Reshaping the City-Railway Relationship
Urban Analysis and Recommendations of Site C, Cardiff for CPT910 Autumn Studio, Cardiff University
Robert Blake
Submitted January 2023
Document Navigation
Introduction
Primary Aspects
Other Key Aspect
Policy and Precedents
Analysis Overview
Strategic Design Framework
word count: 3,219
2
22
3-16 17-18 19-21
23-30
Photography by author unless stated otherwise Page word count: 23 words Student number: 1731417
Total
Why site C?
Site C was selected due to the dominance of railway infrastructure within the site. Being a location for transit-oriented development, this is an important feature of the site however, at the local scale, railways are generally viewed as posing negative impacts on factors such as walkability, access and safety. I found this an interesting challenge which I wanted to explore.
Additionally, I believe the presence of the railways have created four zones of distinctive characteristics within the site (described below). This provides an interesting starting-point in an area which otherwise lacks distintive features such as historic buildings.
The site also offers wide expanses of undeveloped land, such as the Adam Street car park. This is rare in inner-city locations and acts as a blank canvas for future development.
Events and shopping
Area characterised by hotels and the International Arena events space. Importantly, this area connects Site C with the city centre retail area.
Cardiff
University Campus
This area is dominated by the large University of South Wales campus building, along with student accommodation.
Capital Quarter
This area known as ‘Capital Quarter’ is a modern development consisting of student accommodation and offices. Site C
Underused public square
This zone offers large swathes of open space but currently seems very under-utilised
Location of site C in regional and policy context (OS 2021a & Cardiff Council 2016)
Introduction
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Central Enterprise Zone and Regional Transport Hub Site C
Map highlighting the four distinct ‘zones’ within Site C, created by the railway line (OS 2021a)
Site B
Site A
Page 2
Open land and car parking is a key feature of the site
Permeability
Pedestrian Permeability
Permeability in Site C is impeded by large blocks, and the presence of the railway lines which cut across the site.
The average-weighted area perimeter (AwaP) scores for Site C, as well as across the wider 1km analysis area, are as follows:
Within site C: 731
Within 1km area: 741
Thus, permeability is slightly worse within the site, compared to the surrounding area. The biggest factor here is the railway lines.
The block perimeter map (bottom, left) identifies the largest perimeters of blocks. Reducing the size of the largest of these blocks should be a consideration for increasing permeability.
Interface catchment calculations (below) show that there are similar levels of permeability from different starting points within the site; however the best permeability is closest to the city cetre outside the International Arena.
8,181m
Capital Quarter
8,432m
International
9,135m
Interface Catchments within a 400m walkabe area from three different starting points (starred). Catchments were calculated using methodology from Dovey & Pafka (2017). Maps derived from OS (2021a)
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Figure ground map with added details including roads and railway lines (OS 2021a)
Map of Site C highlighting pedestrian areas (yellow) in contrast to the surrounding built environment (OS 2021a)
Block perimeter lengths, highlighting the largest and smallest block sizes (map derived from: OS 2021a)
Callaghan Square IC=
IC=
Arena IC=
1km x 1km 050100 25 200m 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m
Primary Aspect 1 Page 3
Pedestrian link from NW of site C to City Centre
Connectivity
Site C provides a range of connections locally and regionally. However, there are some key connectivity shortfalls as identified below.
Pedestrian: Below shows the limited walking routes through Site C. There are only two places to cross the East/West railway line which severely restricts connectivity.
Cycling: There is only one designated cycle route connected to the site, which runs across the south boundary. Within the site, it is not appealing to cycle.
Bus: There are few bus stops or routes within Site C.
Right: Maps provide an increased perception of connectivity and help people navigate their route.
