Concrete Technology Sheet 3
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1) Question.
According to IS : 456-1978, the minimum slenderness ratio for a short column is
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2) Question.
According to IS : 456-1978, the column or the strut is the member whose effective length is greater than
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3) Question.
According to IS : 456-1978, the fiexural strength of concrete is
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4) Question.
For a continuous slab of 3 m × 3.5 m size, the minimum overall depth of slab to satisfy vertical deflection limits is
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5) Question.
For a simply supported beam of span 15 m, the minimum effective depth to satisfy the vertical deflection limits should be
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6) Question.
For a cantilever of effective depth of 0.5m, the maximum span to satisfy vertical deflection limit is
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7) Question.
One of the criteria for the effective width of flange of T-beam is
bf=l0/6 + bw+6Df
In the above formula, l0 signifies
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8) Question.
The individual variation between test strength of sample should not be more than
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9) Question.
For walls, columns and vertical places of all structural members, the form work is generally removed after
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10) Question.
In case of hand mixing of concrete, the extra cement to be added is
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11) Question.
Maximum quantity of water needed per 50 kg of cement for M 15 grade of concrete is
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12) Question.
Modulus of elasticity of steel as per IS : 456-1978 shall be taken as
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13) Question.
For concreting of heavily reinforced sections without vibration, the workability of concrete expressed as compacting factor should be
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14) Question.
Minimum grade of concrete to be used in reinforced concrete as per IS : 456 - 1978 is
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15) Question.
If the permissible stress in steel in tension is 140 N/mm^2, then the depth of neutral axis for a singly reinforced rectangular balanced section will be
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16) Question.
If the depth of neutral axis for a singly reinforced rectangular section is represented by kd in working stress design, then the value of k for balanced section
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17) Question.
If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called
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18) Question.
If nominal shear stress Πv exceeds the design shear strength of concrete Πc, the nominal shear reinforcement as per IS : 456 - 1978 shall be provided for carrying shear stress equal to
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19) Question.
If a beam fails in bond, then its bond strength can be increased most economically by
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20) Question.
Diagonal tension in a beam
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