LONG WALL & SHORT WALL METHOD

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 of Long wall for an item = length of long wall C/C + One width of an item (Half width of each end)

4. Measure the length of short wall for an item by using formula-

Length of Short wall for an item = length of short wall C/C - One width of an item (Half width of each end)

5. Multiply no., length, width, & depth/height to get quantity of an item.

Check out video to better understand