For concreting of shallow sections with vibration, the work ability of concrete

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Question
For concreting of shallow sections with vibration, the work ability of concrete should be
Options
A. very low
B. low
C. medium
D. high.

Correct Answer

very low

Structural Design Specifications problems

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3. Pick up the correct statement from the following:
Options
A. The unit weight of plain concrete is assumed as 2400 N/m³
B. The unit weight of reinforced concrete is assumed as 2500 N/m³
C. The dead load includes self weight of the structural member plus weight of finishes and walls or partitions
D. All the above.

4. The concrete may be accepted if the average equivalent cube strength of the cores, is at least 85% of the cube strength of the concrete grade at the specified age and no individual core possesses strength less than
Options
A. 90%
B. 85%
C. 80%
D. 75%
E. 70%

6. Pick up the correct statement from the following:
Options
A. The diameter of a rivet, before driving is taken as the nominal diameter of the rivet
B. The diameter of the rivet hole is taken as the gross area of the rivet
C. For rivets of nominal diameters less than 25 mm, the diameter of the rivet hole is taken as the nominal diameter of the rivet plus 1.5 mm
D. For rivets of nominal diameters exceeding 25 mm, the diameter of the rivet hole is taken as the nominal diameter of the rivet plus 2 mm
E. All the above.

7. A solid slab spanning in two directions at right angles and carrying a uniformly distributed load, is supported on beams. If the length of two such beams A and B perpendicular to each other are x and y (x<y), the load shared by the beam A, is
Options
A.
B.
C.
D.

8. In the formula a + bk for the calculation of the net effective section of single tee in tension connected by flange to the same side of the same side of the gusset, the value of 'k' is taken
Options
A.
B.
C.
D.

9. Pick up the correct statement from the following:
Options
A. For steel castings, the minimum tensile strength is 41 kg/mm² and minimum yield stress is 20.5 kg/mm²
B. For mild steel the minimum tensile strength is 44 kg/mm² and minimum elongation of 23% on a gauge length of 5.65A
C. For high tensile steel, the minimum tensile strength is 58 kg/mm²
D. All the above.

10. If b is actual width of a flange, D_t is the thickness of the flange, b_? is the breath of the web, l_o is the distance between the points of zero moments in a beam, the effective width of the flange, is
Options
A.
B.
C.
D.

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