community catalyst by Sebastian Kron

Catalysts gen-

erally react with one or more reactants to form an intermediate that sub-

sequently

the

final

give

reaction

p r o d u c t 1

__AREA _ OF FOCUS/ KHAYELITSHA

__TYPICAL SCHOOL BUILDING

__USAZASO SCHOOL

__AREA _ OF FOCUS/ SITE 3

URBAN/ISSUES *High rate of social problems, including unemployment, poverty, crime, poor health, pollution, inadequate social facilities *Poor public interface; boundaries â&#x20AC;˘Lack of urban integration: poor relationship of schools with street, neighbouring schools and surrounding built fabric; *Lack of shade and vegetation *Inadequate infrastructure: street lighting, street furniture *Problematic alleys between schools *Access and transportation not integrated *Poor service provision: electricity, sewerage, water, storm water drainage ARCHITECTURAL/ISSUES *Poor maintenance and management of school buildings and resources *Shortage of variety of facilities: lack of sports facilities, school halls, tuck shops/school kitchens, etc *Facilities not ideal for teaching new curriculum subjects such as science and computer science *The way school buildings were situated on their sites results in a large amount of unoccupied open space. *Thermal performance of buildings adequate, but could be improved *Aesthetics and program of schools reminiscent of Apartheid planning *Contrast between very dense residential and unused open spaces surrounding schools *Entrances through vehicular access points; do not correspond to the need of the pedestrian building users *Lack of vegetation and grass

__CLA

__UNDERUTI

__TYPICAL S

__MAIN ENTRANCE

ASS ROOM BLOCKS

TILISED OPEN SPACE

SCHOOL SITE

__TYPICAL SCHOOL BUILDING 7

MAIN STATION

Concept

The space between the five schools is a wasised and polluted space. I want to improve this space, which is the main connection between the community and the closest main station. The results of these improvements benefit both the school and the community, this is a reaction to the catalysis. A better relationship between the school and community brings more activity into the public space which brings more safety and is hopefully a starting point for a new urban development.

SECURITY PUBLIC TELEPHONE GATE

SPORTCOURT/ EVENT STAGE

CAFE/ SCHOOL TUCKS SHOP

CANOPY

The catalysis itself includes a small public sports fi eld with seating, a cafĂŠ combine with a tuckshop, some public telephones, a security access point and a gate. There is also the possibility of further expansion of the sports fi elds on the schoolâ&#x20AC;&#x2122;s side. Sporting events would be a great chance for the school and the community to make more contact and create more interaction. The tuckshop could be run by the school and is a great chance for learner to get professional experience and for the school to earn more money. The public sports fi elds will bring more activity to the space with means more safety and a great chance for the tuckshop to sell its goods.

siteplan

MORE SAFETY

SEATING AREA

TREE

MORE SAFETY

TREES

MORE URBAN

STREETLIGHTS CATALYST = STREETLIGHT

MORE SAFETY

ACTIVITY

PLAYGROUND

COMMUNITYCATALYST

ACTIVITY

GATE

SHACK

MORE SAFETY

SEATING AREA CATALYST = SEATING AREA 13

topview

GATE

SECURITY

PUBLIC TELEPHONE INTERNET

CAFE / TUCKSHOP

SPORTCOURT/ EVENTSTAG

STANDS

S: 1:200

S: 1:100

FENCE

10 m

TREETLIGHT

generic catalyst programme (GCP) SECTIONS

COMMUNITY

site

TUCKSHOP/CAFE COMMUNITYROOM SPORTFACILITIES PRINTSERVICE PUBLICTELEPHON SECURITY HELTHFACILITIES GATE LIBRARY INTERNETACCESS

Generic catalyst program

SCHOOL

The gcp is an analytical tool which takes different needs to schematically generate a building which can act as a catalyst for a urban improvement. Depending on the site and the needs, the tool will generate a different shape for the building.

