Building Construction
Pick up the correct statements from the following:

Cracks appear on the plastered surface in the form of hair cracks
In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water
Excessive thermal variations in the backing or plaster causes the plaster to fall
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Building Construction
Mansard roof is a roof which slopes in

Four directions with break in the slope on each side
Four directions without break in the slope on each side
Two directions without break in the slope on each side
Two directions with break in the slope on each side

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Building Construction
Two columns 50 cm × 50 cm and 60 cm × 60 cm carry 80 tonnes and 120 tonnes of loads respectively. The centre to centre distance between columns is 5.00 metres. The permissible bearing capacity of the soil is 20 t/m2. If the footing is not to project more than 25 cm beyond the outside of the smaller column, pick up the correct design parameters of the footing from the following:

Distance of C.G. of the loads from the smaller column = 3.00 m
Area of footing slab = 11.00 m2
The length of the foundation slab = 7.00 m
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