and would most certainly only attract a specific user type, like families. Nevertheless, communities like this could solve some of the problems that emerge with urbanization Effekt (2017).
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Nicolinehus Ă&#x2026;rhus, Denmark Typology: Residential, Urban block Status: On-going project Nicolinehus is a modern urban block inspired by the old block structure from the dense city. It is a mixed-use complex which contains besides dwellings, several markets, shops and facilities for recreational use. The apartments range from 60 to 300 m² to achieve a good diversity of different user groups. Furthermore, every dwelling has a private roof terrace and access to numerous common areas. Thanks to the optimized shape of the building, good views from every single apartment have been achieved. The overall idea of the complex is to create a connection between the city center and the newly developed harbor quarter of Ă&#x2026;rhus Aart (2017).
The project is embracing environmental driven design and has implemented various passive and active strategies Lynch, P. (2017).
The Mountain Copenhagen, Denmark Typology: Terraced housing Status: Build 2009
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A terraced housing complex in Copenhagen placed on top of a huge public parking house, which makes up ⅔ of the complex. Every apartment is directly connected to a private outdoor area - only big room-high sliding doors separate the interior with the exterior. The building manages to offer both, proximity to the city center, as well as qualities of a suburban life JDS, M. (2017).
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CASE ANALYSIS
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MVRDV Nieuw Bergen Eindhoven, Netherlands Typology: Residential, High rise Status: Winning design The sustainable housing complex in Eindhoven aims to have a high building percentage while achieving good natural light conditions in the so-called “in-between green pocket parks”. Besides dwellings, it will also contain commercial facilities and a common urban farming area on top of the building.
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C O N C EP T
The following section presents the vision for the project, as well as design criteria and the concept.
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Social diversity
Activation of ground level
Rainwater harvesting
Passive strategies
Spatial diversity
Local food production
Renewable energy production
Flexibility and opportunity for personal customization
Urban integration
Waste strategy
Activation of facade
Recycled materials
Sharing community
Accessibility
Level of privacy Ill. 55
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Design criteria As a result of the analysis, different design parameters have been set for an integrated work process during the sketching phase. From numerous parameters, a hierarchy of the most crucial ones of this project has been made. Those design criteria have a great influence on the project, as they are valued the most when making design decisions.
1
Create a social diversity Easy access for everyone: Elderly in wheelchairs, parents with a baby stroller etc. Sharing community: To help each other in order to profit from each other Adaptability: Different settings for each stage of life and changing needs (single, family, elderly etc.)
2
Integrate qualities from a detached house Spatial diversity: Different areas, where people can communicate and interact Level of privacy: Also ensure privacy: private, semi-private, semi-public, public zones
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Concept The aim of the project is to bring people of all generations together: children, young people, adults and elderly. By doing so, it is very important to actually unite them within one envelope, rather than separate them in different buildings on the site. They should be able to meet in the staircase or on the way to their cars or bikes. By not splitting up the user groups, also the risk of a social hierarchy can be prevented: There are shared apartments for students and large family apartments in the bigger blocks in the North, as well as in the semi-detached houses in the front. Additionally, all apartments are facing South (and North) to guarantee everyone similar conditions regarding views and daylight. However, the single apartment types are still orientated on the needs of the certain user groups. Based on Jan Gehl`s theory, the open areas between the blocks are not the leftover spaces but have been consciously designed by the building shapes (Gehl, 2011). The result, a â&#x20AC;&#x153;social beltâ&#x20AC;?, should not only be reserved for the residents but enhance different social interactions. While the area bordering the private gardens, should offer the possibility of an easy conversation with one`s direct neighbors, the open areas between the blocks, should gather people from the all the blocks and the neighboring quarters. So, more people from the whole area can benefit from this project. In order to give the social belt a third dimension, the facades facing the area have been designed with many private open spaces in different floors. This should enable communication and interaction between the residents on various levels. While doing this, it was important to guarantee some privacy on the balconies and terraces, too.
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P RO C E S S The following section describes the design process that preceded the final design proposal for the sustainable housing complex. This section highlights and explains important elements that have been worked out in the design.
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Initial phase Based on previous analyses, in the first idea phase, different form studies have been carried out. Part of this phase was a workshop with the focus on climate, form, daylight and access to the building. A stronger focus has been set on the definition of the spaces between the buildings. The forms should create different public and private spaces and cause a natural flow around the buildings.
spaces down to the creek Ă&#x2DC;sterĂĽ, the main attraction of the place, should be created. In this process, the gas station Circle-K has been seen as a challenge due to the noise and air pollution that are caused by cars and lorries. Therefore. the building shape has been used as a barrier to reduce its influence on the site. However, the gas station also brings a lot of people and consequently life to the area during the whole day.
PROCESS
The area towards Hjulmagervej should have a more public character with different non-residential functions on the ground floor of the buildings. Whereas, towards South smaller private and semi-private
1
2
3
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5
6
7
8
9
PROCESS
4
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PROCESS
Human health : Interaction between people : Creating life : Attracting people to the site : Safe space, : Activate the groundlevel : Suburban feeling
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Urban thoughts Early on, attention has been paid to the urban qualities, including the access to the area and the meeting points between the residents and other city dwellers.
Sustainable Architecture
PROCESS
In one of the first group meetings, a brainstorming session has been carried out to gather some first ideas to the urban composition of the site. Here, the main aim was to create a diverse environment that attracts people of all ages. Important was also to define different zones, in order to not have large undefined areas that do not correspond to the human scale. There are several attractive routes that could go through the site in the future that will result in numerous public access points and situations where the public and the residents meet. This could be used as an opportunity to enhance the interaction between the people. The following pages show some of these first urban ideas, that have been later integrated into the design.
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URBAN THOUGHTS Urban thoughts Different levels of height - interact
Use vegetation to create space
Social contact between public & private
Different seating opportunities
Safefy environment day and night
PROCESS
Different vegetation through the year
Public connection to the stream
Different speed & great accessibility
Urban gardening
Actractive urban installations
Big scale
Small scale
Grid, hard
Organic, soft
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Urban thoughts
Inviting openings to the center
Noise barrier for cars
It should be possible to look through the area Bike workshop
Stream continue
Low traffic activity
PROCESS
Important corner - shows activity Gas station - creates a lot of activity Private vs public
Easy public access A lot of activity in both directions
Playground for kids
Should bicycles be integrated? Public access both side of the stream.