Crucially, this is a transit-oriented site and thus is in close proximity to a number of railway stations and bus interchanges; namely Cardiff Central. Various routes exist to the station yet a lack of dedicated cycle routes impedes overall connectivity
Map showing local-scale walking, cycling and public transport connectivity (Mapbox 2022)
Map showing cycling and public transport connectivity between site C, and surrounding areas (Mapbox 2022)
Primary Aspect 2
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2km x 2.05km 050100 25 200m 1km x 1km 050100 25 200m
Page 4
Railway crossing points
Density (1)
Building height, Coverage and Car Parking
Overall, Site C has a lower density compared to its surrounding area, with a coverage of 22.1% within the site boundary, compared to 28.6% coverage within the 1km study area. In both circumstances, this is a low density for a central site within a capital city.
There is a wide spread of building heights, the tallest buildings being the Altolusso (53m) and Ty Admiral (58m), as located below.
The lower density is caused by the dominance of railway lines (which are not calculated within coverage) in addition to wide areas of open space. The lower right map shows how many of these open spaces are dedicated to surface level car parks. The quantity of car parking is an opportunity as much of this land could be converted to more valuable and inclusive land uses.
Density & distribution of car parking (Mapbox 2022)
Primary Aspect 3(a)
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Height (m) <5 25-30 5-10 10-15 15-20 20-25 30-40 40-50 >50 Legend Buildings Buildings with internal parking (e.g. multi-storey) Surface-level car parks Site C boundary 0.9km x 1km 050100 25 200m 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m
Building height (OS 2021a, OS 2021b)
Figure ground map. Site C coverage = 22.1% (OS 2021a)
Page 5
Ty Admiral Altolusso
Density (2)
This floor area ratio (FAR) map shows that while there is a low density across the site, some plots are still intensively developed, reflecting the areas of the site which involve high-rise buildings.
Across the 1km, FAR values are highest to the north-west and fall to the south-east. Site C contains some of the highest-FAR plots within this vicinity.
Site C plots with the highest FARs
Radisson
FAR = 11.06
Primary Aspect 3(b)
Page word count: 59 words Student number: 1731417 0-0.5 0.5-1 1-1.5 2-2.5 2.5-3 1.5-2 3-3.5 3.5-4 4-4.5 5-5.5 5.5-6 4.5-5 >6 0 Floor Area Ratio (FAR) No data
C
1km x 1km 050100 25 200m Floor Area Ratio
Floor Area Ratios (FARs) of plots within and surrounding Site
(Land Registry 2022, OS 2021a)
Blu hotel (A)
Ty Pont Haearn (B)
Google
A B Page 6
FAR = 10.87
(2023)
Formal mix
Character areas
Characterised by a mixture of large-scale buildings with low permeability
‘Character area’ study, inspired by Black & Sonbli (2019) (Basemap: OS 2021)
Of�ices
Area dominated by hotels, offering proximity to train station
Mostly traditional semi-detached and terraced housing
Warehouses, industrial and distribution units
Low-rise late-20thC of�ices, showing signs of age
Low-density car-dominated housing built c.1990
Shopping area characterised by historic buildings
Shopping centre of contemporary design
Houses converted to of�ices for small businesses
Listed building age (year)
1825-1849
1850-1874
1875-1899 1900- 1924
Listed buildings found within, and in proximity to, Site C (OS 2021, Cardiff Council 2017)
There are a range of distinct building styles across the site which can easily be grouped. Based on age, morphology and appearance, I have created the above ‘character area’ map which I feel well-reflects the nature of building styles across the site. Examples of some of these categories are shown below. The listed building map above shows a further aspect of formal mix; highlighting the lack of historic (pre-1920s) buildings in Site C.
As can be seen, most listed buildings are found in the city centre.
Primary Aspect 4
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post-
Local
1925
listing (undated) pre-1825
1km x 1km 050100 25 200m Millennium of�ices 90s of�ices Millennium residential Hotel quarter Historic city centre Contemporary workspaces Modern shopping Industrial centres City suburb Small business central Large city blocks 050100 25 200m 1km x 1km
Within Site C Bordering Site C Elsewhere
c. 1990-2000
built
with a strong European, ‘capital city’ feel
Modern of�ice buildings and student housing
‘Large city blocks’
Page 7
‘Contemporary workspaces’ ‘Millennium offices’ ‘Hotel quarter’
Functional mix
Site C has a range of functions, yet its predominant uses are offices and housing/ hotels. This is refected through the prominence of ‘live’ and ‘work’ functions identified on this Visit/ Work/ Live map.
