Hi all,
I cannot comprehend the meaning of Provisional Quantities & PROVISIONAL SUM. Please explain it to me and also describe the difference in simple English. Many thanks in advance.
A provisional sum is an allowance, usually estimated by the cost consultant, that is inserted into tender documents for a specific element of the works that is not yet defined in enough detail for tenderers to price. This, together with a brief description, allows tenderers to apply mark up and attendance costs within their overall tender price and make allowance for the work in the contract programme.
Same for provisional quantities. It means that you just have a rough estimate for the real quantities you'll need.
Provisional sum is a price fixed for Supply and installation any particular system Such as Security system, Telephone & Data, Av system etc.. The Bidder can include the their over head and profit for the same. Whereas provisional quantity is always re-measurable after installation and the unit price will be adjusted as per the installed quantity.
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