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PROCESS
Young I
Young II
Elderly I
Elderly II
Family I
Family II
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Mixing user groups One of the main focus points in this project is to achieve a rich diversity of user groups. People of all ages should be gathered underneath one roof to encourage the intergenerational interaction.
Sustainable Architecture
PROCESS
As mentioned in the concept, the different user groups should not only be mixed on the site, but also within the blocks. The illustration on the left shows four different proposals on how to organise the different apartment types.
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PROCESS
1
2
3
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Development of the ”Social belt” The space between the buildings, the so-called ”social belt”, should serve as a connecting element of the different blocks on the site. In the following study, several ideas for the definition of this space, using the building volumes, have been found. In all three proposals, the area between the building has been raised by one level, to create a more private space.
In the first proposal four sets of three to four volumes on each side of the ”social belt” form three gaps that can be used as crossings through the area. On two points, the belt opens up towards South to offer bigger spaces for certain functions.
2
By reducing the number of blocks within one set to two to three volumes on each side, a more open structure can be achieved. It also creates an additional passage through the site.
3
In this improved version of proposal 2, the focus has been laid on the subdivision of the area. The composition of the volumes should define several meeting zones of different qualities.
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PROCESS
1
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PROCESS
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Midterm proposal After finding the basic shape of the buildings, a lot of work has been put into organizing the different apartments within the blocks and solving the access situations. In the end, a central staircase with three apartments placed around it turned out to be the most suitable solution. It assures both, good daylight conditions in each apartment and a staircase that is both, economical and inviting.
PROCESS
The space between the two building rows has been raised by one level to achieve a clearer division between the private and public areas. It should serve as a meeting point for the residents with common vegetable and herb gardens and urban installations to enhance the social bond between the user groups. An important aspect of the concept is, that there is a direct access to this area from each block. Furthermore, the façades have been designed as an extension of the ”social belt”: Balconies in front of each apartment should provide it with life and create a diversity in the design of the building. In the ground floor areas facing Hjulmagervej, several additional functions, like a sports hall, a bicycle workshop and a café, have been placed to attract people who are passing by. Also, the paths in the openings between the buildings have a more public character and should lead through the site down to Østerå. Underneath the raised semi-private outdoor space, functions with no need for daylight have been placed, such as car and bicycle parking, laundry and storage rooms, as well as technical rooms.
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Midterm urban thoughts
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Indoor sportshall
Coworking
PROCESS
CafĂŠ
Bicycle workshop
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Urban gardens
Playground
Commom rooms PROCESS
Playground
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AFT E R M IDT E RM
In the following phase, the concept is evolving from the points noted at the midterm. This section explains the post-midterm process of how the concept has been developed.
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Post midterm phase After the midway critique, the raised space between the buildings has been evaluated again. Due to the fact that the middle apartments in the Southern blocks only have windows on one facade, there are problems concerning daylight in the living areas.
The focus has also been laid on the places the residents pass on their daily routines and their potential as meeting points. In the next step also the shape of the buildings has been re-examined. The Northern building should get a more urban look so that it interacts better with the other buildings on Hjulmagervej and the city centre. In the following section, the further development of the form, based on the new findings, is described shortly:
In order to achieve better daylight conditions and to increase the accessibility of the social belt, the space has been lowered to the ground level.
In this design, the single blocks have been given a more uniform look, while the movement from the former shape has been kept. This solution creates larger and more divided spaces between the buildings.
4
Here, some of the elements of proposal 3 and the midterm proposal have been merged. In order to relate better to the context, the heights of the single blocks are decreased from East to West.
2
This proposal is an alternative version of the first one. Here, two one-storey-high buildings are implemented on both ends of the site, to make space for a sports hall on the one and car parking on the other side, while giving the ”social belt” a clearer finish.
5
Next, the Southern houses are rotated again, to ensure equal views and light conditions in every building. Additionally, it also creates bigger and better-defined spaces.
3
By turning the buildings in the South 90°, the ”social belt” opens up towards Østerå and several smaller spaces are created between the blocks. The rotation also leads to a new orientation of the apartments.
6
In the last step, the height of the blocks has been adjusted to the surrounding buildings. While the residential blocks in the East are up to 15 m high, the industrial buildings in the West are only half the height.
PROCESS
1
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1
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Further development of the ”Social belt” When developing the design of the project, also the work on the social belt continued. In the next step, the size of the urban areas has been investigated in order to achieve attractive urban spaces with adequate light conditions.
In the first version, the buildings have been placed in a straight line, following the street. By doing this, the ”social belt” gets a very strongly orientated, elongated shape.
2
In the next step, the orientation of the buildings has been kept, while some of the blocks have been pushed inside to create different spatial settings. This should make the walk through the belt more interesting.
3
In the third proposal, the abrupt jumps have been smoothened to achieve a more organic form. Here, also the street line changes as it gets a little bend that should invite people into the area and lead them down to Østerå.
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Final proposal The final result of numerous investigations and new proposals is the design shown on the left. At a first glance, the shape looks very similar to the midterm proposal. However, in the process, small details have been changed and more clarified which has a big impact on the overall quality of the design. PROCESS
The Northern blocks, facing Hjulmagervej span from five to three storeys to create a graduation from the tall buildings in the East, down to the lower industrial buildings in the West. The semi-detached houses in the South are, on the contrary, only two stories high in order to keep the shadow casting on the ”social belt” limited. While the blocks have a more massive, united and consequently urban shape from the street view, the structure opens towards the creek. Every apartment has a balcony orientated against South to ensure sunny open spaces during the summer months. The orientation against the ”social belt” also encourages the social interaction between the residents on different levels.
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1 35
o
10 meters gap between the buildings: 10 m Total sun radiation: = 487189 kWh = 488 kWh/m2
N 10 20
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PROCESS
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20 30 40
Determining the Gap between the blocks The outdoor environment is a crucial factor to make people stay and use the central zone over a long period during the year. By investigating different distances between the buildings the most suitable gap has been found:
50
06 21 10 meters 60 A distance of 10m between the buildings creates a 35° angle bet70 and the highest point of ween the bottom of the Northern buildings 80high summer sun to hit the the Southern buildings. This only allows the lowest part of the Northern block, which means that the ”social belt” will E W for most of the time be in shadow 09 18
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15:39
12
08:57
2 12 meters gap between the buildings: 30 Total sun radiation: = 663226 kWh 12 m = 664 kWh/m2
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12 meters 70 By only increasing the distance by two meters, 36 % more sunlight in 80 the “social belt” can be achieved due to the lower angle of 30° to the buildings in the front. Because the intimacy of the area between the W building can still be kept with18a 12 m gap, this distance has been cho09 sen for the project. 12
15
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93 08:57
E
1
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Ill. 75
Solar cells design In order to achieve the requirements of a Net Zero Energy Building (Net ZEB) to produce as much energy as consumed, different layouts of a photovoltaic system (PV) have been investigated in Ladybug. The PV’s are placed on the flat roofs of the higher blocks to the North.
