A raft foundation is provided if its area exceeds the plan area of the building by______________?

A. 10 %
B. 20 %
C. 40 %
D. 50 %

The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes_______________?

A. With the horizontal
B. With the vertical
C. With the perpendicular to the inclined plane of the soil
D. None of these

The system in which high tensile alloy steel bars (silica manganese steel) are used as prestressing tendons, is known as________________?

A. Freyssinet system
B. Magnel-blaton system
C. c.l. standard system
D. Lee-mccall system

In a doubly-reinforced beam if and the effective depth and is depth of critical neutral axis, the following relationship holds good______________?

A. Mc/t = n/(d – n)
B. (m + c)/t = n/(d + n)
C. (t + c)/n = (d + n)/n
D. Mc/t = (d – n)/t

The length of the lap in a compression member is kept greater than bar diameter x (Permissible stress in bar / Five times the bond stress) or____________________?

A. 12 bar diameters
B. 18 bar diameters
C. 24 bar diameters
D. 30 bar diameters

An under-reinforced section means_________________?

A. Steel is provided at the underside only
B. Steel provided is insufficient
C. Steel provided on one face only
D. Steel will yield first

The section of a reinforced beam where most distant concrete fibre in compression and tension in steel attains permissible stresses simultaneously, is called_________________?

A. Balanced section
B. Economic section
C. Critical section
D. All the above

If the length of a wall on either side of a lintel opening is at least half of its effective span L, the load W carried by the lintel is equivalent to the weight of brickwork contained in an equilateral triangle, producing a maximum bending moment____________________?

A. Wl/2
B. Wl/4
C. Wl/6
D. Wl/8

If the maximum shear stress at the end of a simply supported R.C.C. beam of 16 m effective span is 10 kg/cm2, the length of the beam having nominal reinforcement, is________________?

A. 8 cm
B. 6 m
C. 8 m
D. 10 m

With usual notations the depth of the neutral axis of a balanced section, is given by______________?

A. Mc/t = (d – n)/n
B. T/mc = (d – n)/n
C. T/mc = (d + n)/n
D. Mc/t = n/ (d – n)