Q.1
The Young's modulus of elasticity of steel, is
Q.2
If q is the punching shear resistance per unit area a, is the side of a square footing for a column of side b, carrying a weight W including the weight of the footing, the depth (D) of the footing from punching shear consideration, is
Q.3
In favourable circumstances a 15 cm concrete cube after 28 days, attains a maximum crushing strength
Q.4
The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes
Q.5
For a continuous floor slab supported on beams, the ratio of end span length and intermediate span length, is
Q.6
Long and short spans of a two way slab are ly and lx and load on the slab acting on strips parallel to lx and ly be wx and wy respectively. According to Rankine Grashoff theory
Q.7
A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n?. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is
Q.8
The load stress of a section can be reduced by
Q.9
The horizontal portion of a step in a stairs case, is known as
Q.10
An under-reinforced section means
Q.11
If the effective length of a 32 cm diameter R.C.C. column is 4.40 m, its slenderness ratio, is
Q.12
The system in which high tensile alloy steel bars (silica manganese steel) are used as pre-stressing tendons, is known as
Q.13
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
Q.14
The maximum shear stress (qmax) in a rectangular beam is
Q.15
A pre-stressed concrete member
Q.16
For the design of a simply supported T-beam the ratio of the effective span to the overall depth of the beam is limited to
Q.17
A circular slab subjected to external loading, deflects to form a
Q.18
If the maximum shear stress at the end of a simply supported R.C.C. beam of 6 m effective span is 10 kg/cm², the share stirrups are provided for a distance ‘x’ from either end where, ‘x’ is
Q.19
The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is
Q.20
If ‘W’ is the load on a circular slab of radius ‘R’, the maximum radial moment at the centre of the slab, is
Q.21
If W is the load on a circular slab of radius R, the maximum circumferential moment at the centre of the slab, is
Q.22
The live load to be considered for an accessible roof, is
Q.23
The live load to be considered for an inaccessible roof, is
Q.24
A reinforced concrete cantilever beam is 3.6 m long, 25 cm wide and has its lever arm 40 cm. It carries a load of 1200 kg at its free end and vertical stirrups can carry 1800 kg. Assuming concrete to carry one-third of the diagonal tension and ignoring the weight of the beam, the number of shear stirrups required, is
Q.25
In a slab, the pitch of the main reinforcement should not exceed its effective depth
Q.26
If ‘A’ is the sectional area of a pre-stressed rectangular beam provided with a tendon pre-stressed by a force ‘P’ through its centroidal longitudinal axis, the compressive stress in concrete, is
Q.27
If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is
Q.28
The modular ratio ‘m’ of a concrete whose permissible compressive stress is ‘C’, may be obtained from the equation.
Q.29
The breadth of a ribbed slab containing two bars must be between
Q.30
The stresses developed in concrete and steel in reinforced concrete beam 25 cm width and 70 cm effective depth, are 62.5 kg/cm² and 250 kg/cm² respectively. If m = 15, the depth of its neutral axis is
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