In the first attempt, the PV’s are angled 15° towards South to increase their efficiency. For 2x1 m meter panels, the attica would have to be 0.5 m high in order to hide them. Given the fact, that the PVs will not be seen on the roof anyways and in order to prevent maintenance difficulties, the decision has been made to not integrate them into the envelope. Due to shading, this setting can only produce 90.480 kWh a year. This is only half the amount of the actual energy demand of 15 kWh/m² which sums up to a total annual energy consumption of approximately 138.400 kWh.
2
Because the shading has been the biggest factor in decreasing the efficiency of the PVs in the previous set-up, the same simulation has been done on a flat surface that has been raised to the edge of the attica. This increased energy production remarkable. Now, approximately 155.295 kWh a year can be produced and the demand can be met.
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1 Design of the private outdoor spaces While having our overall concept, aesthetical and climatic aspects, as well as social demands in mind, different ideas for the private outdoor spaces have been developed. In a next step, four proposals have been looked at in detail and have been rated in four categories: social quality, aesthetics, solar radiation and daylight factor.
PROCESS
To measure the sociability, the number of neighbours, one can interact with from the balcony has been counted. Jan Gehl’s investigation about conversation distances has been used as a reference. According to him, the distance between two people should be less than seven meters in order to have a convenient conversation. (Gehl, 2011) However, it is also important to have some more intimate areas, this is why the balance between privacy and communicative properties has been taken into consideration, too. Ill. 76
The aesthetic quality of the design has been rated considering the overall architectural look and the formal concept. The solar radiation and daylight factor, which are more scientifical parameters have been determined by simulations with the Grasshopper plug-in Ladybug and Velux Daylight Visualizer. In Ladybug the amount of sun on both, the Southern façade and the balcony floor area has been measured. The goal was to have as little sun radiation on the façade as possible, in order to prevent overheating, and a high amount of sunlight on the balcony to create a good outdoor environment. To ensure that the balcony design allows enough daylight entering the apartments, also the daylight factor has been taken into consideration when ranking the different proposals. In the end, the points of each category have been added up, counting the social and aesthetic factor twice, since they are of high importance for the overall concept.
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Score
Social (2x) Aesthetic (2x) Solar radiation Daylight factor Point
24
1
2
3
4
5
The first proposal strengthens the flow in the façade and creates an interesting play between the flat main façade in the front and the offset walls in the back. Furthermore, the balconies offer both, private areas in the back and more exposed and communicative areas in the front. So, the user can decide how social he/she wants to be. The partly covered balcony areas also invite people to use their private open spaces over a longer period of the year.
2
4
3
Score
Social (2x) Aesthetic (2x) Solar radiation Daylight factor Point
20
1
2
3
4
5
The second idea stands out with its very clear design and more vertical appearance, which causes a stronger division between the apartments. The positioning of the balconies also creates a high level of privacy, as they cannot be seen from the adjoining apartments.
Ill. 78
Score
Social (2x) Aesthetic (2x) Solar radiation Daylight factor Point
18
1
2
3
4
5
The façade of the third design is very easy to read since the main walls are not interrupted and the balconies form an additional layer in front of it. This proposal has the most exposed outdoor areas, which makes them very communicative, but doesn’t give the resident the opportunity for more privacy.
Ill. 79
Score
Social (2x) Aesthetic (2x) Solar radiation Daylight factor Point
15
1
2
3
4
5
In the fourth proposal, the long balconies in the first floor seem to connect the three parts of the block horizontally. There is also a vertical connection between two floors, that share a ”gap”. Like the other suggestions including a loggia, also this one offers private, as well as exposed areas on the balcony.
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PROCESS
Ill. 77
Decision of the facade materials Brick and ”Cembrit” panels have been chosen as the main material for the façade. More specifically, a thin, long stone is used to give the traditional material a more modern look. These two materials not only fit formally to the typically Danish brick buildings in Ø-gadekvartert and the modern buildings of the developing area Eternitten, but also refer to the history of the place: Until 2004 Eternitten has been the main production site for the fibre-cement product “Cembrit” and it is still the location of the company’s headquarter. After the decision over the material, different combinations and brick colours have been tried out, in order to find the perfect mix.
PROCESS
1
First, a beige to dark greyish stone has been tested on the façade, while only the balconies have been clad in light grey ”Cembrit” panels. The high variation in colour is very dominating in this attempt. Furthermore, the darker parts of the stone make the whole loggia seem very dark and shaded.
2
In the second proposal, the bricks in the loggia have been replaced by the “Cembrit” panels. Here the contrast between the two materials seems too hard, which destroys the harmony of the overall design.
3
As a next step, the colour of the stone has been changed to a lighter colour, which makes the whole building look lighter and more elegant. Nevertheless, the areas in the back of the open space are still slightly too dark.
4
In the fourth and last attempt, the cladding of the loggia has been changed again to the “Cembrit” panels. This time, the transition between the light grey panels and the greyish sandy brick is smoother and also the loggia area looks much brighter. The contrast will instead be made by the dark frame of the windows.
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Dimensioning of the window 2
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1
100
A single window measuring 1 x 1,6 m on the Southern façade facing the “social belt” creates a big contrast to the more open areas in the loggias. However, there are poor daylight conditions in the rooms behind due to the small window area.
Sustainable Architecture
2
In the next step, the size of the window has been doubled. As a result, the front façade and the ones shifted back communicate better and the loggia areas become less dominant. Of course, by increasing the glass area also the daylight situation in the apartment is improved.
4
Ill. 90
Ill. 91
PROCESS
3
3
Next, the length of the window has been adjusted to the terrace doors by increasing it by another meter. This leads to a more homogenous faรงade with very good natural light conditions inside the building.
4
After these first studies, that should give a feeling for the effect of the size on the aesthetics of the building and the daylight conditions in the apartments, the windows have been adjusted to the specific rooms and their functions. When dimensioning the openings, also the depth of the room has been considered.
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P R E S E NTAT I ON The section presents the final part for the new sustainable housing complex. Visualizations, as well as plans and sections, are presented in order to gain an overall understanding of the complex.
