Given,
Length of Wall = 6 m
Height of wall = 3 m
Mortar Ratio = 1:5
Thickness of Mortar = 25 mm
Size of Block = 400 mm x 150 mm x 200 mm
Solution:
Volume of Wall = L x B x H
= 6 x 0.15 x 3
= 2.7 Cum.
Volume of 1 Hollow Block = 0.4 x 0.15 x 0.2
= 0.012 Cum
Volume of 1 Hollow Block with Mortar = 0.425 x 0.15 x 0.225
= 0.014 Cum.
Number of Hollow Blocks = Volume of Wall
Volume of 1 Hollow Block with Mortar
= 2.7 / 0.014
= 192.85
= 193 Blocks.
Total Volume of Block = Number of Blocks x Volume of 1 Block
= 193 x 0.012
= 2.136 Cum
Volume of Mortar = Volume of Wall - Total Volume of Block
= 2.7 - 2.316
= 0.384 Cum ( Wet Volume)
Now convert Wet Volume in Dry Volume
Dry Volume of Mortar = 0.384 x 1.33
= 0.51 Cum.
Volume of Cement = ( Dry Volume x Ratio of Cement x Density of Cement) / Sum of Ratio
= ( 0.51 x 1 x 1440 ) / 6
= 122.4 Kg
Cement in Bags = 1224.4 / 50
= 2.4 Bags
Volume of Sand = ( Dry Volume x Ratio of Sand ) / Sum of Ratio
= ( 0.51 x 5 ) / 6
= 2.55 Cum
Sand in CFT = 2.55 x 35.3147
= 15.008 CFT.
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