Site C has few ‘visit’ locations aside from the International Arena. In particular, it lacks in shops and places to buy food. These establishments are concentrated in the city centre, but further options for office workers and residents would be valuable within the site.
Primary Aspect 5
Page word count: 78 words Student number: 1731417 1km x 1km 050100 25 200m
Visit/ Work/ Live land uses map (Land Registry 2022, Google 2023) Legend source: Dovey & Pafka (2018, p. 26)
Page 8
Categorisations of Visit/ Work/ Live (Dovey & Pafka 2018, p. 26)
Public-private interfaces
050100 25 200m
1km x 1km
Impermeable - Opaque
Impermeable - Transparent
Direct - opaque
Direct- transparent
Pedestrian setback
Car/vehicle setback
Construction site bourndary
Unclassi ed interfaces
Site C boundary
Railway lines
Public/ private interface map (Categories adapted from Wood & Dovey 2015, map derived from OS 2021)
Impermeable - Opaque
Impermeable - Transparent
Direct - opaque
Direct- transparent
Pedestrian setback
Car/vehicle setback
Impermeable - Opaque
Construction site bourndary
Impermeable - Transparent
Unclassi ed interfaces
Direct - opaque
Site C boundary
Direct- transparent
Railway lines
Pedestrian setback
Car/vehicle setback
Impermeable - Opaque
Impermeable - Transparent
This map shows the range of public-private interfaces found in the site. In comparison with the city centre, the site greatly lacks direct-transparent interfaces which provide “vitality, identity, and safety” (Wood & Dovey 2015, p. 5). In contrast, there are a range of impermeable and opaque interfaces which reduce permeability and the benefits of natural surveillance. This is offset by a range of pedestrian-setbacks which produce spaces of varied streetlife; unlike impermeable and opaque interfaces (Stevens 2019). Examples of each interface are demonstrated below.
Direct - opaque
Direct- transparent
Pedestrian setback
Impermeable - Opaque
Car/vehicle setback
Impermeable - Transparent
Construction site bourndary
Direct - opaque
Unclassi ed interfaces
Direct- transparent
Site C boundary
Pedestrian setback
Railway lines
Impermeable - Opaque
Car/vehicle setback
Impermeable - Transparent
Construction site bourndary
Direct - opaque
Unclassi ed interfaces
Direct- transparent
Site C boundary
Pedestrian setback
Railway lines
Impermeable - Opaque
Car/vehicle setback
Construction site bourndary
Impermeable - Opaque
Unclassi ed interfaces
Impermeable - Transparent
Site C boundary
Direct - opaque
Railway lines
Direct- transparent
Pedestrian setback
Car/vehicle setback
Construction site bourndary
Unclassi ed interfaces
Site C boundary
Railway lines
Impermeable - Transparent
Construction site bourndary
Direct - opaque
Unclassi ed interfaces
Direct- transparent
Site C boundary
Pedestrian setback
Railway lines
Car/vehicle setback
Construction site bourndary
Unclassi ed interfaces
Site C boundary
Railway lines
Primary Aspect 6
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Page 9
Building types
Site C is characterised by a wide variety of building styles, which has led to an incongrous urban form. As can be seen from the analysis of block types (using classifications of Dovey 2016), site C predominantly has ‘tower’ forms. These each have individualistic qualities which contribute to the lack of an overall structure and place identity.
