Simple method to calculate chippings quantity required for slab

Since concrete is the most used building material, chippings which acts as coarse aggregates is one of the most important building elements which has cost implications if not well optimized. You may want to do a check of the cement quantity for your building project. Kindly follow the process below in this case:


Slab area= 180 square meters

Slab thickness= 150mm (6 inches)

Length of beam = 130 meters

Slab chippings calculation

Chippings required= Volume of concrete x tonnes of chipping per cubic meter

Chippings per cubic meter of concrete is 1.7 to 2 tonnes

Volume of slab= Slab Area x Slab thickness

Slab area= 180 sq.m

Thickness used= 150mm

Volume of slab= 180 x .15m


Volume of beams= Total length of beams x width of beam x Height of beam

=130m x 0.225m x 0.3m= 8.8 m3


Total volume= 37.9 cubic meters

Chippings required= 37.9 cubic meters x 1.7 tonnes per cubic meter

=64.4 metric tonnes


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