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Monday, January 3, 2011

Steps of a proper Estimation

A proper estimation is integrity of some sequential processes or steps. An accurate estimation gives you the chance to complete the project in schedule time and under budget. The basic understanding of the project estimation gives you some advantage which will be surely beneficial for you. That’s why it is very important to follow the steps of the project estimation properly. Here we will discuss the steps of a proper estimation.

The Design: First of all you have to study the design accurately. Only a clear understanding will give you a better idea about how the project is going to be after completion. The drawing and supporting electronic files are included to illustrate the general scope of improvements. You will take care of the essential factor of the construction like safety, traffic operations, durability, desired appearance, maintainability, environmental protection, drainage and other permitted constraints. The design review process is much more important because the success of the project is on the design.

The Required Software: Selecting the proper software required for the estimating a project is another important step for the project estimation. To find out the perfect software for the type of estimation is very important.

Taking out quantities: In the next step of taking out quantities, the measurements are taken off from the drawings and entered on measurement sheet or dimension paper. The measurements to be taken out would depend upon the unit of measurement. For example, in the case of stone masonry in superstructure, length, thickness and height of the walls above plinth level would be taken out from the drawings and entered on the measurement sheet, whereas, in the case of plastering only the lengths and heights of the walls would be entered. Obviously, the unit of measurement in the first case is cubic meter and that in the second case is square meter.

Squaring out: The fourth step consists of working out volumes, areas, etc. and casting up their total in recognized units.

Abstracting: In the last step all the items along with the net results obtained in the second step are transferred from measurement sheets to specially ruled sheets having rate column ready for pricing.

The last two steps above are known as working up. All calculations in these stages and every entry transferred should be checked by another person to ensure that no mathematical or copying error occurs

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