Estimating and Costing
The following item of earth work is not measured separately.

All listed here
Site clearance
Setting out of works
Steps in deep excavation

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

The water seal is less than that of ordinary traps
It is provided in between the lower end of the house drain and the street sewer
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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