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Q. Prepare Rate analysis for a PCC work (1:3:6). Sol n .:- Given: - Concrete grade = M10 (1:3:6) Take = 10m 3 volume for PCC Add 52% extra for voids to get dry vol m . of Concrete. Volume of dry concrete = 1.52×10 = 15.2 m 3 Quantity of cement = (15.2/(1+3+6) ) ×1 ...
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SCHEDULE OF RATES
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Schedule of
rates or list of rates of different items is made after the analysis of rates
of these items. This type of document is called the schedule of rates or S.O.R.
It is made by large concerns or public bodies. It becomes very helpful,
particularly in deciding the rate of an extra item, carried out by the
contractor. A schedule of rates for each kind of work is maintained by the
various engineering department or authorized organizations in the form of a
printed books called "Schedule of
Rate Books".
1. Schedule
of rates includes the rate of wages of labour, rate per unit of different items
of work and materials, and rates of transport and it also consists of groups of
items like excavation items, demolishing items, brickwork items concrete items,
etc.
2. As the
rates of items noted in the schedule of rates are likely to vary.
3. The
schedule of rates is regularly updated, generally after three years.
4. In the
schedule required analysis of the rates for the different conditions should be
provided.
5. The
schedule of rate is made on the basis of analysis of rates.
Generally, transport of materials up to distance of 5 miles (8 km)
is added in the rates.
Q. Prepare Rate analysis for a PCC work (1:3:6). Sol n .:- Given: - Concrete grade = M10 (1:3:6) Take = 10m 3 volume for PCC Add 52% extra for voids to get dry vol m . of Concrete. Volume of dry concrete = 1.52×10 = 15.2 m 3 Quantity of cement = (15.2/(1+3+6) ) ×1 ...
Long Wall &Short Wall or 'Out-to-Out and In-to-In' Method In this method, the longer walls in a building are taken as long walls & calculated from out-to-out & the partition or shorter walls which make the right angle with the long walls are taken as short walls and are calculated from in-to-in for a particular layer of work. To calculate the quantities multiplying the lengths of long & short walls by the breadth & the height of wall. These lengths of long and short walls differ in each layer of footing. PROCEDURE:- 1. Prepare the foundation plan shown in fig. with all dimensions. Centre-to-Centre dimensions are taken out by adding half width of each cross wall to inner dimension of room. 2. Now divide the walls into two groups. In plan, walls in the horizontal direction are called Long walls & vertical direction walls are called Short walls & Vice-Versa. 3. Measure the length of long wall for an item by using formula- Length ...
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