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A-A 6
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B-B
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1 - GAS STATION CIRCLE-K (public)
2 - COWORKING (semi-private or public)
3 - CAFÉ (public)
4 - BICYCLE WORKSHOP (public)
6 - FYSIO FITNESS (public)
It also shows the position of the different additional functions and their integration into the urban setting. The different access points are defined as more public or private ones regarding on their position and the areas they lead to. When approaching the building complex from the North and following the additional functions on the ground floor, the organic shape draws people further into the site down to the creek in the South. This access should serve as the main transit between the new developing area South and the city centre in the North. Additional bridges across Østerå should enforce the connection between the two sides.
7 - CARSHARING (semi-private) SEMI
PUBLIC
8 - COMMON ROOMS (semi-private)
9 - URBAN GARDENING (semi-private)
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PRESENTATION
5 - PLAYGROUND FOR KIDS (semi-private or public)
Explanation of the site The masterplan shows the area of a new social sustainable building complex at the fringe of the inner city of Aalborg and gives an overview of how it is connected with the surrounding context.
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”The social belt” “Life in buildings and between buildings seems in nearly all situations to rank as more essential and more relevant than the spaces and buildings themselves.” - (Gehl, 2011, pp. 29) Theory People and their activities attract people, whether they are in a building, in a neighbourhood or in a city centre. If someone can choose between walking on a deserted or a busy street, he or she will most likely choose the busy one. The same is valid for the different spaces in a residential area: People will rather prefer to sit in a semi-private front yard with a view on the street, than in a private and calm backyard, simply because there is more to see. An old Scandinavian proverb also tells it: “people come where people are” (Gehl, 2011, pp. 23) PRESENTATION
Social interaction An architecture that allows interaction between the residents is crucial to enhance social contacts. Well designed outdoor spaces, make people exchange greetings and develop conversations. The preconditions for a ”talk over the hedge” have to be given in order to make it happen. (Gehl, 2011, pp. 23). There is also a high relation between the intensity of a communication and the distance between the two interacting people that should be considered when designing communicative spaces. (Gehl, 2011, pp. 67) The ”social belt” should, therefore, offer various settings, with different levels of privacy where different kind of conversations can be held. It is important, that the residents can choose how social they want to be, in order to feel comfortable. To achieve that, the open space between the buildings is divided into smaller zones that are defined by the building volumes and their distance to each other. Narrow areas create more intimate spaces, while bigger ones encourage a more open interaction.
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Fall
Summer
Spring
Winter
PRESENTATION
Fagus
Beech
Rubus fruticosus
Rubus
Malus ‘Hyslop’
Paradise appletree
Betula utilis
Himalaya birch
Cornus alba Sibirica
Norway maple
Cornus alba Sibirica
Red-barked
Cedrus atlantica
Atlas-Ceder
Deschampsia cespitosa
Tufted hairgrass
Helichrysum italicum
Curry plant
Malus ‘Hyslop’
Paradise appletree
Calamagrostis
Reed grass
Betula utilis
Himalaya birch
Luzula nivea
Snowy woodrush
Prunus serrulata
East Asian cherry
Erica
Heather
Cyperaceae
Sedge
Magnolia
Magnolia
Cornus sericea
Red osier dogwood
Fagus
Beech
Lavandula
Underbara lavender
Cornus alba Sibirica
Norway maple
Magnolia
Magnolia
Lavandula
Underbara lavender
Betula utilis
Himalaya birch
Cornus alba Sibirica
Red-barked
Calamagrostis
Reed grass
Festuca Glauca
Blue Fescue
Deschampsia cespitosa
Tufted hairgrass
Sustainable Architecture
PRESENTATION
Vegetation types A large number of the vegetation which has been used in the ”social belt” is also seen in the Northern part of Jutland’s landscape. This is done to create a clear connection between the project area and the context. The vegetation consists of a wide mixture of trees, bushes and perennials, which provide life, fragrances and colours for any season. The defined vegetation will help to reinforce the idea of a new and recreational breathing space in this part of Aalborg city, where pedestrians and cyclists are encouraged to slow down and enjoy the surrounding nature and architecture on their way through the area.
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Social zones Based on a hierarchical system of common spaces, four zones with different levels of privacies have been defined. At one end of the scale is the public zone, such as the pathways and roads. Private outdoor spaces such as gardens and balconies are found on the other end of the scale. In-between the public and the private zones also semi-private and semi-public spaces are defined. A clear definition of the borders between the zones is a very important for the internal organization in order to prevent problems in housing groups (Gehl, 2011, pp. 59).
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Jan Gehl explains the semi-public and semi-private zones thusly: â&#x20AC;?Flexible boundaries in the form of transitional zones that are neither completely private nor complete public, on the other hand, will often be able to function as connection links, making it easier, both physically and psychologically, for residents and activities to move back and forth between private and public spaces, between in and out.â&#x20AC;?- (Gehl, 2011, pp. 113)
Zone 1 - Public Public spaces are very social areas that are generally open and accessible to the public, such as squares, parks, as well as streets and sidewalks. In the project, the streets and paths adjoining the site can be defined as public zones. They are interacting with the additional functions on the ground floor.
3
ZONE 3 - Semi/private This zone has a higher degree of privacy but is still not fully private. In the project, semi-private zones can be found between the building blocks in the North and the South and are mainly reserved for the residents. They serve as a transition between the semi-public pathways through the site and the private gardens.
2
Zone 2 - Semi/public Semi-private zones are only partially open to the public, like for example, the spaces created by the bend of the building and the path crossing the site. These areas are determined by their interaction with the outdoor activities.
1
ZONE 4 - Private Private areas belong to a single person or group of people only. Every apartment has direct access to a private open space, either in the form of a balcony or a terrace with garden. While offering a secure, intimate space it also enables communication to other private areas or the central semi-private space.
Private
Semi-private
Private
Semi-private
Semi-public
PUBLIC
Semi-private
Private
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PRESENTATION
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Social zones An isometric view shows how the three zones on the site are connected with each other and are defined by different paths and activities. A paving of large stones highlights the main routes through the site and the semi-public zone. The Western and Eastern façades of the buildings that are facing the area are not interrupted by balconies, which concentrates the activity on the ground floor. In the semi-private areas of the ”social belt” the size of the pavement becomes smaller and the area gets a third dimension by a more communicative façade. In front of each apartment, there is a private terrace which is defined by a wooden terrace so people will not enter them without getting an invitation. The zones in between the semi-detached houses are more open again and are defined by different activities. It opens further up towards the creek from where people passing by can look at the activities and participate in them.
