Measurement of Construction Works II

Data Required for Preparing an Estimate:

In order to prepare a detailed estimate the estimator must have with him the following data:

1. Plans, sections and other relevant details of the work.
2. Specifications indicating the exact nature and class of materials to be used.
3. The rates at which the different items of work are carried out.

To enable an estimator to take out the quantities accurately, the drawings must themselves be clear, true to the fact and scale, complete, and fully dimensioned. The estimator has also to bear in mind certain principles of taking out quantities.

Steps in Preparation of an Estimate:

2. Squaring out.

3. Abstracting 

.

 Principles of Deciding Unit of Measurement

1. The unit of measurement should be simple and convenient to measure, record and understand.

2. It should be one, which provides for fair payment for the work involved.

3. In the result it should yield quantities, which are neither too minute nor too large.

4. The price per unit should not be a very small figure or a very large one,