Methods Of Taking Out Quantities & Examples

PROCESS OF TAKING OUT QUANTITIES:-

The quantities like earth work, foundation concrete, brickwork in plinth and super structure etc., can be workout by any of following  methods.

a) Long wall - short wall method
b) Center line method
c) Partly center line and short wall method

a) Long wall-short wall method:-

long wall short wall method

In this method, the wall along the length of room is considered to be long wall while the wall perpendicular to long wall is said to be short wall. To get the length of long wall or short wall, calculate first the center line lengths of individual walls. Then the length of long wall, (out to out) may be calculated after adding half breadth at each end to its center line length. Thus the length of short wall measured into in and may be found by deducting half breadth from its center line length at each end. The length of long wall usually decreases from earth work to brick work in super structure while the short wall increases. These lengths are multiplied by breadth and depth to get quantities.

b) Center line method:-

center line method

This method is suitable for walls of similar cross sections. Here the total center line length is multiplied by breadth and depth of respective item to get the total quantity at a time. When cross walls or partitions or veranda walls join with main all, the center line length gets reduced by half of breadth for each junction. such junction or joints are studied carefully while calculating total center line length.The estimates prepared by this method are most accurate and quick.

Some example with problems of Quantity Taking Out Process:-

I. Example 1: From the given figure below calculate the detailed and abstract estimate for the single roomed building (Load bearing type structure) by a) long wall & short wall method (b) Center Line Method.


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