Can the Contractor make adjustments to the scope or quantities of work to be done?

Yes. Adjustments in working drawings to suit field conditions which cannot be foreseen at the time of calling for bids, may be necessary during construction. It is the essence of the Contract to recognize such changes in Drawings as normal. The resulting change in quantities or the increase in the scope of work of the Contractor shall be covered by a Change Order.

 

However, work done by the Contractor without timely notice to the Owner that an adjustment is required of Contract Price and Completion Time shall be at his own risk and expense.