Building Construction
In ordinary residential and public buildings, the damp proof course is generally provided at

Ground level
Midway ground level and water-table level
Water table level
Plinth level

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Building Construction
For constructing a terrazzo floor, Pick up the incorrect statement from the following:

A base course is prepared as in cement concrete flooring
Glass strips are driven into the layer according to the pattern required
A 32 mm thick layer of cement concrete (1 : 2 : 4) is laid on the base course and the surface is made smooth by trowelling
After final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material

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Building Construction
Rotary drilling

All listed here
Is not suitable for deposits containing very coarse gravel
Is not economical for holes of less than 10 cm
Hinders the ground water observations and permeability test

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