113
PRESENTATION
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PRESENTATION
This view is from the public path on the southern side of the creek. It shows how the residents could use the zones between the semi-detached houses for different outdoor activities and gives an idea of the life that is created around them. On one side of the creek, the path is used by the public to stroll through the area, while on the other side there is a stronger connection to the semi-public zone on the site that might pull the public into the area. When looking at the building complex from the South, the architecture is very diverse and open with many balconies in different heights.
PRESENTATION
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PRESENTATION
In this image, the atmosphere in the private and semi-private areas of the ”social belt” can be well experienced. It gives an idea of how the area stretches between the blocks and how it merges into a more public zone towards the creek. Furthermore, it also shows how the “social belt” could be used as a recreational area by adults, as well as a playground for children.
PRESENTATION
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PRESENTATION
The northern façade towards Hjulmagervej has a more urban appearance and relates to the city with its large, open glass façades in the ground floor and the staircases. Various public functions on the ground floor, such as a fitness centre, a café, a bike shop, and a co-working space should attract the public to the area. The windows on the Northern façade are jumping in height to create some movement in a more static facade. This part of the complex is mainly shadowed but allows some light to shine through the openings and passages.
PRESENTATION
Elevation West 1:500
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Cross section A-A 1:500
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Elevation East 1:500
PRESENTATION
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PRESENTATION
Elevation North 1:500
Cross section B-B 1:500
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PRESENTATION
Elevation South 1:500
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14 %
14 %
People in each
Size (m2) - approx
Rooms
Young I
2
Young II
3
Elderly I
2
58
2
Elderly II
2
68
2
Family I
4
Family II
14 % 45-55 19 %
19 %
5
4
149
26 %
5 17 %
Square meters to additional functions (size m )
19 %
13 %
Building percent ( % ) 12 %
12 %
13 %
13 % 26 %
16
14 %
12
25 %
19 %
Percent of 1314 %%
Percent of different housing types
10 16 8 14 6 19 12 % 4 10 different 2 8 0 6
17 % 25 %
23 %
25 % 23 % 17 %
19 %
19 %
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4
10 8
Young II
Young I 12%% 13
15
19 % 8
10
12 %
23 %
00
17 %
7817 % 8 %11
Young II
1650 1240 35 10 3014 825
12% % 13 %
40
Elderly I 26 % 17 %
Young I
35 Number of people in the different housing types 30 50 25
14 %
17
20 40 15 35 10 30 %5 25 0 20
Young15I 10
%
Young II Elderly I
Young I
Elderly II 30 27 20 14 44 40 Family I
Young 0II
Elderly I Family II 30 24 20 14 44 40 14 %
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Elderly I 20 617 % 26 %
Ill. 111
Elderly I
Elderly II
Elderly II 12 %
Family I
Family I
Family II
14 %housing types Number of people in the different 13 %
45
Elderly I 26 %
40 35 30
Elderly II 12 %
8%
25
Family I Family II Elderly II 20 6 8% 12 % 15 14 % 15 12 % %4 4 Number of people in the different housing types Number of different housing types 13 10 10 Family I Family II Elderly II 2 Elderly 26 I % 2 50 5 16 17 % 8% 12 %5 14 % 00 0 45 0 Number of different housing types 153014 824 1020 714 1144 840Number of people in the different 30 housing 24 20 types 14 44 40 15 8 10 7 11 8 40 Family II Family I Elderly II 12 50 16 17 % 26 % 8% Sustainable Architecture 12 % 35 45types 14 Number of people10in the different housing Number of different housing types 30 40 Family II50 Family I 8 25 12 16 8% 12 % 35 20 45 6 Number of people10in the different housing types mber of different housing14 types 30 15 40 Family II 4 8 25 12 50 Young II
Young II
5
Young I Family II8 20 15 24 10 814% 7 44 11 408 30
Family I
12 %
Percent of people in the different housing 45 types
Young II 50
14 %
Young II
20 6 40 1512 Elderly I 35 4 10 10 different housing types in30 the 2 58 25 23 % Elderly II 250%0 20 6 3015 279 201014 7 441140 8 15 17 % 4 Family I 10 26 % 12 2 5
Ill.I 109 Young
1445
14 12
Percent 14of %people
of the different housing types Number ofNumber people in different housing types
Young I
17 %
23 %
25 %
17 %
Number of different housing types 16
14 %
housing types
15 9 10 different 7 11 housing 8 Percent of people in the types 13 %
0
14 % Percent of people in the different housing types
10 30 5016 8
Family I
45
17 % Young I 12 23 % Number of people in the differenthousing housingtypes types Number of different 35 40
25 Percent of different housing types 4514
Elderly II Family II
8%
50
45 14
17 % 23 % 25 % Number of different housing types
26 % 2 14 12 % % Percent of people in the different housing types12 %
cent of different housing types
ent housing types
14 %
14
Elderly I Family I
14 % 12 %
NumberFamily of people II in the different housing types 8%
50 16
Young II Elderly II
127
PRESENTATION
Percent of different housing types
12 % 12 % Number of different different housing types Percentofofpeople people the differenthousing housingtypes types Number ininthe 8 %17 %
14 %
448
Elderly II Family II
26 %
Young I Elderly I
17 %
Elderly I 110 26 %Family I
14 %
8 % 17 %
13 %
12 % Percent ofdifferent different housing types Number housing types Percent of peopleof in the different housing types 17 %
Young II
Young II
of different housing types 59 14 Number % Young I 17 % % Elderly I 172 Number of people in25the % different housing23types 14 % Square meters to apartments (size m2) Young II 6100 Elderly II 2
1923 %%
3
25 %
122 12 %
Total
2
85
Young I
Young I 17 % 23 % Percent of people in the different housing types
17 % 23 % 25 % Percent of people in the differenthousing housingtypes types Percent of different
25 % Percent of different housing types
Apartments
Percent of people in the different housing types
Percent of different different housing housing types types Percent of people in the
Percent of different housing types
Building program
Family II
Ground floor
PRESENTATION
Block 3
A-A
B-B
B-B
A-A
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N GSEducationalVersion
1:750
Young I
128
Young II
Sustainable Architecture
Elderly I
Elderly II
Family I
Family II
Block 3
COMMON ROOM 83,29 m² brutto 75,01 m² netto
ELDERLY II 89,22 m² brutto 67,75 m² netto
PRESENTATION
CO-WORKING 123,52 m² brutto 111,03 m² netto
YOUNG I 59,65 m² brutto 45,20 m² netto
N
1:200
GSEducationalVersion
Common room
Elderly II
Young I
Co-working
Sustainable Architecture
Ill. 113
129
PRESENTATION
130
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Ill. 114
Sustainable Architecture
131
PRESENTATION
Ground floor render This view is from an apartment designed for elderly, where a focus has been laid on accessibility. The view shows a spacious cooking and living area with direct connection to a private garden and the adjoining â&#x20AC;&#x153;social beltâ&#x20AC;? with its different zones. The low parapet of the windows ensures views to the outside when sitting in a chair, sofa or a wheelchair.
