To obtain the length of longwall or shortwall, initially work out the centre line lengths of individual walls.

Long Wall and Short wall method - Under this method, the wall across the length of room is treated as long wall whereas the wall vertical to long wall is considered as short wall. Such junction or joints are evaluated carefully while going to calculate the total centre line length. When cross walls or partitions or verandah walls are affixed with main wall, the length of the centre line is reduced by half of breadth for each junction. To quickly determine the total quantity, the total centre line length is multiplied with breadth and depth of related item. This method ( Centre line ) is effective for walls which contain identical cross sections.

The following types of estimating methods are mostly recognized :-Д¬enter line method, Long wall and short wall method, Bay method, Service unit methodД¬enter line method: This method is used to determine the quantity of wall or any construction building. The method is used with the plan of the building with section. Parag Pal, has briefly explained the center line method for computing quantities of materials used in the building. In this construction video tutorial, the renowned engineer, Mr.

Centerline method building estimate