Building Construction
If (φ) is the angle of repose of soil of weight w kg/m3, the horizontal pressure p at a depth of h meters per metre length of wall, is

wh × √[(1 - sin φ)/(1 + sin φ)]
wh × √[(1 + sin φ)/(1 - sin φ)]
(wh/2) × [(1 - sin φ)/(1 + sin φ)]
wh × [(1 - sin φ)/(1 + sin φ)]

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

After final grinding is over, oxalic acid mixed with water is spread over and rubbed hard with soft material
Glass strips are driven into the layer according to the pattern required
A base course is prepared as in cement concrete flooring
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

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