To find the Reduced Level of a roof slab of building, staff readings w – McqOptions

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1.	To find the Reduced Level of a roof slab of building, staff readings were taken from a particular set-up of the levelling instrument. The readings were 1.050 m with staff on the Bench Mark and 2.300 m with staff below the roof slab and inverted.Taking the Reduced Level of the Bench Mark as 135.15 m, the Reduced Level of the roof slab will be?
A.	129.8
B.	131.9
C.	134.4
D.	138.5
Answer» E.

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