Civil Engineering - RCC Structures Design

Exercise :: RCC Structures Design - Section 1
26.
The number of treads in a flight is equal to

A.
risers in the flight B.
risers plus one C.
risers minus one D.
none of these.

Answer: Option C

Explanation:

27.
A short column 20 cm x 20 cm in section is reinforced with 4 bars whose area of cross section is 20 sq. cm. If permissible compressive stresses in concrete and steel are 40 kg/cm^{2} and 300 kg/cm^{2} , the Safe load on the column, should not exceed

A.
4120 kg B.
41, 200 kg C.
412, 000 kg D.
none of these.

Answer: Option B

Explanation:

28.
The reinforced concrete beam which has width 25 cm, lever arm 40 cm, shear force 6t/cm^{2} , safe shear stress 5 kg/cm^{2} and B.M. 24 mt,

A.
is safe in shear B.
is unsafe in shear C.
is over safe in shear D.
needs redesigning.

Answer: Option B

Explanation:

29.
In a beam the local bond stress S_{b} , is equal to

Answer: Option A

Explanation:

30.
According to I.S. : 456 specifications, the safe diagonal tensile stress for M 150 grade concrete, is

A.
5 kg/cm^{2} B.
10 kg/cm^{2} C.
15 kg/cm^{2} D.
20 kg/cm^{2} E.
25 kg/cm^{2}

Answer: Option A

Explanation: