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Extension of car park 6 south

The extension to car park 6 is being built as a replacement for car park 5.

Extension P6 south

The project involves extending car park 6 to the south by adding a total of four rows of parking spaces (Comfort Class B) on all floors, providing some 1,300 parking spaces. The current entrance will remain the same. Inside, the extension will be connected to the existing circular ramp. A new exit bridge will be built to the south.

Structurally, the extension takes the form of a composite steelwork/concrete assembly which, while continuing the column grid, is physically independent of the present building. The facade will be clad with aluminium panels.

There will be four additional emergency exit staircases and four new lifts. Smoke exhaust systems will be installed to remove smoke from the internal stairs.
The scheme necessitates the installation of additional ventilation/smoke exhaust systems plus sprinklers on the basement levels.


Converted space (SIA 416): 147,716 m³
Construction start: February 2011
New-build area: 45,509 m²
Operational start: - Phase 1: August 2013 (8 floors)
- Phase 2/completion: July 2014
Length x width: 101m x 35m
Parking spaces: New 1,300 / total 4,016
Number of floors: 12

Involved Parties

Lead designer + engineer: Dr. Deuring + Oehninger AG, Winterthur
Architect: Stutz + Bolt + Partner Architekten AG, Winterthur
Building services: O. Spalinger, plumbing design, Baden
Medinstplan AG, heating, ventilation, air conditioning and plumbing, Nussbaumen
A-Projekt AG, electrical design, Adetswil
AFC Air Flow Consulting AG, fire safety design, Zürich
Enz & Partner GmbH, traffic planner, Zürich