Building plot typologies
Primary Aspect 7
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urban form - Tyndall Street Zenith student accommodation (recently completed) Modern offices c. 1930s semi-detached homes Approaching Central Link roundabout Capital Quarter redevelopment Old Tyndall Street
Contrasting
Above:
Photographs showing contrastring urban typologies at each end of Tyndall Street, which stretches for 0.5km along the south side of Site
C. The photographed buildings all fall within Site C’s boundary.
Perimeter block Irregular/ varied Google (2023) Google (2023) Building plot typology map (map: Land Registry 2022, categories: adapted from Dovey 2016) 1km x 1km 050100 25 200m Page 10
Tower Slab
Public spaces
Public space hierarchy and network
Callaghan Square and Capital Quarter are considered to be the most important public spaces.
There is a lack of green space within the site.
Many public spaces appear to be under-used.
Public space typology
There are various small pieces of public space, but these are not well distributed across the site. Whilst small public spaces serve an important purpose within the site, there is an overall lack of larger public space in Site C. The current effectiveness of Callaghan Square (the site’s key public space) will be assessed on pages 14-16.
Primary Aspect 8
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Inspired by Black & Sonbli (2019)
Inspired by Carmona (2015)
Capital Quarter The
University of South Wales Craiglee Drive park/playground Cemetery Park Newtown
Capital Quarter The Hayes University of South Wales Craiglee Drive park/playground Cemetery Park Newtown 1km x 1km 050100 25 200m 1km x 1km 050100 25 200m Page 11
Callaghan Square
Hayes
Callaghan Square
Green & blue infrastructure
Across the wider 2km area, there is a relatively good level of green and blue infrastructure. Much of the green infrastructure (e.g. alongside railways/roads and in private gardens) is inaccessible, however it still provides benefits, e.g. increased biodiversity and visible greenery. The map shows the range of green space accessibility.
Within Site C specifically, there is a general lack of green space. This is concentrated to the public spaces at Callaghan Square and Captial Quarter.
Blue infrastructure is prominent in the site with the presence of the dock feeder canal. Recent development alongside the Zenith student block has capitalised upon this feature, but much of the dock feeder is inaccessible (photos below).
Blue infrastructure highlights
Opportunities for increasing green infrastructure
Sections of railway line, as demonstrated in this 3D model, provide various layers and heights where green infrastructure could be installed. Currently, such opportunities are under-utilised. Trees, and bushes could help to increase biodiversity as well as screen the railway; additionally providing a place for people to enjoy and visit.
Possible surfaces for increased greenery
Model uses data from OS (2021a)
Legend Fully accessible Green infrastructure Non-green infrastructure Accessible bushes Entirely inaccessible Pedestrian/ cycle access Road access – people can cross Inaccessible road space
Primary Aspect 9
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Inaccessible canal Regenerated canalside Callaghan Square 2km x 2km 050100 25 200m
Page 12
Social mix
The key demographic group using the area are students and professionals, due to the presence of offices and student accommodation.
This map identifies the key student locations across Site C. As shown through the FAR analysis, the student accommodation plots identified have a high FAR value, reflecting the density of students living in this location.
Other social groups to consider are the homeless and refugees. Some of the hotels seem to be used as temporary accommodation (see photograph).
Distribution of student buildings in and around the site (OS 2021)
Primary Aspect 10
Page word count: 78 words Student number: 1731417 Student accommodation University buildings Public library 050100 25 200m 1km x 1km
Students congregate at the front of the University of South Wales
Page 13
Budget hotel appears to be used as temporary accommodation for refugees/ homeless.
Street life: Stationary activities
As analysed on page 11, Callaghan Square and the Capital Quarter are two key public spaces within Site C. Thus, these two public squares are the focus of the stationary & transitory street life analysis. Comparing these two sites enables an assessment of which public square is functioning best, and the reasons for this can be considered. The locations were both observed during a 30-minute period during a Friday afternoon. Using categories devised by Mehta (2019), the activities observed have been categorised.
