Related Questions

The anchorage value of a hook is assumed sixteen times the diameter of the bar if the angle of the bend, is
A 30°
B 40°
C 45°
D All the above
If the main reinforcement of the slab is parallel to a T-beam, the transverse reinforcement at mid span of the slab is provided at least __________ of main reinforcement.
A 40%
B 50%
C 60%
D 70%
When a bar of length '$$l$$' and diameter 'd' is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where w = Weight per unit volume of the bar)
A $$\frac{{{\text{w}}l}}{{2{\text{E}}}}$$
B $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$
C $$\frac{{{\text{w}}{l^3}}}{{2{\text{E}}}}$$
D $$\frac{{{\text{w}}{l^4}}}{{2{\text{E}}}}$$
The radius of a bar bend to form a hook, should not be less than
A Twice the diameter
B Thrice the diameter
C Four times the diameter
D Five times the diameter
The length of the straight portion of a bar beyond the end of the hook, should be at least
A Twice the diameter
B Thrice the diameter
C Four times the diameter
D Seven times the diameter
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
The diameter of transverse reinforcement of columns should be equal to one-fourth of the diameter of the main steel rods but not less than
A 4 mm
B 5 mm
C 6 mm
D 7 mm
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
For a longitudinal reinforcing bar in a column, the minimum cover shall neither be less than the diameter of bar nor less than
A 15 mm
B 25 mm
C 30 mm
D 40 mm
The length of a conical bar is $$l$$, diameter of base is d and weight per unit volume is w. It is fixes at its upper end and hanging freely. The elongation of the bar under the action of its own weight will be
A $$\frac{{{\text{w}}{l^2}}}{{2{\text{E}}}}$$
B $$\frac{{{\text{w}}{l^2}}}{{4{\text{E}}}}$$
C $$\frac{{{\text{w}}{l^2}}}{{6{\text{E}}}}$$
D $$\frac{{{\text{w}}{l^2}}}{{8{\text{E}}}}$$

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