Estimating Sheets


Detial process of learning construction takeoff



The quantity “takeoff” is an important part of the cost estimate. It must be as accurate as
possible and should be based on all available engineering and design data. Use of
appropriate automation tools is highly recommended. Accuracy and completeness are
critical factors in all cost estimates. An accurate and complete estimate establishes
accountability and credibility of the cost engineer, therefore, providing greater confidence
in the cost estimate. The estimate contingencies for programming purposes reflect the
estimate confidence.

Importance of Quantity Takeoff and Required Documents

The quantity of material in a project can be accurately determined from the drawings. The estimator must review each sheet of the drawings, calculate the quantity of material and record the amount and unit of measure. Each estimator must develop a system of quantity takeoff that ensures that a quantity is not omitted or calculated twice. A wellorganized check-list of work will help reduce the chances of omitting an item. The estimator must, also, add an appropriate percentage for waste for those items where waste is likely to occur during construction.

Quantity Takeoff

The most important document from the legal point of view is the agreement. It is sometimes called the contract. Since so many documents are included as contract documents, the agreement is the better term for this particular one. The form of the agreement can be standardized and used for many projects, or a unique document can be prepared for each project. The standard form of agreement prescribed by the American Institute of Architects has proved to be satisfactory and has been used on many building projects with good results. The form followed for non-building projects is often more varied. Man: agencies have own standard forms, which are used on all their projects. (Click PDF for comp news)

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