Estimating and Costing
Referring of given figure, pick up the correct statement from the following:

The total length of centre line of four walls is 20 m
All listed here
Length of long wall out-to-out is 6.80 m
Length of short walls in-to-in is 3.20 m

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Estimating and Costing
Pick up the incorrect statement regarding a master trap from the following:

It is provided a cleaning eye at the top of the trap
It is provided in between the lower end of the house drain and the street sewer
The water seal is less than that of ordinary traps
The mica flap valve which opens inwards only, is fitted at the top of the inlet pipe

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Estimating and Costing
While estimating a reinforced cement structure, the omitted cover of concrete is assumed

In thin slabs, 12 mm minimum or diameter of the bar whichever is more
For reinforcing longitudinal bar in a beam 25 mm minimum or diameter of the largest bar which is more
At the end of reinforcing bar, not less than 25 mm or twice the diameter of the bar
All of these

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