1. floor
PRESENTATION
Block 3
A-A
B-B
B-B
A-A
Ill. 115
N
1:750
Young I
132
Young II
Sustainable Architecture
Elderly I
Elderly II
Family I
Family II
Block 3
FAMILY I - 1 92,56 m² brutto 66,14 m² netto
PRESENTATION
YOUNG II 115,13 m² brutto 84,89 m² netto
ELDERLY I 72,76 m² brutto 57,53 m² netto
N
1:200
GSEducationalVersion
Family I
Elderly I
Young II
Ill. 116
Sustainable Architecture
133
2
2
2
2. floor
PRESENTATION
Block 3
A-A
B-B
B-B
A-A
Ill. 117
N
1:750
Young I
134
Young II
Sustainable Architecture
Elderly I
Elderly II
Family I
Family II
Block 3
PRESENTATION
FAMILY I 174,84 m² brutto 122,24 m² netto
FAMILY I - 2 82,28 m² brutto 56,10 m² netto
YOUNG I 72,27 m² brutto 55,60 m² netto
FAMILY II - 1 114,26 m² brutto 80,66 m² netto
N
1:200
GSEducationalVersion
Family I
Young I
Family II
Sustainable Architecture
Ill. 118
135
PRESENTATION
136
Sustainable Architecture
Ill. 120
Sustainable Architecture
137
PRESENTATION
Top floor render This view is from a family apartment for four people on the third and fourth floor. Here, the special feature of all the bigger apartments in the complex can be seen: A double high eating area next to a open cooking and living area, that not only creates an interesting spatial diversity and light composition, but also allows communication between the upper and the lower floor that enforces the life in the apartment.
3. floor
Block 3
A-A 2
PRESENTATION
2
B-B
B-B
2
A-A
Ill. 121
N
1:750
Young I
138
Young II
Sustainable Architecture
Elderly I
Elderly II
Family I
Family II
Block 3
ELDERLY II 92,30 m² brutto 68,06 m² netto
PRESENTATION
FAMILY I - 2 92,59 m² brutto 67,94 m² netto
ELDERLY I 72,76 m² brutto 57,53 m² netto
FAMILY II 206,85 m² brutto 148,60 m² netto
N
1:200
GSEducationalVersion
Elderly II
Elderly I
Family I
Sustainable Architecture
Ill. 122
139
PRESENTATION
W1
W2
SPACE FOR TECH. INSTALLATIONS - MECH. VENTILATION, LIGHTS
RAILING
F
B
ISO-KORB
140
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Ill. 124
Loggia detail
B
W1 115 mm 50 mm 300 mm 250 mm 20 mm 735 mm = 0,12 W/m2K
30 mm 70-100 mm
- WOODEN FLOORING - SCREED WITH UNDERFLOOR HEATING - THERMAL AND SOUND INSULATION - REINFORCED CONCRETE FLOOR - SPACE FOR TECHNICAL INSTALLATIONS / ALU GRID - SUSPENDED CEILING - TOTAL
20 mm 50 mm 50 mm 300 mm 410 mm 20 mm 850 mm
400 mm 9 mm 80-40 mm 250 mm 20 mm 890 mm = 0,08 W/m2K
F
W2 - FACADE PANEL - ALUMINIUM GRID - AIR FLOW - INSULATION - REINFORCED CONCRETE WALL - LIME PLASTER - TOTAL - U-VALUE
- WOODEN BOARDING - SUPPORTING STRUCTURE - POLYTHENE SEPARATING LAYER - XPS INSULATION - 2x WATERPROOF LAYER - CONCRETE (inclination 2%) - REINFORCED CONCRETE FLOOR - LIME PLASTER - TOTAL - U-VALUE
PRESENTATION
- BRICK FACADE FASTENED TO LOADBEARING STRUCTURE - AIR FLOW - INSULATION - REINFORCED CONCRETE WALL - LIME PLASTER - TOTAL - U-VALUE
10 mm 25 mm 50 mm 300 mm 250 mm 20 mm 655 mm = 0,12 W/m2K
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GR R
PRESENTATION
AERATED CONCRETE
AERATED CONCRETE
W1
SPACE FOR TECH. INSTALLATIONS - MECH. VENTILATION, LIGHTS
W1
SPACE FOR TECH. INSTALLATIONS - MECH. VENTILATION, LIGHTS
Ill. 125
142
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Roof detail
GR
R 100 mm 4 mm 400 mm 9 mm 150-40 mm 300 mm 410 mm 20 mm 1390 mm = 0,08 W/m2K
- HUMUS - FILTER FLEECE - DRAINAGE LAYER - ROOT PROTECTION - SEPARATING LAYER - WATERPROOF LAYER - XPS INSULATION - 2x WATERPROOF LAYER - CONCRETE (inclinatiton 2%) - REINFORCED CONCRETE FLOOR - SPACE FOR TECHNICAL INSTALLATIONS / ALU GRID - SUSPENDED CEILING - TOTAL - U-VALUE
80 mm 40 mm 4 mm 400 mm 9 mm 150-40 mm 300 mm 410 mm 20 mm 1410 mm = 0,08 W/m2K
PRESENTATION
- PEA GRAVEL 16 / 32 mm - SEPARATING LAYER - WATERPROOF INSULATION - XPS INSULATION - 2x WATERPROOF LAYER - CONCRETE (inclinatiton 2%) - REINFORCED CONCRETE FLOOR - SPACE FOR TECHNICAL INSTALLATIONS / ALU GRID - SUSPENDED CEILING - TOTAL - U-VALUE
W1 - BRICK FACADE FASTENED TO LOADBEARING STRUCTURE - AIR FLOW - INSULATION - REINFORCED CONCRETE WALL - LIME PLASTER - TOTAL - U-VALUE
115 mm 50 mm 300 mm 250 mm 20 mm 735 mm = 0,12 W/m2K
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PRESENTATION
Ill. 126
144
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Technical principle In this project many different active and passive strategies have been considered to stay within the energy frame of BR2020 while still having a good indoor environment during the whole year.