generic programme

school 1

school 3

wastet space

school 2

school 1

community catalyst sportcourt

gcp

school 1 school 1

wastet space

school 2

community catalyst small urban places sportcourt

moving wall & shelf system wall

scenari

* regular

shelf

Moving wall and shelf system

* closing time

outside

* event

Being flexible is a major requirements for the “catalyst”. To achieve this flexablitz in the best possible way, the structure of the catalyst includes a track system which makes it possible to change the position of the walls and most of the furniture without changing the structure itself. This allows the user to react to different requirements with a minimum effort and a maximum impact. The track system is integrated into the frames while using the gapes between the 3 layers of OSB. It’s made out of simple steel channel rails. The rails are perforated in the vertical part to hang the wall shelves to the structure. On the ceiling the tracks can be also used to install lightning. In order to cut cost OSB was also used for the furniture. The shelves which are standing on the floor as well as the counter have a detail on their bottom side which allows them to slide along on horizontal tracks. Through this it becomes possible to move the counter next to the open façade and provide their service to the outside with out

using the inside space. A scenario which can be used for a bigger event, as shown in the schematic sections.

facade The faรงade

SECURIT LAYER

The faรงade is made of two layers, the first layer of perforated metal screens can be closed to protect the catalyst, and one glass layer which can be partially open. The design of the metal screens can be change from site to site, the community can also express their own suggestions for the design.

TRANSPAREN LAYER

LIG HT

DESIGN STUDYS SECURITY LAYER

SECURITY LAYER

CRI ME

upgrade 2.0 The solar panel In a later upgrade of the catalyst it is possible to change some of the metal cladding panels to solar panels. These panels are made of 3 layers the first is a Perspex layer as protection for the thin film solar cells which comprise the second layer. The third layer is a solar thermal collector to produce hot water. With these upgrades the catalyst becomes independent from a public energy system, which makes the whole project even more generic.

Energy Panels

Pre fab unit 1

The pre fab unit 1 is the outside metal skin of the catalyst. It includes OSB board (2) which fits between the frames and is also part of the structure, the metal cladding panels (1) and the aluminium tracks (3) which connect the metal sheeting with the OSB board as well as the structure. The track system is an interlocking system, which makes for an easy assembly of the structure.

2 1

prefab unit 1

prefab unit 2 1

2 Pre fab unit 3 Unit 3 is constructed from off cut OSB left over from the framing process. The boards are sanded and sealed on the exposed face, the rounded corners are a special detail part.

Pre-fab-system

2 3

The basic idea of a generic community catalyst is that the entire structure is easy to repeat or to extend. It must also be adaptable, because of the rapid changing urban context it must also be easily to be removed. This needs a sustainable development of the whole system, an optimization of the materials as well as the manufacturing process. In terms of the material, the decision to use predominantly OSB, was based on it is a renewable properties. Assembly of the building should be arranged so that each piece can easily be modified to accommodate urban change and its possible influence on the structure. This means excluding difficult to recycle composite materials and requires a system which is optimizes in the manufacturing process. Another important focus is the integration of the community. Itâ&#x20AC;&#x2122;s one of the main aims of the catalyst to improve the interaction between the community and school and also to improve the general urban fabric surrounding of the school. To achieve this the design was developed as a pre fabricated system which allows a final assembly of the â&#x20AC;&#x2DC;catalystâ&#x20AC;&#x2122; to be built together with the community.

prefab unit 2 Prefab - unit 2 The 2nd unit includes the correspondent of the connection track (1) of unit 1, which is prefabricated and fixed with screws on the frames (2). The inside gapes of the three layers of the frame contain a track system (3) for the moving wall and shelf system. The vertical rails are perforated for the adjustable shelves on the wall. This system warranted a maximum flexibility for the inside space.

