A wall has a dimension of 35 meters long and and 7 meters high specify the use of 15 cm. concrete hollow blocks. Prepare a comparative bill of materials for CHB.
15 x 20 x 40 cm. CHB wall
find the area of the wall
A= 35 x 7
A= 275 sq. m.
1 sq. m. of a wall consist of 12.5 pcs of CHB
275 x 12.5 = 3,437.5 pcs of CHB