Capital Quarter Callaghan Square Square
Primary Aspect 11(a)
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Sitting on statue steps, smoking
Skateboarding and filming Chatting and smoking on bench
Homless man occupying bus shelter Man sitting, using mobile phone Waiting at traffic lights
Homeless encapment; two men lingering
Man uses bin
Girl standing, on mobile phone
Couple sitting on bench drinking a hot drink
Café worker packs up tables and chairs
Couple stop for the man to tie his shoelaces Student appears to collect Deliveroo order
N N Page 14
Mehta (2019)
Street life: Transitory activities
Transitory activities have been divided into walking and cycling, as observed across the two key public squares. The techniques employed for this analysis have been inspired by the work of Gehl & Svarre (2013) and Colville-Andersen (2018). Mapping data from OS (2021a).
Capital Quarter Callaghan Square
Walking routes
A key thoroughfare exists from across the Smart bridge to Tyndall Street. Users tended to be students and office workers.
Cycling routes
Cycling was noticably less popular across Capital Quarter compared to Callaghan Square during the period observed. This is despite the presence of much cycle parking and a well-stocked cycle hire station. Cyclists tended to be food delivery riders.
A range of cyclists were seen traversing Callaghan Square; including people cycling together and a BMX rider practicing tricks.
Callaghan Square is popular for walking through, rather than dwelling in. It appears to be an important route connecting residential areas (e.g. Butetown) with the city centre, and users reflect a wide demographic. Many wheeled suitcases were observed, reflecting the site’s importance for regional travel.
Primary Aspect 11(b)
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N N N N
Observation point Legend Walking route (multiple colours) Pedestrian crossings Line thickness = numbers of people 1 5 10 15 Walking patterns were observed over 30-minute period one Friday afternoon. Line thicknesses represent the number of people following particular route. Site C boundary
Page 15
Walking data from Callaghan Square transcribed by computer; with line width representing number of people
Street design
Following on from the analysis of Callaghan Square’s street life, this page consideres its materiality and street design through photograph analysis. Given it seems to be under-used as a square and more as a walking route, understanding its design characteristic in more detail will help to inform future proposals.
Materiality
The paving materials are distinctive and functional. T26he red ‘block weave’ paving is indicative of its era and perhaps more timeless materials would give greater longevity.
Street art / grafitti
A wall for grafitti has been provided, presumably to contain grafitti in one place. Yet, many benches in the area have also been spray-painted; degrading the street furniture.
Lighting
Too enclosed
Callaghan Square has an attractive lighting design with distinctive uplighter designs. These also are very functional increasing safety at night.
Open/ enclosed space
Good levels of enclosure
Enclosure is important, as people have a “preference for staying at the edges of space” due to perceptions of safe (Gehl et al. 2006, p. 30). Currently many areas lack enclosure, being too exposed.
Too open
Primary Aspect 12
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Page 16
Urban crime
Crime is an issue affecting Site C. Parts of the urban design feel unsafe due to a lack of visual surveillance, opaque facades and even evidence of criminal activity such as tresspassing and grafitti (see photos).
I was interested to understand public perceptions to crime in the area, and whether these views correlated with reality. Therefore, I completed an intercept survey on the site to ascertain users’ views on safety. The maps on the next page compare the actual locations of crime, to where people think crime takes place.
Below, the survey results show a mean safety perception score of 4.8. Thus, the site feels quite unsafe currently.
Crime survey
No. of responses: 5
Safety (1-10): Mean score of 4.8
40% felt unsafe due to crime risk
20% (one person) said they saw evidence of crime
Most common crimes suggested: Muggings, vandalism, theft, drug dealing
Only 1/5 respondents was a student
2/5 respondents were female
Areas in Site C which feel unsafe
Biddulph (2007) identifies that blank walls, ground floor parking and high-rise schemes reduce vsiual surveillance, thus increasing crime opportunities. These are issues affecting site C as shown in these photographs.
