If Sb, is the average bond stress on a bar of diameter subjected to maximum stress , the length of the embedment is given by_____________?
(A) l = dt/Sb
(B) l = dt/2Sb
(C) l = dt/3Sb
(D) l = dt/4Sb
The minimum cube strength of concrete used for a pre-stressed member, is________________?
(A) 50 kg/cm2
(B) 150 kg/cm 2
(C) 250 kg/cm2
(D) 350 kg/cm2
The amount of reinforcement for main bars in a slab, is based upon___________________?
(A) Minimum bending moment
(B) Maximum bending moment
(C) Maximum shear force
(D) Minimum shear force
A simply supported beam 6 m long and of effective depth 50 cm, carries a uniformly distributed load 2400 kg/m including its self weight. If the lever arm factor is 0.85 and permissible tensile stress of steel is 1400 kg/cm2, the area of steel required, is___________________?
(A) 14 cm 2
(B) 15 cm2
(C) 16 cm2
(D) 17 cm2
Pick up the incorrect statement from the following?
(A) In the stem of a retaining wall, reinforcement is provided near the earth side
(B) In the toe slab of a retaining wall, reinforcement is provided at the bottom of the slab
(C) In the heel slab of a retaining wall, reinforcement is provided at the top of the slab
(D) None of these
In a simply supported slab, alternate bars are curtailed at________________?
(A) 1/4th of the span
(B) 1/5th of the span
(C) 1/6th of the span
(D) 1/7th of the span
If the modular ratio is , steel ratio is and overall depth of a beam is , the depth of the critical neutral axis of the beam, is___________________?
(A) [m/(m – r)] d
(B) [m/(m + r)] d
(C) [(m + r)/ m] d
(D) [(r – m)/m] d
For a number of columns constructed in a rcjw, the type of foundation provided, is_______________?
(A) Footing
(B) Raft
(C) Strap
(D) Strip
As the percentage of steel increases________________?
(A) Depth of neutral axis decreases
(B) Depth of neutral axis increases
(C) Lever arm increases
(D) Lever arm decreases
The length of lap in tension reinforcement should not be less than the bar diameter × (actual tension / four times the permissible average bond stress) if it is more than_______________?
(A) 18 bar diameters
(B) 24 bar diameters
(C) 30 bar diameters
(D) 36 bar diameters