IN
DEGREE PROJECT ARCHITECTURE, FIRST CYCLE, 15 CREDITS
STOCKHOLM SWEDEN 2020,
Tensta City Hall
a link between the public and its closed
administration
HANNA BERGSTRÖM
KTH ROYAL INSTITUTE OF TECHNOLOGY
SCHOOL OF ARCHITECTURE AND THE BUILT ENVIRONMENT
Tensta City Hall
M
M
H J U L S T A
J Ä R V A
F Ä L T E T
K I S T A
h i g h s c h o o l
& s p o r t s h a l l
E 1 8
B R O M S T E N
M
S P Å N G A T
R I N K E B Y
T E N S T A
s p o r t s s t a d i u m
i n d u s t r y
A city hall is a building for the people, a building where the inhabitants’
administration takes place but also where they are encouraged to take part in public space and give it their form. A city hall is a room for social interac- tions as well as architecture’s interaction with local democracy.
Tensta was built in the late 1960s, an area characterized by quickly built concrete slabs which would allow housing for all. Furthermore, the city plan relinquishes the traditional grid city. It faces inward towards its centrum and metro station with a plan based on traffic separation. The defined level dif- ferences that come with traffic separation are interesting to the project, and the city hall became a way to break up the determined levels. The building connects Tensta’s walk to a submerged, somewhat forgotten square, and be- comes a link through Tensta. An extension of the public spaces, as a living room to the district.
The site is versatile with many cultural influences which make it appealing to the project of creating a city hall – a public room to anyone. Although there is a lot of movement, people do not seem to leave or come to Tensta, the hub is rather around the vegetable market and the purchase of groceries.
People carry plastic bags filled to the brim, no one seems to go empty-hand- ed.
The program of the city hall is an interaction between open and closed in its way to interact with people and conduct business. The public encounters enclosed departments and walls of secrecy, which become characterizing to the architectural design. Closed rooms to open halls, and durable concrete construction to bare wood tones and agile glass panes.
park
S
health center
forest
market
järvafält
et
shopping mall youth center
student accommodation
park
art gallery
spånga
privat semi-public
public
site plan
understanding the program and creating a building
accordingly creating spatial qualities and a functioning building understanding the technical structure and developing
the building thenceforth
process
tenstagången towards west tenstagången towards southeast
northeast facade
southeast facade southwest facade
northwest facade
tenstagången
taxingeplan
taxingegränd
tenstastråket
art gallery
subway
kämpingegången
A
A
B B
mosque
market
hair dresser
The building is divided into four squares out of the plan, two closed volumes and two open spaces that cross each other diagonally. The circulation area is at the core of the diago- nals with a staircase and public balconies that reaches to the closed volumes.
The lower floor has the characteristics of a public square. It has a more open and flexi- ble distinction than the overlying floors which have more closed departments with specific programs. The floor is characterized by a hall with a generous staircase, triple floor height, and flexibility for various forms of events.
There is a restaurant, café, kitchen, parking with goods reception, and storage rooms.
The hall is directed towards Taxingeplan and Tensta’s art gallery, while the restaurant with its outdoor dining area views out onto Tensta Street, the street that leads south to Spånga and north to E18 and the greenery, Järvafältet.
The floor level is independent of the remain- ing floor, therefore it can be kept open when the rest of the building is closed.
The next floor adjoins to Tenstagången and the metro entrance. Here is the main entrance, foyer, reception, a public office, a common meeting room as well as a more closed depart- ment for management and staff. On the next level is the Individual & Family Department and the Preschool & Leisure Department. At the top level is the Financial Aid Department and the Department for the Elderly & Dis- abled. The departments have open offices but several different types of rooms for meetings, group work, and consulting rooms. For larg- er meetings, the common meeting room on floor 1 can be used. In addition to large glass sections of the facade, the sunlight reaches the offices through two glazed atriums.
The building has six terraces of different siz- es and characters, the two largest are large enough for planting. The plants can be used by the restaurant or sold at the market. Five of the terraces are public and open when the building is. The terraces are a way to give back the area that the closed departments hold, furthermore they reduce the building’s wall character and bring more sunlight down to- wards the Tenstagången.
street level
shafts and ventilation privat
public
0 1 2 3
A
A
B B
A
A
B B
A
A
B B
A
A
B B
ground floor – entrance floor
parking storage
kithcen
entrance for kitchen
staff
restaurant cafe
hall
goods reception technique
foyer jour
jour
reception meeting room
janitor
common office
staff
shower rest
HR management
outdoor dining
terrace
department of financial assistance department of
elderly & disabled
terrace department of
family & individual
terrace department of
preschool & leisure
terrace terrace
terrace
first floor – entrance floor
second floor third floor
section AA
section BB
office on the second floor visitors entering from taxingegränd
The building is made of prefabricated concrete to harmo- nize with the area’s concrete apartment slabs and the 60’s idea of building with modules. The house stands on a site- cast concrete slab and the frame is characterized by a pillar system, based on a 4000x4000 grid. Along the grid, concrete pillars create a structure within the flexible space. The con- crete pillars are 400x400 within the closed volumes while rectangular pillars of 400x2000 are prominent in the open halls. The building is supported by concrete shafts for el- evator, toilets, evacuation, and ventilation. The concrete is complemented by solid wood walls, both load-bearing, and non-bearing. The wood opposes the hard concrete with a softer tone. With an increased amount of wood, the amount of concrete is reduced and the building performs better from an environmental perspective.
The grid’s dimensions are determined due to construction- al reasons, but also to suit different types of rooms within the offices. The concrete framework is durable, however, the solid wood interior walls and interior glass sections can be moved when the program of the building is changing. The building has the potential to be more closed as well as more open, and the potential for change enables it to withstand a longer period.
Solar panels on the roof supply the building with electricity, and plantings on the terraces as well as green roofs contribute to the city’s greenery. The vegetation strengthens the green infrastructure which generates a path for plants and insects between the parks in Tensta and the surrounding green area, such as Järvafärltet to the north and parks to the south.
paving flags fine gravel
soil
drainage strip footing 2x150 thermal insulation 150 thermal insulation
gravel – draining, capillary breaking layer drainage
15 flooring cement 250 concrete slab
200 concrete beam 10 drainage mat
300 cellular glass 250 concrete slab
75 concrete 200 mineral wool 80 sedum layer
150 concrete drainage
sealing layer
15 plaster
15 mm stone flags
200 porous boards
250 site-cast concrete drainage channel natural stone
expanding sealing tape sash frame frame triple glazed window
sash frame frame seal with expanding sealing tape sill
orientation plan
technical section
construction model
TRITA -ABE-MBT-20223
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