2 25

1.25

1.77

7. 72

1.44 L

1.25

7.32 J

2.32

3 4.8

1.2

2 2.3

1.25

3 E

C B

0 3.8

strucural-grid

8.64

3 3.6

Detail: CONNECTION FRAMES TIE ROD

Detail: CROSS-CONNECTION

Detail: CONNECTEION CORNER TIE ROD

6.25

1.25 O

1.35

1 3

4.08

2 4

1.25 7.50

TEST OSB

productionline

testline

24 KN

structural-details 1 CONNECTION LAYERS 35mm GALVANIZED MILD STEEL TIE ROD

24 mm OSB SPACER M 20 BOLT

24 mm OSB LAYER

CONNECTION FRAME

S - TIE ROD

CROSS-CONNECTION

125/100 x 150 x 7 mm GALVANIZED MILD STEEL ANGLE

S: 1 : 5

structural-details 2 EXTENTION DETAIL

CONNECTEION CORNER-TIE ROD

S: 1 : 5 33

structural-details 3 Connection Structur - Foundation

200/125 x 175 x 7 mm GALVANIZED MILD STEEL SHOE

Concret Fundation 50 cm x 60 cm

S: 1 : 5

7.32

2.32

3 4.8

3 2.3

5 1.2

Public telephon/ Internet

tuck

security

0 3.8

plan catalyst

Section A-A

3 3.6

school

1.25

Security layer

Glas layer

sportsco urt/ stage

kshop/cafe

8.64

7,46

1,25

1,21

3,36

Detail A1

tuckshop/cafe

Section b-b

Public te internet

1,5% Slope

3,80

Detail A3

Section A-A security

2,83

1,25

Section A-A C

Section B-B

security

3,76

elephon/ t

Detail A2

frame with tracks 3

Detail A 1 1

Vertikal tracks inside pervorated for the shelf system. connected to prefab OSB structure.

Horizontal tracks inside for the moving wall and shelfsystem connected to pre-fab OSB structure

Interlocking aluminium track system rivited to secure metal cladding. Lower track connected to pre-fab OSB structure. Track on the top connected to the pre fab OSB-Metalcladding unit.

24 mm OSB

5 24 mm OSB with transparent seal and sanded on exposed face only

6 100 mm thermal insulation 7

1mm x 85 cm x 113 cm zinc sheeting panels

facade-details

Detail A 2

S: 1:2 1

4 7

Detail A 3

S: 1:5 10

Sliding 28 mm double glassing door panel

Galvinized Metal Stair Treads Treads : 2,5 cm x 0,5 cm ; Gratingspace 40cm x 113 cm

Sub-Structure Aluminium rails to attach metal cladding

2 Tracks for sliding glass panels 3

Security layer, Sliding folding metal screens double layered 1 mm pervorated zinc metal sheeds 62,5 x 370 cm

Edge 1 mm zinc sheeting

5 24 mm OSB

10 Edge 1 mm zinc sheeting bended 11 1mm x 85 cm x 113 cm zinc sheeting panels

6 24 mm OSB with transparent seal and sanded on exposed face only

100 mm thermal insulation 43

6.37 1.25 1.25

2.35

Galvinized Metal Stair Treads Treads : 2,5 cm x 0,5 cm ; Gratingspace 40cm x 113 cm

Zinc Metal Sheeting 1mm

OSB 24 mm

Tie Rod 35 mm

Self Levelling Coating 25 mm

1 4.12

2 3 4

STANDS

7.62

S : 1: 100

S : 1: 20

2 1.36

2.09

1 5

2.74

u c

f f

h t

Cut pattern

3 1 4

In order to cut the cost and increase sustainability you need a system which optimizes the process of cutting the frames out of the OSB boards. The approach is to produce the least amount of off cut possible. This was one of the main reasons to use OSB for more than only the structure. The prototype is using 2.5 x 5 m boards which are off sized boards but still easy to get, especially if ordered in a bigger amount. The boards are although to small for the frames of 3,8 x 3,8 m but its no problem to extend the frames as shown in the structural details. The space between the frames is used for the flooring and ceiling peaces (3), extension (4) parts of the frames, the spacers to connect the layers later (2), or parts of the horizontal beams. As the design continues it would be helpful to develop a programming script for an existing 3D program in order to generate a detailed and efficient cutting pattern.

