#### Building Construction

1

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

A. Q = (w.h)/(6(S + 2.5))
B. Q = (w.h)/(2.5(S + 6))
C. Q = (w.6)/(h(S + 2.5))
D. Q = (wxx.2.5)/(6(S + h))

2

According to Rankine's formula, minimum depth of foundations, is

A. p/w x ((1 + sin varphi)/(1 - sin varphi))^2
B. p/w x ((1 - sin varphi)/(1 + sin varphi))^2
C. (p)/(2w) x ((1- sin varphi)/(1 + sin varphi))^2
D. p/w x ((1 + sin varphi)/(1 - sin varphi))

3

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

A. wh x (1 - sin varphi)/(1 + sin varphi)
B. (wh)/(2) x (1 - sin varphi)/(1 + sin varphi)
C. wh x sqrt((1 - sin varphi)/(1 + sin varphi))
D. wh x sqrt((1+ sin varphi)/(1 - sin varphi))

4

A stair should not have pitch more than

A. 250
B. 300
C. 400
D. 500
E. 600

5

In flat roof of reinforced cement concrete, the recommended angle of slope, is

A. zero
B. a few degrees
C. 100
D. 2000.