Planning & EstimatingQuestion 590 of 700
A concrete masonry wall is 10 ft high and 30 ft long, built with standard 8x8x16 CMU. Using the rule of 1.125 blocks per square foot of wall face, what is the MINIMUM number of blocks (before waste)?
a.300 blocks
b.338 blocks
c.375 blocks
d.169 blocks
Explanation
Wall face = 10 x 30 = 300 sq ft. Blocks = 300 x 1.125 = 337.5, round up to 338 (b). Option (a) forgets the 1.125 factor. Option (c) uses 1.25 per sq ft. Option (d) uses half the wall area.
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