The Contractor's primary obligation is to Provide the Works in accordance with the Works Information (clause 20.1), not in accordance with the Price List. What comprises the Works Information is defined at clause 11.2(13) "... is either in the document called Works Information or in an instruction ...". Therefore by definition information in the Price List is not Works Information and should not be used by the Contractor to tell him what to do. The function of the Price List is purely for payment purposes, it doesn't specify standards, materials or working methods.
The Works Information should have contained the names of the proprietary bedding, grout and primer, this information should have been on the drawings.
The Contractor still has to demonstrate the Defined Cost that he's incurred as a result of the compensation event though (clause 63.2) so you should only have to pay the extra over cost and not the full cost.
The Works Information should have contained the names of the proprietary bedding, grout and primer, this information should have been on the drawings.
The Contractor still has to demonstrate the Defined Cost that he's incurred as a result of the compensation event though (clause 63.2) so you should only have to pay the extra over cost and not the full cost.