Page 17 Other Key
1(a)
Aspect
Page
count: 138 words Student number: 1731417
word
In this area, have you…? (tick which apply) o o o o
Urban crime
Perceived locations for crime Actual locations of crime
Number of reported crimes, November 2022 (SWP 2023)
Survey responses when individuals asked, ‘where do you think crime most likely occurs?’ (each colour represents a different respondent - each were able to draw on a map to respond)
*The Site C boundary was not included on participants’ maps
Locational crime data from November 2022 (SWP 2023)
These maps highlight the discrepancies between where people think crime may take place, and where it does take place. Interestingly, much crime takes place in the city centre which participants did not mark on their maps.
Other Key Aspect 1(b)
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1 5 20 10
Page 18
Policy context
The local plan sets out the following key aims in its policy for the Enterprise Zone (which includes Site C). The Zone is identified in the policy context map (right)
Policy KP2(a) Cardiff Central Enterprise Zone and Regional Transport Hub
Key aims:
• Development to create ‘destination spaces’
• Enhanced pedestrian and cycle access across the railway lines
• Provision of a rapid transit bus corridor: “high frequency public transport services which will run along on-road and off-road infrastructure”
• Improve links between the arena area with Queen Street station
• Improved wayfinding, street furniture, paving and cycle parking
(Cardiff Council 2016, pp. 48 & 106)
Policy and Precedents
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Page 19
Policy map (Cardiff Council 2016, p. 52)
Precedent review (1)
Precedents incorproating railway infrastructure have been selected, as this is a key feature of site C .
Stratford Town Centre Link, London (UK)
The Stratford bridge “forms a vital pedestrian crossing over one of the busiest sections of rail in London” (Knight Architects 2012). Its high capacity and challenging location (over many railway lines) demonstrates the possibilities in Site C which has greater space availability. This bridge provides increased pedestrian permeability and comfort. The glass panels provide a transparent interface aiding wayfinding and feelings of safety.
‘High Line’ park, New York (USA)
The High Line park in New York (right) is a reclaimed raised railway line, converted to a park along which people can walk. The integration of historic railway infrastructure is interesting. This shows how the railway does not have to be a negative feature but could be integrated more closely with people in Site C. Additionally, this highlights the opportunities for wildlife and biodiversity alongside railway infrastructure.
Policy and Precedents
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Knight Architects (2012)
Hudson Yards (no date)
The High Line (no date)
Page 20
Precedent review (2)
Liziba Metro Station, Chongqing (China)
Waverley Arches, Edinburgh (UK)
Above shows a metro station at the 19th storey of a residential building in Chongqing, China. This challenges the preconception that buildings should be distinct from railway lines. Building over railway lines could be possible in Site C.
In contrast, the railway arch development in Edinburgh shows the opportunities of space beneath the railway lines. Here, various businesses have been located beneath a raised road, creating permeabledirect frontages, benefiting street life, social mix and economic activity.
Policy and
Precedents
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Criss (2017)
Senior Architectural Systems (no date)
Page 21
SWOT analysis
The below analysis identifies the key strengths, weaknesses, opportunities and threats based on the analysis of primary issues.
Analysis Overview
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Canal Car ownership Student population
Capital Quarter redevelopment
Large block size
Page 22
Urban crime
Design vision & objectives
Design vision
To create a well-connected, city centre location, providing reasons to visit for a wider range of people. The presence of railway lines will be embraced to create distinctive zones for greater place identity.
Design objectives
• The railway lines currently pose a challenging obstacle reducing connectivity
• There are limited crossing points over the railway lines
• The presence of large roads and car parking, along with railway lines, hinder walkability.
• There is a strong focus of land uses towards students and professionals.
• There are a limited number of public spaces and very few green spaces.
• Callaghan Square is under-used
• Railways, roads and car parking currently dominates the site
• Regional characteristics across the site provide identifiable features and character.
• Blank interfaces, and lack of surveillance are a current cause of crime concerns.
