Practice Test: Question Set - 08
1. For steel members exposed to weather and not accessible for repainting, the thickness of steel should not be less than
- (A) 4.5 mm
- (B) 6 mm
- (C) 8 mm
- (D) 10 mm
2. The slenderness ratio of a column supported throughout its length by a masonry wall is
- (A) Zero
- (B) 10
- (C) 100
- (D) Infinity
3. The main assumption of the method of simple design of steel frame work, is:
- (A) Beams
are simply supported
- (B) All
connections of beams, girders and trusses are virtually flexible
- (C) Members
in compression are subjected to forces applied at appropriate eccentricities
- (D) All the
above
4. Outstanding length of a compression member consisting of a channel, is measured as
- (A) Half of the
nominal width
- (B) Nominal
width of the section
- (C) From the
edge to the first row of rivets
- (D) None of
these
5. The use of tie plates in laced columns is
- (A) Prohibited
- (B) Not prohibited
- (C) Permitted at start and end of lacing system
only
- (D) Permitted between two parts of the lacing
6. According to IS : 800-1962 the permissible bending stress in steel slab plates, is
- (A) 1500 kg/cm2
- (B) 1420 kg/cm2
- (C) 2125 kg/cm2
- (D) 1890 kg/cm2
7. The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula
- (A) T = WL/4R
- (B) T = WR/8L
- (C) T = WL/8R
- (D) T = WL/2R
8. Intermediate vertical stiffeners in a plate girder need be provided if the depth of web exceeds
- (A) 50 t
- (B) 85 t
- (C) 200 t
- (D) 250 t
Where ‘t’ is thickness of web
9. The minimum pitch of rivet holes of diameter d should not be less than
- (A) d
- (B) 1.25 d
- (C) 1.5 d
- (D) 2.5 d
10. Design of a riveted joint, is based on the assumption:
- (A) Load
is uniformly distributed among all the rivets
- (B) Shear
stress on a rivet is uniformly distributed over its gross area
- (C) Bearing
stress in the rivet is neglected
- (D) All the
above
11. For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as
- (A) Zero
- (B) ± 0.2 p
- (C) ± 0.5 p
- (D) ± 0.7 p
Where ‘p’ is basic wind pressure
12. If ‘f’ is the maximum allowable bending stress in a tension member whose radius of gyration is ‘r’ and depth is 2y, the required cross sectional area ‘A’ is given by
- (A) A = My/fr2
- (B) A = My2/fr2
- (C) A = My/fr
- (D) A = My/f2r2
13. The load on a lintel is assumed as uniformly distributed if the height of the masonry above it, is up to a height of
- (A) The
effective span
- (B) 1.25 times
the effective span
- (C) 1.50 times
the effective span
- (D) 2.0 times
the effective span
14. Maximum pitch of rivets, used in steel stacks, is limited to
- (A) 6 t
- (B) 10 t
- (C) 12 t
- (D) 16 t
Where ‘t’ is thickness of thinner
plate being connected
15. Diameter of a rivet hole is made larger than the diameter of the rivet by
- (A) 1.0 mm for
rivet diameter upto 12 mm
- (B) 1.5
mm for rivet diameter exceeding 25 mm
- (C) 2.0 mm for
rivet diameter over 25 mm
- (D) None of
these
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