ABSTRACT
Design for the scheme commenced in 1995 and at an early stage (1999), compensation grouting was identified as a suitable solution to mitigate the settlements. As the use of compensation grouting in association with wooden piled foundations was not known, the project carried out a full scale trial (van der Stoel et al, 2002 and Hasnoot et al, 1999). Model foundations were constructed at a location along the line of the Sophia tunnel and compensation grouting during TBM passage was successfully carried out. This trial gave confidence to the use of this technique in Amsterdam and it then formed part of the contract requirements.
