The bill of quantities which is prepared by the amount surveyor is made principally as a tendering doc. Every single contractor tendering for the project is able to price tag the get the job done on accurately the very same information with a least of energy. This therefore avoids duplication in quantifying the do the job, and lets for the fairest type of competitors. The monthly bill of quantities also supplies a precious aid to the pricing of variations and computation of valuations for interim certificates.
The monthly bill of portions offers a superior basis for cost preparing and, if organized in annotated form, will aid in the locational identification of the perform.
The invoice of portions commonly features various sections this kind of as preliminaries, preambles or descriptions of resources and workmanship, and the measured works. The preliminaries outline the scope and nature of the work, have specifics of the contract situations, list of drawings and any special guidelines to the contractor on pricing.
Primary price sums will be inserted in the monthly bill of quantities for operate to be carried out by nominated subcontractors and statutory authorities or for merchandise to be provided by nominated suppliers, and for which estimates or tenders have typically been acquired. Provisional sums go over work for which facts have not been finalised or for which prices are unknown at the time of preparing the invoice.
It is important that all drawings, schedules and specification particulars really should be checked and techniques taken to make sure that all cross references are accurate. The amount surveyor when measuring the do the job will be frequently examining all particulars, which include cross references, and will put together a question checklist for the architect covering the omission of vital details, discrepancies and ambiguities. This presents the architect with the opportunity to clarify these details and amend the documentation prior to tender phase. It is also advisable to check the adequacy of primary price and provisional sums, make certain that no information and facts is fantastic from consultants, that the amount surveyor has all the most up-to-date data and incorporates it in the bill of quantities, and that all consents have been gained and the situations complied with.