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

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

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Estimating and Costing
Pick up the correct statement regarding the centre line method of estimating a building

All of these
The centre line is worked out separately for different sections of walls of a building
Product of the centre line of the walls and area of cross-section of any item, gives total quantity of the item
The centre line length is reduced by half the layer of main wall joining the partition wall

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

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
It is provided a cleaning eye at the top of the trap
The mica flap valve which opens inwards only, is fitted at the top of the inlet pipe

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