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Other Technology

 
  Creation of Basement Levels Under Existing Buildings    
         
  A problem common to occupants of historic buildings in congested city centers, particularly in Europe, is that relatively few of these structures were created with basement levels or underground parking. Clients needing to expand their facilities face the modern realities of lack of suitable, economical, development opportunities.
 
         
  The solution for many of these clients is to expand their existing structure downward, through the creation of subterranean levels which can be used for offices, storage, vaults or parking.  
         
  QUAI WILSON-GENEVE
Quai Wilson Bank in Geneve
Subterranean Level
Expansion of existing structures
basement levels
Institute for the Blind, Lausanne
 
         
  Forasol has the ability to overcome key engineering challenges in such projects, such as:
 
         
  1) the need to transfer the charge of the building off its existing foundation and onto temporary structures, such as micro-pilings, to permit the demolition of the existing foundation and the resulting subterranean construction
 
         
  2) the need to protect the existing and new basement structures from lateral forces (such as the
existence of nearby structures or bodies of water)
 
         
  3) the need to conserve, particularly historically classified buildings, in their original state (façades, ceiling heights, etc.)
 
         
  4) the need to eliminate the risk of damage to adjacent structures  
         
         
  Forasol has both the engineering experience and, thanks to its technical staff, the machines necessary to implement solutions such as the reference below:
 
         
  HSBC Republic Bank Building, 37 Quai Wilson, Geneva Switzerland, 1998
 
         
  Owner:

HSBC Republic National Bank of New York (Suisse) SA

 
  Architect:
Bernard Erbeia
 
  Engineer:
Karakas & Français, SA
 
  Association:
Astié & Fils SA - Losinger Constructions SA - Forasol SA
 
  Type of Work:
Diagraph wall casting 2,500 m2, 0.6m thickness, 25m depth
operating within limited ceiling height of 2.8m
140 micropilings at 220mm with steel tube reinforcements of 168mm, 10mm thickness, 500-700kN

 
  Soil:
Silty sands, gravel, below the groundwater level
 
  Special Conditions:
Lake Geneva less than 40m away, adjacent buildings on 2 sides
 
         
  See photos below for an illustration of this construction project
 
         
  QUAI WILSON-GENEVE
Construction begins, Quai Wilson
QUAI WILSON-GENEVE
HSBC Republic Bank, 2004
basement level
Quai Wilson, basement levels
 
         
   
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