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A provisional sum as described in the Domestic Building Contract Act is an estimate of the cost of carrying out particular work. The estimate includes the cost of supplying any materials needed for the work. An estimate is required if, after making all reasonable enquiries, the builder cannot give a definite amount for the item at the time the contract is entered into.
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
The Provisional Sum can be defined as an allowance or cost or prices that usually estimated by the cost consultant or consultancy firm then it is integrated into tender documents for a specific task or element of the project or the work scope requested in which it is not yet defined in enough detail for tenderers.
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I am not a civil engineer, but I would try me best.
Probably 1: The provisional sum relates to the construction of the structure with no existing design drawings, say for example building A, roads, and parking, etc.
Solution: you can have a WBS showing this structures at the same time allow for one line activity describing the structure. This is important because you have to capture the duration of its provisional sum relating to the construction of each structure to give a clear picture of what the construction duration might be.
A provisional sum is an estimate of the cost of completing a particular job. A provisional sum includes the cost of supplying any materials needed for work.
Is an approximation amount of a work' cost you ask for at twoo contractors minimum to have an approach. The scope of works is close but not exactly, as well as the amount. However the total amount is the summatory of all costs.
provisioal sum is the amount of money initially agreed upon between the contracting parties to work to be performed, in cases where the full extent or nature of the work is not yet known. Determine the amount of temporary work permits to move forward with the expectation that the amount may be modified in the course of action as more information about the scope of work with becomes available.
Generally provisional sum is an amount allocated for a specialized work by a specialized firm, for which the details are not available at the time of tender. The provisional sum amount will be a best guess at the time of tender by the employer or contractor depending upon the type of provisional sum. Hence claim made by the contractor need not necessarily be the exact amount mentioned in the contract.
It is an allowance / estimate considered for some jobs for which complete details are not available at the time of tender.
there are two types:
defined - Contractor will estimate for the additional works etc.
undefined - Client will take the risk on the cost and time for that additional job to complete.
There is no single agreed definition of the term “provisional sum”. In general, it refers to a price for work that may not be required, or whose scope is undefined. In either case, the parties do not try to price it accurately and simply include a provisional sum as their “best guess”.
