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Estimating Wing

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3.1.1 Preparation of BOQ

BOQ means a bill of quantity is a document prepared by a cost estimator (Quantity Surveyor) to calculate the exact costing of project work by multiplying item work by their rate. It is the most important document for bidding and contracting. Bill of quantity (Sometimes called the Engineers Estimate) gives an idea about the cost of a project that is bidding firm willing to offer.


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It is useful in cost planning before tendering process. Tendering – BOQ with empty unit rate is given to contractors or bidders. They fill rate as per their cost, and the bidder with lowest cost is announced winner. (Also based on other qualification criteria). It provides basic idea to the investor about costing of a project. It provides a basis for valuation of variation. (Variation is to be discussed in detail)

Bid documents include the plans, specifications and estimates (PS&E) developed to describe all of the elements of a construction project and become the contract between the Client and the selected contractor.

Preparation of bid documents can be a complex task that includes many elements to address all applicable local, state and federal requirements. Each of the following items should be evaluated and incorporated into the bid documents if desirable or if required by regulations:

Construction contract documents define the basis of the contract including parties’ roles, responsibilities, and detailed description of the work or service such as drawings, specifications, procedures, any other conditions, etc. Contract document include sufficient information to be able to complete the work or service and is a legally-binding binding document on the parties (Owner and Contractor. The Bidding Document itself represents a major component of the contract Document

This includes review of all the contract documents and verification of Interim Payment Certificate (IPC) for the disbursal on the basis of reports, photographs, project status provided by the client. Additional documents are requested with the client in case of disputes and site inspection is done if required. The monitoring work primarily includes construction work progress matching with Bill of Quantities, specifications, contract documents, and approved design and drawing. This ensures timely completion of the project complying with necessary quality and standards.