Extension of time under JCT standard form contracts - Building Contract Claims - page 187

At any time up to 12 weeks after the date of Practical Completion, the Architect
may make an extension of time in accordance with the provisions of this
clause 2.3, whether upon reviewing a previous decision or otherwise and
whether or not the Contractor has given notice as referred to in the first
paragraph hereof. Such an extension of time shall not reduce any previously
made.
Provided always that the Contractor shall use constantly his best endeavours to
prevent delay and shall do all that may be reasonably required to the satisfaction of
the Architect to proceed with the Works.
The Contractor shall provide such information required by the Architect as is
reasonably necessary for the purposes of clause 2.3.

Events referred to in clause 2.3

2.4 The following are the events referred to in clause 2.3:

2.4.1 force majeure;

2.4.2 exceptionally adverse weather conditions;

2.4.3 loss or damage caused by any one or more of the Specified Perils;

2.4.4 civil commotion, local combination of workmen, strike or lock-out affecting

any of the trades employed upon the Works or any trade engaged in the
preparation, manufacture or transportation of any of the goods or materials
required for the Works;

2.4.5 compliance with the Architect's instructions under clauses

1.4 (inconsistencies) ,or

3.6 (Variations) ,or

3.8 (Provisional sums)

except, where the Contract Documents include bills of quantities, for
the expenditure of a provisional sum for defined work included in
such bills, or

3.15 (Postponement) ,

or, to the extent provided therein, under clause

3.3 (Named sub-contractors);

2.4.6 compliance with the Architect's instructions requiring the opening up or

the testing of any of the work, materials or goods in accordance with clauses
3.12 or 3.13.1 (including making good in consequence of such opening up or
testing), unless the inspection or test showed that the work, materials or
goods were not in accordance with this Contract;

2.4.7 .1 where an Information Release Schedule has been provided, failure of

the Architect to comply with clause 1.7.1;

2.4.7 .2 failure of the Architect to comply with clause 1.7.2;

2.4.8 the execution of work not forming part of this Contract by the Employer

himself or by persons employed or otherwise engaged by the Employer as
referred to in clause 3.11 or the failure to execute such work;

2.4.9 the supply by the Employer of materials and goods which the Employer has

agreed to supply for the Works or the failure so to supply;