268. Exercise of a power to extend time.

The time when and the conditions under which the architect or engineer should exercise his jurisdiction to extend the date for completion will depend upon the terms of the contract. Standard forms of contract1 require the contractor to make a written application for the grant of an extension of time2. Occasionally a contract may still provide that an extension of time must be granted before completion so that a later exercise of the power is invalid and liquidated damages are irrecoverable3. Where an extension is for the contractor's benefit it seems that the power can be exercised retrospectively4. If,