A hollow concrete masonry unit has an actual dimension of 150mm x 200mm x 400mm (W x H x L). The unit was tested in a compression machine with the following result. Failure load = 1,200 kN Net volume = 4,400,000 mm3 Determine: a) the gross area compressive strength. b) the net area compressive strength.

Structural Analysis
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Chapter2: Loads On Structures
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A hollow concrete masonry unit has an actual dimension of 150mm x 200mm x 400mm
(W x H x L). The unit was tested in a compression machine with the following result.
Failure load = 1,200 kN
Net volume = 4,400,000 mm3
Determine: a) the gross area compressive strength.
b) the net area compressive strength.

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