Factor of safety is the ratio of yield stress to working stress tensile stress t

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yield stress to working stress

Steel Structure Design problems

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1. Diameter of a rivet hole is made larger than the diameter of the rivet by
Options
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.

2. The permissible stress to which a structural member can be subjected to, is known as
Options
A. bearing stress
B. working stress
C. tensile stress
D. compressive stress
E. all the above.

3. To keep the intensity of bearing pressure between the column base and concrete, compressive throughout the length of the column base, the ratio of the moment M to axial load P should be
Options
A.
B.
C.
D.
E.

4. For a steel member of slenderness ratio 350, the allowable stress is 76 kg/cm² if it is
Options
A. HTW grade of thickness exceeding 32 mm
B. HT grade of thickness exceeding 45 mm
C. HT grade of thickness not exceeding 45 mm
D. All the above.

8. IS : 800 - 1971 recommends that in a splice plate the number of rivets carrying calculated shear stress through a packing greater than 6 mm thick, is to be increased by 2.5% for every
Options
A. 1.00 mm thickness of packing
B. 1.50 mm thickness of packing
C. 2.0 mm thickness of packing
D. 2.50 mm thickness of packing
E. 3.0 mm thickness of packing.

9. Effective sectional area of a compression member is :
Options
A. gross sectional area - area of rivet hole
B. gross sectional ares + area of rivet hole
C. gross sectional ares x area of rivet hole
D. gross sectional ares + area of rivet hole.

10. A single angle in tension is connected by one leg only. If the areas of connecting and outstanding legs are respectively a and b, net effective area of the angle, is
Options
A.
B.
C.
D.
E. none of these.

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