UNIT I ESTIMATE OF BUILDINGS
Estimating is the technique of calculating or computing the variousquantities and the expected
Expenditure to be incurred on a particular work orproject. In case the funds available are less
than the estimated cost the work isdone in part or by reducing it or specifications are altered, the
following requirementare necessary for preparing an estimate.
1. Drawings like plan, elevation and sections of important points.
2. Detailed specifications about workmanship& properties of materials etc.
3. Standard schedule of rates of the current year.
UNITS OF MEASUREMENTS
The units of measurements are mainly categorized for their nature, shape and size and for
making payments to the contractor and also. The principle of units of measurements normally
consists the following:
a) Single units work like doors, windows, trusses etc., is expressed in numbers.
Works consists linear measurements involve length like cornice, fencing, hand rail,
bands of specified width etc., are expressed in running meters (RM)
c) Works consists areal surface measurements involve area like plastering, white washing,
partitions of specified thickness etc., and are expressed in square meters (m2)
Works consists cubical contents which involve volume like earth work, cement concrete,
Masonry etc are expressed in Cubic metres.
RULES FOR MEASUREMENT
The rules for measurement of each item are invariably described in IS- 1200. However some
of the general rules are listed below.
1.Measurement shall be made for finished item of work and description of each item shall
include materials, transport, labor, fabrication tools and plant and all types of overheads for
finishing the work in required shape, size and specification.
2. In booking, the order shall be in sequence of length, breadth and height or thickness
3. All works shall be measured subject to the following tolerances.
linear measurement shall be measured to the nearest 0.01m.