PRESENTATION
A mechanical ventilation is ensuring that the air is ventilated during the heating season so that the polluted air can be used for heat recovery. During cooling season, the windows are used for natural ventilation. The natural ventilation is mainly single sided, but in many apartments, there is an opportunity for cross ventilation across different zones. The inlet of the fresh air is from a shaft that goes to the basement, and the polluted air is being let out on the roof to not disturb the inhabited areas. The rainwater is being harvested from the roof and the surfaces of the urban areas. This water is being stored in the basement underneath the blocks and used for irrigation, laundry and toilet flushing. This takes a lot of the pressure from the local sewer system during floods and reduces the need for groundwater. The solar cells are providing the complex with enough energy so be self-sufficient with electricity. This was also a goal to make sure that the energy used in the complex only would be from a renewable source. The passive initiatives considered in the project is an air-tight thermal envelope with a low u-value corresponding to the standards of BR2020. The placement of balconies and loggias are also used as passive solar shading and only allowing the sun from south to hit the window surface during colder seasons.
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BK20 - Percent of the different energy use
18%
Energy consumption - The big block On the other hand, the energy consumption for the big block is calculated because it is the most efficient one regarding the ratio between the envelope and floor area. The big block consumes 13,62 kWh/m2 per year. 62%
BK20 - Percent of the different energy use
18%
20%
62%
20%
Ill. 127 6
4
6
3
5
2
4
kWh / m2
kWh / m2
PRESENTATION
5
1 0 Jan
Feb
Mar
Apr
May
Jun
Jul
3 2
Aug
Sep
Oct
Nov
Dec
1 Room heating
kWh/m2
Jan
El. for service of buildings
Feb
Mar
Apr
Equipment
Domestic hot water
May
Jun
Jul
Aug
0
Sep
Oct
Energy factors BK20: Jan Room heating
Nov
Heating = 0,6 Feb
Dec
El = 1,8 Mar
Apr
Ill. 128
El. for service of buildings Year BK20
Room heating
1,30
0,80
0,40
0,00
0,00
0,00
0,00
0,00
0,00
0,00
0,30
1,40
4,20
2,52
El. for service of buildings
0,20
0,20
0,20
0,10
0,10
0,10
0,00
0,00
0,10
0,10
0,20
0,20
1,50
2,70
Domestic hot water
1,20
1,10
1,20
1,10
1,20
1,10
1,20
1,20
1,10
1,20
1,20
1,20
14,00
8,40
Equipment
2,62
2,36
2,62
2,53
2,62
2,53
2,62
2,62
2,53
2,62
2,53
2,62
30,82
-
Sum
5,32
4,46
4,42
3,73
3,92
3,73
3,82
3,82
3,73
3,91
4,23
5,42
50,52
13,62
146
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May
J
Domestic hot water
BK20 - Percent of the different energy use
Energy consumption - The small block 34% The energy consumption is calculated with Be15 for one of the small blocks since it is the most critical one regarding energy use pr. m2. The small block consumes 19,86 kWh/m2 per year. This is higher because of the 50% ratio between the building envelope and floor area.
BK20 - Percent of the different energy use
34%
50%
16%
Ill. 128
16% 6
6
3
5
2
4
kWh / m2
kWh / m2
4
1 0 Jan
Feb
Mar
Apr
May
Jun
Jul
3 2
Aug
Sep
Oct
Nov
Dec
PRESENTATION
5
1 Room heating
kWh/m2
Jan
El. for service of buildings
Feb
Mar
Apr
May
Jun
0
Equipment
Domestic hot water
Jul
Aug
Sep
Oct
Energy factors BK20: Jan Room heating
Nov
Heating = 0,6 Feb
Dec
Mar
El = 1,8
Apr
Ill. 129
El. for service of buildings Year BK20
Room heating
2,80
2,00
1,90
0,00
0,00
0,00
0,00
0,00
0,00
0,00
1,60
2,90
11,20
6,72
El. for service of buildings
0,20
0,20
0,20
0,20
0,10
0,10
0,00
0,00
0,10
0,20
0,20
0,20
1,80
3,24
Domestic hot water
1,40
1,30
1,40
1,40
1,40
1,30
1,40
1,40
1,30
1,40
1,40
1,40
16,50
9,90
Equipment
2,61
2,35
2,61
2,52
2,61
2,52
2,61
2,61
2,52
2,61
2,52
2,61
30,67
-
Sum
7,01
5,85
6,11
4,12
4,11
3,92
4,01
4,01
3,92
4,21
5,72
7,11
60,17
19,86
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May Domestic hot water
PRESENTATION
Elderly II BSIM simulation Bsim has been used to document the indoor environment inside the most exposed apartment. Because the orientation of the windows are facing south/north an overhang shades the windows from the summer heat, and let in the heat from the sun during heating season. The mechanical ventilation is ensuring a good indoor environment when it is problematic to utilize natural ventilation. This is to ensure a good Co2 level and the heat recovery unit exploits the heat from the used air to heat up the fresh air. During cooling season natural ventilation can be applied in all of the rooms as single sided ventilation. All of the rooms also has the opportunity to utilize natural cross-ventilation by keeping the doors open.
Livingroom / Kitchen (zone I)
148
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Guestroom (zone II)
Bathroom (zone II)
Ill. 130
900 900 900 800 800 800 700 700 700 600 600 600 500 500 500 400 400 400 300 300 300 200 200 200 100 100 100 0 0 0
Rel RelRel humid humid humid % %%
Relative humidity The relative humidity should not exceed 60-65% during summer and 40-45% during winter. A too high humidity level is not only bad the health but has an impact on the building and could lead to a mold infection inside the building. In the Bsim model, the results show that we have sufficient ventilation regarding humidity.
