Building Construction
Engineering news formula for obtaining safe bearing capacity of pile for drop hammer, is,

Q = Wh/2.5 (S + 6)
Q = (W × 2.5)/6 (S + h)
Q = Wh/6 (S + 2.5)
Q = (W × 6)/h (S + 2.5)

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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:

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

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