Strategic Design Framework
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1. Address site disconnection
2. Improve site walkability
3. Improve the area’s appeal to different social groups
5. Reduce the dominance of travel infrastructure
4. Provide more attractive and versatile public spaces
6. Retain character features of the area for a strong identity
7. Increase the area’s sociability as an anti-crime measure
Millennium of�ices 90s of�ices Millennium residential Hotel quarter Historic city centre Contemporary workspaces Modern shopping Industrial centres City suburb Small business central Large city blocks 050100 25 200m 1km 1km Character areas Within Site Bordering Site Elsewhere Of�ices built c. 1990-2000 with strong European, ‘capital city’ feel Area dominated by hotels, offering proximity to train station Modern of�ice buildings and student housing Warehouses, industrial and distribution units Mostly traditional semi-detached and terraced housing Characterised by mixture large-scale buildings with low permeability Low-rise late-20thC of�ices, showing signs of age Low-density car-dominated housing built c.1990 Shopping area characterised by historic buildings Shopping centre of contemporary design Houses converted to of�ices for small businesses Page 23
Provide more pedestrian and cycling routes across the railway lines (objectives
1 2 345 8
Locations for interventions
1, 2, 4)
To solve the problem of disconnection across the railway line, more pedestrian and cycle crossings are proposed across the railway, as shown on the map. One of the north-south bridges should provide high levels of capacity like the Stratford Town Centre Link (p.20).
Furthermore, a new ‘Metro’ station could be built at the centre of the site to increase connectivity. This location could capitalise on existing multistorey parking and the design could integrate the existing blue infrastructure.
Opportunity to integrate blue infrastructure in station design Could incorporate existing parking into integrated park and ride
Proposed new pedestrian crossing
Existing pedestrian crossing to be improved
Possible Metro station location
Possible location for a new Metro station, providing access across the railway line. Exitsing plans by Transport for Wales (inset) show that new stations are planned between Queen Street and Cardiff Bay.
Design Strategies Strategic Design Framework Page word count: 77 words Student number: 1731417 Shop Café
Page 24
Design Strategies
2
Increase variety of land uses, including places to eat (objective 3)
3
345 7 8
The land-use mix should be increased, providing places for people to visit, in particular cafés and restaurants. Currently these uses are concentrated in the City Centre (NW of site). In contrast to the Live/ Work/ Visit map, here some locations for potential food outlets have been identified.
Other ‘visit’ locations should be considered including shops, a community centre or public library, sports facilities and more public outdoor space.
Create a finer urban grain by providing walking links through large buildings, and reducing block sizes of new developments (objectives 1, 2)
45 8 9
Buildings such as the University of South Wales and the International Arena (pictured) are examples of such blocks and should be modified to allow the public to walk through these buildings for more direct access. In the case of the Arena, this site could be redeveloped to be made more permeable.
New developments should be built according to this principle of small block sizes.
Page word count: 150 words Student number: 1731417 Shop Café
Locations for potential food outlets Existing food outlets Current land uses (p.8) Potential food outlet locations
Page 25
Design Strategies
5
area distinctiveness
(objectives 3, 4, 6)
As identified through the analysis, the railway walls can be a negative feature to the site with regards to impermeable-opaque interfaces, and decreasing safety perceptions. Using spaces under the railway lines would be a way to reduce their intrusiveness, as demonstrated in Edinburgh. Rather than problematising the railways, this is a chance to embrace the opportunity they bring. Furthermore, this plan would also help to achieve design strategy 2; providing places for ‘visit’ locations.
9
Green infrastructure should also be improved along the railway lines as discussed on page 12. Santos y Ganges (2011) explains the benefits of cleaning up railway infrastructure, integrating green infrastructure and developing edges of the railway corridor, to minimise the railway’s intrusiveness.
Page word count: 116 words Student number: 1731417 Shop Café
4
Creatively use transport infrastructure including the railway line walls to increase green infrastructure, provide business opportunities, and create
Potential for conversion of Site C’s railway wall (above) into an active, commercial space as in Edinburgh (below) (Senior Architectural Systems, no date)
Potential location for creating business space beneath the railway lines (photograph location indicated ‘A’ on map)
A
Creation of business space under railway lines
Page 26
Design Strategies
Consolidate car parking to reduce its intrusiveness, and convert space back to people
(objectives 2, 4, 5, 7)
There is currently a high density of car parking across the site. To create a more walkable site and to provide space for new public spaces (such as parks or squares), car parking must be reduced. The below map identifies current surface-level parking which should be repurposed.