Jan Jan Jan
Feb Feb Feb
Mar Mar Mar
Apr Apr Apr
May May May
Jun Jun Jun
Jul Jul Jul
Aug Aug Aug
Sep Sep Sep
Oct Oct Oct
Nov Nov Nov
Ill. 131
CO2 concentration The Co2 level cannot exceed 500 ppm above the outside value, in order to have a good indoor environment. This is prevented by ventilating mechanically during heating season and naturally during cooling season. In the Bsim model, the results shows that the indoor environment are satisfying regarding the Co2 level
Jan Jan Jan
Feb Feb Feb
Mar Mar Mar
Apr Apr Apr
May May May
Jun Jun Jun
Jul Jul Jul
Aug Aug Aug
Sep Sep Sep
Oct Oct Oct
Nov Nov Nov
Dec Dec Dec
Ill. 132
25 25 25
Temperatures Temperatures Temperatures
Dec Dec Dec
20 20 20 15 15 15 10 10 10 5 5 5 0 0 0
Jan Jan Jan
Feb Feb Feb
Mar Mar Mar
Apr Apr Apr
May May May
Jun Jun Jun
Jul Jul Jul
Aug Aug Aug
Sep Sep Sep
Oct Oct Oct
Nov Nov Nov
Dec Dec Dec
Temperatures In order not to have problems with overheating the number of hours above 26 degrees can not exceed 100 hours per year, and the hours above 27 can not exceed 25 hours per year. This can be ensured with passive strategies such as solar shading and natural ventilation. The result from the Bsim model shows that overheating wonâ&#x20AC;&#x2122;t be a problem in the apartment.
Ill. 133 Bathroom (zone I) Bathroom Bathroom (zone (zone I) I)
Guestroom (zone II) Guestroom Guestroom (zone (zone II) II)
Livingroom / Kitchen (zone III) Livingroom Livingroom // Kitchen Kitchen (zone (zone III) III)
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PRESENTATION
ppm ppm ppm
70 70 70 60 60 60 50 50 50 40 40 40 30 30 30 20 20 20 10 10 10 0 0 0
150
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E N DING
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151
ENDING
Conclusion Based on different user and context analysis a proposal to a sustainable residential building complex has been created. Various urban and visual qualities that have been discovered in an early analysis phase, have been used to define different zones at the site. This adds to the concept of achieving a social sustainability by providing a variety of settings to different users. The buildings are referring to its surrounding context in a subtle way, but with a modern touch. While the design of the façades facing the streets relates more to an urban setting with different public functions on the ground floor, the building form is more open more towards the creek. The single blocks and zones are connected by a â&#x20AC;&#x153;social beltâ&#x20AC;? that stretches throughout the site.
152
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ENDING
Reflection After the project has ended many aspects and thoughts could be reevaluated from the process to the finished proposal. The entrance solutions to the parking area that should serve as ”forced” meeting points for the residents on their way to and from their apartments could have been investigated in more detail. Also, their look and their connection to the ”social belt” could have been defined further. The paths running through the “social belt” could also have been more defined to improve the interactions amongst the residents. Furthermore, it could be questioned whether or not the concept of the social diversity works better in theory than it would do in real life. More material studies could have been made to figure out how different textures and colours would impact the outdoor space and the covered loggias.
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ENDING
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ENDING
Illustrations list Ill. 1 Ill. 2 Ill. 3 Ill. 4 Ill. 5 II. 6 Ill. 7 Ill. 8 Ill. 9 Ill. 10 Ill. 11 Ill. 12 Ill. 13 Ill. 14 Ill. 15 Ill. 16 Ill. 17 Ill. 18 Ill. 19 Ill. 20 Ill. 21 Ill. 22 Ill. 23 Ill. 24 Ill. 25 Ill. 26 Ill. 27 Ill. 28 Ill. 29 Ill. 30 Ill. 31 Ill. 32 Ill. 33 Ill. 34 Ill. 35 Ill. 36 Ill. 37 Ill. 38 Ill. 39 Ill. 40 Ill. 41 Ill. 42 Ill. 43 Ill. 44 Ill. 45
Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own image Own image Own image Own image Own image Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production
- Integrated design process - Gordon Cullen - Gordon Cullen - Gordon Cullen - Jan Gehl - Jan Gehl - Aalborg (kortforsyningen.dk) - Local plan (kortforsyningen.dk) - Vegetation (kortforsyningen.dk) - Transport (kortforsyningen.dk) - Serial vision (kortforsyningen.dk) - Serial vision - Serial vision - Nature side - City side - Østerå - Sun (dmi.dk) - Precipitation (dmi.dk) - Wind (dmi.dk) - Temperature (dmi.dk) - Noise (miljøgis.dk) - Air pollution (lpdv-en.spartialsuite.dk) - Section site B-B - Map (kortforsyningen.dk) - Section site A-A - Functions (kortforsyningen.dk) - Building heights (kortforsyningen.dk) - Morphology (kortforsyningen.dk) - Demographic (aalborg.dk) - Demographic (aalborg.dk) - Demographic (aalborg.dk) - Building typography - Building typography - Building typography - Building typography - Building typography - Building typography - Building typography - Collage sense of home - User analysis - User behavior - User behavior - Building program - Building program - Building program
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Own production Own production Own production Own production Own production Regel villages Nicolinehus MVRDV Nieuw Bergen The Mountain Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production
- Building program - DGNB criteria - Passive and active strategies - Passive and active strategies - Passive and active strategies - (effekt.dk) - (aart.dk) - (mvrdv.nl) - (archdaily.com) - Design criteria - Concept - Form studies - Form studies - Collage urban thoughts - Drawings urban thoughts - Drawings urban thoughts - Mixing user groups - Development of the ”Social belt” - Midterm proposal - MIdterm urban thoughts - MIdterm urban thoughts - Form studies - Further development of the ”Social belt” - Final proposal - Determining the Gap between the blocks - Determining the Gap between the blocks - Determining the Gap between the blocks - Determining the Gap between the blocks - Solar cells design - Design of the private outdoor spaces - Design of the private outdoor spaces - Design of the private outdoor spaces - Design of the private outdoor spaces - Design of the private outdoor spaces - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Decision of the facade materials - Dimensioning of the windows - Dimensioning of the windows - Dimensioning of the windows - Dimensioning of the windows
Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own image Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production Own production
- Masterplan - ”The social belt” - Vegetation types - Social zones - Social zones - Social zones - Under render 1 - Under render 2 - Under render 3 - Elevation west - Cross section A-A - Elevation east - Elevation north - Cross section B-B - Elevation south - Østerå - Building program - Building program - Building program - Building program - Plan 1:750 - Plan 1:200 - Indoor render 1 - Plan 1:750 - Plan 1:200 - Plan 1:750 - Plan 1:200 - Indoor render 2 - Plan 1:750 - Plan 1:200 - Loggia detail - Roof detail - Technical principle - Energy comsumption - The big block - Energy comsumption - The big block - Energy comsumption - The small block - Energy comsumption - The small block - BSIM simulation - Relative humidty - CO2 concentration - Temperatures
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Sustainable Architecture
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Sustainable Architecture