Structural Design Specifications MCQ - Set 03 - ObjectiveBooks

Structural Design Specifications MCQ - Set 03

Practice Test: Question Set - 03

1. Pick up the correct statement from the following:
    (A) Net sectional area of a tension member is its gross area less deductions for holes
    (B) Gross diameter of river hole is 1.5 mm in excess of its normal diameter if it is greater than 25 mm
    (C) Gross diameter of the rivet hole is 2.0 mm in excess of its normal diameter if it is greater than 25 mm
    (D) All the above

2. For nominal mix concrete M 15, the required weight of fine and coarse aggregates is 350 kg and the volume of water is
    (A) 30 liters
    (B) 32 liters
    (C) 34 liters
    (D) 45 liters

3. The pitch of transverse reinforcement of a column is taken as
    (A) Least lateral dimension of the compression member
    (B) Sixteen times the smallest diameter of the longitudinal reinforcement of the column
    (C) Forty eight times the diameter of the transverse reinforcement
    (D) Least value of the above

4. Bending moment values for filler joists
    (A) Near middle of end span is + wL2/10
    (B) At support next to end support is - wL2/10
    (C) At middle of interior spans is + wL2/12
    (D) All the above

5. The width of lacing bars in mm is kept
    (A) Equal to nominal rivet diameter
    (B) Twice the nominal rivet diameter
    (C) Thrice the nominal rivet diameter
    (D) Maximum of the above rounded to nearest 5 mm

6. 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
    (A) 1/[1 + 0.25 (b/a)]
    (B) 1/[1 + 0.35 (b/a)]
    (C) 1/[1 + 0.20 (b/a)]
    (D) 1/[1 + 0.5 (b/a)]

7. Minimum thickness of steel work directly exposed to weather but not accessible for cleaning and repainting, the thickness should be not less than
    (A) 4 mm
    (B) 6 mm
    (C) 7 mm
    (D) 8 mm

8. The minimum area of cross section of reinforcement in either direction of a slab should not be less than _________ of the slab cross section.
    (A) 0.75 %
    (B) 0.10 %
    (C) 0.15 %
    (D) 0.20 %

9. The maximum bending moment in a purlin of length L when subjected to a distributed load ω, is assumed
    (A) ωL/6
    (B) ωL/8
    (C) ωL/10
    (D) ωL/12

10. The area of the concrete in compression plus the area of reinforcement transferred on the basis of modular ratio, is called
    (A) Transferred section
    (B) Equivalent section
    (C) Cracked section
    (D) None of these

11. The ratio of the effective lengths of two columns, one effectively held in position at one end and partially restrained at the other end, and the other effectively held in position at one end and free at the other end, is
    (A) 1/2
    (B) 2/3
    (C) 3/4
    (D) 3/2

12. The depth 'd' of webs without horizontal stiffeners and consisting of tongue plates is taken lesser than the depth of the girder between the flanges less the sum of the depth of the tongue plates, and
    (A) Eight times the sum of the thickness of tongue plates
    (B) Six times the sum of the thickness of tongue plates
    (C) Four times the sum of the thickness of tongue plates
    (D) None of the above

13. Removal of props under
    (A) Slabs spanning upto 4.5 m is 7 days
    (B) Slabs spanning more than 4.5 m is 14 days
    (C) Beams spanning upto 6 m is 14 days
    (D) All the above

14. The concrete is deemed not to comply with the strength requirements if the strength is less than the greater of
    (A) Characteristic strength minus 1.35 times the standard deviation
    (B) 0.8 times the characteristic strength
    (C) The average strength of all the samples is less than the characteristic strength plus [1.65 - 3/number of samples] times the standard deviation
    (D) All the above

15. If the end of a beam of span L carrying a designed load W is partially restrained by a built up wall, it is designed to resist the negative moment at the face of the support, equal to
    (A) WL/10
    (B) WL/12
    (C) WL/16
    (D) WL/24

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