Existing car parks to be repurposed.
Site C boundary
Legend Buildings
Buildings with internal parking (e.g. multi-storey)
Surface-level car parks
Car parks to be repurposed
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Page 27
6
7 8
9 Improve connections to existing public spaces within and outside of the site (objectives 1,
2, 5)
Whilst new public spaces are desirable within the site, consideration should first be given to existing spaces; in particular how they are connected within the site. Improved walkability across the site by reducing the impact of roads and railway lines (strategies 1 & 5) will first help this. Additionally, signage should be provided to direct people to public spaces. Furthermore, a clearer hierarchy of public spaces will help users navigate to the most suitable public space for their needs. Currently, the similar sizes of public spaces in the site (with the exception of Callaghan Square) causes a lack of individual appeal in each case.
9
Reinvigorate under-used public spaces, and create new public spaces with a clear use vision (objective 5)
There is evidence through observational analysis that many of the public spaces in Site C are currently under-used. In particular, Callaghan Square (below) which lacks a sense of purpose and is mainly used for travelling through (p.1415). Giving such spaces a sense of purpose is needed. For example, combining the square with food vendors (as suggested in strategy 2) would give this space a purpose of a place to eat.
‘Reinvigorating’ spaces also requires the built design to be of high quality. As explained by Gehl et al. (2006), differing levels of enclosure are needed to encourage people to dwell in a place. Therefore, new public spaces should not be too open and exposed.
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Strategies
Design
Existing public space, to be improved Potential location for new public space Callaghan Square: revitalisation required Locations for new public spaces. These all currently involve car parking
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Existing public space hierarchy
Design Strategies
Create distinctive features of each ‘quadrant’ within the site, to improve legibility and place-making (objectives 1, 2, 6)
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The railway lines dividing the site create an opportunity to define each ‘quandrant’ (identified on the map, left) with its key character (analysed right). Creating a level of distinctiveness in terms of design language within each area will help users of the site orient themselves.
Materiality, block size and form, and land uses, are key factors which can help provide distinctiveness to each part of the site. For example, the south east corner (green, left) is characterised by offices and student accomodation. This should be distinguishable from the blue zone which has more of a leisure focus. The built form and design should reflect these characters.
Eradicate walking routes with no visual surveillance, and improve street lighting and navigation for night-time activity (objectives 2, 7)
Biddulph (2007) identifies the lack of safety caused by routes without visual surveillance, and Wood & Dovey (2015) explain the lack of street vitality caused by opaque and impermeable interfaces. Many such places exist in site C as shown right. Street lighting should be installed in areas which have a lack of surveillance, as has been shown to be successful in Callaghan Square (p. 16).
Places with no visual surveillance should be redesigned. In the case of the walkway (far right), the creation of railway arches will help convert this interface into active-transparent.
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Millennium 90s of�ices Millennium Hotel Historic Contemporary Modern Industrial City Small Large 050100 25 200m 1km x 1km Character Of�ices built c. European, ‘capital Area dominated train station Modern of�ice Warehouses, industrial Mostly traditional housing Characterised buildings with Low-rise late-20thC Low-density car-dominated Shopping area Shopping centre Houses converted
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This portfolio has assessed the design characteristics, strengths and weaknesses of Site C, as well as suggesting design objectives and strategies.
This project takes on a different approach to the railway lines that dominate the site. Rather than problematising and shielding these lines, the strategies aim to make use of the distinctive features of railway infrastructure. For example, the railway lines will be built underneath to create business spaces (strategy 4), and the spaces created by the lines will help inform area characteristics (strategy 8).
It is believed that these proposals will help to acheive a ‘well-connected, city centre location, with reasons to visit’ - as set out in the design vision.
References
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Strategic Design Framework Conclusions
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