budget Site clearance

263,00

Sundries

2.500,00

ill

SUPERSTRUCTURE Structural Frame

Structural Steel Rod Suspended floors Extra over for stairs

95.260,00

6.880,00 4.617,00 1646,25

External Envelope Glass Structural Insulation

4568,40

56,515,99 1.827,36

Roof

18.332,60

Roof structure

2.000,00

Rainwater goods

Internal divisions 8772,30

Floor finishes

Internal wall finishes

1086,75

Ceilings

4155,30

Fittings

31.707,50

SERVICES . . . . .

. . . . .

d u l xc

d n u fo

public viewing 570.000 Total

on i t a

community CAtalyst

community catalyst

logbook

Community Catalyst CEM Lesego Mosime Jinhao Shen Louis Maritz Daniel Payaneeandee BAS(hons) Charl Testa Sebastian Kron Heike Toussaint

RAPID DEPLOYMENT STUDIO

a joint initiative by CEM and BAS(Hons) students University of Cape Town August 2008

N-L

IFE

RAPID DEPLOYMENT OF FACILITIES FOR UNDERDEVELOPED SCHOOLS

MAIN STATION

ACTIVATING

CAFE TUCKSHOP PUBLIC TELEPHONE

PUBLIC

MORE URBAN ACTIVITY

SEATING AREA

PUBLIC

SECURITY

SCHOOL

MORE SAFETY

PLAYGROUND

TREE

MORE URBAN ACTIVITY

SCHOOL

CATALYST

COMMUNITYCATALYST

GATE

SHACK

MORE SAFETY

tio

OSB (ORIENTED STRAIN BOARD)

og re ? 15. october ss ?

Group proposal The group proposal was the first step of the project. We had to analyse the needs of under-resourced schools to find out what their needs are. KHAYELITSHA was chosen as area for our research. Our particular site is one with 5 schools in a row. Only one of these is a high school, the rest are primary schools. The 4 primary schools are old Apartheid schools and all almost identical in terms of design. The high school has only recently been built and is unique its design. We spoke to the principal of one of the primary schools who gave us some useful information. We saw the main problem in the urban scale rather than within the school themselves. The result of our research was that we wanted to improve the boundaries of the school, as this is the connection point from the school to the community. The basic idea is that if it is possible to fix the problems in the surroundings of the schools, it is simultaneously possible to fix a lot of the problems of the school in the same moment. The design proposal The design proposal was the first individual part of the project. I decided to continue the work of our group in terms of urban scale. To test my ideas I also chose the site with the 5 schools in a row. More specifically I chose the space between the last two schools and I focused on in improving this space, and using my catalyst building as a tool for this process. I tried to see the building more as a temporary architecture which can react to an urban scale changing in the next years. The 2nd quarter detailing Making the building work was maybe the most difficult part. The crux was to find a structure which would be cheap, easy to replicate, sustainable and which was suitable for the curvy shape. The first idea was to use normal timber, but connection points turned out too difficult and the prefabrication process seemed too complex for a generic project. So I chose OSB boards as material for the structure. To have a proof that the material could resist the forces I had to do a test with a part of one of my beams. The material passed the test and I could continue detailing. Work with the QS The co-operation with the QS students was sometimes difficult because they expected early results, which I could not give to them in the beginning because the design changed too often. In the end when I could give them the final design information they had stress with their other subjects. Bad timing. But altogether it was an interesting experience for me, especially as an exchange student. 53

the community catalyst as part of the repaid devolpment studio project lecturer francis carter university of cape town student sebastian kron university of stuttgart/university of cape town 2008