Quantity surveying construction 333

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Quantity surveying construction 333
A 20 X 12 building with a 4 in 12 pitch has plywood siding.
a) How many sheets of plywood is needed to cover roof with 2′ 0″ overhang?
b) how many studs are needed for the perimeter walls if the studs are 16″ o.c? c) calculate for corners with 3 each extra
B
a) How many cubic yards of topsoil will one excavate from the building site in A (-above) with a topsoil depth of 1′ 0″?
b) How many acres are in the site in question A?

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