This video explains and interprets GC 13.10, which was written to clarify that time extensions which are due to a change in the scope of work are not delays and thus not subject to the provisions of GC 13.
This video discusses and provides examples of how putting specs on drawings can cause problems during a project, particularly when the drawings rank lower in the Document Hierarchy (GC 2.2.4.).
This video defines (GC 1.48) and provides examples of Optional Work, and explains the related General Conditions: GC 7.4.1, GC 9.4.2, and GC 9.5.3.
A core philosophy supporting the MMCD is that risk should be apportioned based on who can best manage it. Also, we do not want bidders to have to include large contingency amounts for unknown risks on every tender. So how do we put these objectives into effect concerning hazardous materials? Find out in this 9-minute presentation by Brian Weeks.
Note that the Contract Administrator is the interpreter of the Contract Documents, and the judge both parties to the Contract (GC 3.6.1). Refer to General Conditions regarding Extra Work and Change Orders.
Refer to GC 1..3.8
GC 13.3 Unavoidable delay cites Abnormal Weather as something beyond the reasonable control of the Contractor.
Situation may require legal advice...but check the GCs for sections relevant to the alleged breach.