Unanticipated water, rock, or differing soil types can throw budgets and timelines into disarray. Differing Site Condition (DSC ... of Architects (AIA). Type 1 and Type 2 Conditions in DSC ...

Turning to the contractor's Type 1 differing site condition claim, the Board agreed with the contractor that the statement in the plans to "assume" the piles would be coated with creosote ...