I am currently working a on a project where the Client provided indicative design including pile layouts and ground beam design. A ground investigation report was provided but however seems to be vastly different from what is on site. Some of the piles are very shallow to the point that they need to be removed and replaced by shallow trenchfill- in cases only 300-600mm deep. The site was in the process of being piled when the piler stopped- the Clients engineer while on a site visit verbally instructed him to continue.
There was also an under laying reinforced concrete yard which was covered over on this brown field site again this did not appear on any of the contract data or site investigation.
The form of contract is NEC 3 Option A.
Do I have any grounds for claiming;
1- For the piling which now largely need to be removed.
2 -The underground obstructions encounted.
3 -for the trenchfill that will now need to be provided.
Any advice would be greatly appreciated.
Thanks in advance.