Practice Test: Question Set - 10
1. According to I.S. : 800 - 1871, lacing bars resist transverse shear equal to
- (A) 1.0% of the
axial load
- (B) 2.0% of the
axial load
- (C) 2.5% of the
axial load
- (D) 3.0% of the
axial load
2. The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as
- (A) 1.8 L
- (B) L
- (C) 1.1 L
- (D) 1.5 L
3. The method of design of steel framework for greatest rigidity and economy in weight, is known as
- (A) Simply
design
- (B) Semi-rigid
design
- (C) Fully rigid
design
- (D) None of
these
4. For a cantilever beam of length ‘L’ built-in at the support and restrained against torsion at the free end, the effective projecting length ‘l’ is
- (A) l =
0.7 L
- (B) l =
0.75 L
- (C) l =
0.85 L
- (D) l =
0.5 L
5. Economical depth of a plate girder corresponds to
- (A) Minimum weight
- (B) Minimum depth
- (C) Maximum weight
- (D) Minimum thickness of web
6. Slenderness ratio of a compression member is
- (A) Moment of
inertia/Radius of gyration
- (B) Effective
length/Area of cross-section
- (C) Radius of
gyration/Effective length
- (D) Radius of
gyration/ Area of cross-section
7. The least permissible clear dimension of the web of thickness t in the panel of a plate girder, is restricted to
- (A) 150 t
- (B) 160 t
- (C) 170 t
- (D) 180 t
8. Bearing stiffeners are provided at
(i) The supports
(ii) The mid span
(iii) The point of application of
concentrated loads
The correct answer is
- (A) Only (i)
- (B) Both (i) and (ii)
- (C) Both (i) and (iii)
- (D) (i), (ii) and (iii)
9. Web crippling generally occurs at the point where
- (A) Bending
moment is maximum
- (B) Shearing
force is minimum
- (C) Concentrated
loads act
- (D) Deflection
is maximum
10. Pick up the correct statement from the following:
- (A) The
slenderness ratio of lacing bars for compression members should not exceed 145
- (B) The minimum
width of lacing bar connected with rivets of nominal diameter 16 mm, is kept 50
mm
- (C) The minimum
thickness of a flat lacing bar is kept equal to one-fortieth of its length
between inner end rivets
- (D) All the
above
11. The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. The value of 'h' is
- (A) 10 m
- (B) 20 m
- (C) 25 m
- (D) 50 m
12. If d is the distance between the flange angles, the vertical stiffeners in plate girders are spaced not greater than
- (A) d
- (B) 1.25 d
- (C) 1.5 d
- (D) 1.75 d
13. If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a distance not greater than
- (A) d but
not less than 0.20 d
- (B) 1.25 d but
not less than 0.33 d
- (C) 1.5 d but
not less than 0.33 d
- (D) 2.0 d but
not less than 0.50 d
14. The allowable tensile stress in structural mild steel plates for steel tank is assumed as
- (A) 95.0 MPa on net area
- (B) 105.5 MPa on net area
- (C) 105.5 MPa on gross area
- (D) 150.0 MPa on gross area
15. A second horizontal stiffener is always placed at the neutral axis of the girder if the thickness of the web is less than
- (A) d/250
for structural steel
- (B) d/225
for high tensile steel
- (C) Both (a) and
(b)
- (D) Neither (a)
nor (b)
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