Page 168 - BASIC GUIDELINE FOR QS

Professional Practice: Guideline for Quantity Surveyor Chapter 5

5.8.13 Provisional Sum

Provisonal sum is a sum of money included the contract for work:
 By a statutory authority

 Work that cannot be fully defined at time of the tender
 Work that it is not sure whether it is required

There are two (2) types of provisonal sum :
 Defined provisional sum
 Undefined provisional sum

Defined Provisional Sum

A sum included in the contract for work that has not been completely designed at time of
the tender but for which certain specified information can be given.
Made proper allowance for carrying out the work in their programme and

preliminaries. This means thet they are not entitled to an Extension of Time (EOT) or
extra preliminaries for carrying out the works, whatever the delay or cost doing so to the

contractor.

Undefined Provisional Sum
A sum included for workfor which there is minimal or no information at time of the tender.

The contractor is deemed to have allowed for anything. Made proper allowance in
programme or preliminaries for carrying out the works.

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