If a pair of angles placed back to back in tension are connected by one leg of e

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If a pair of angles placed back to back in tension are connected by one leg of each angle, the net effective area of the section, is
Options
A.
B.
C.
D.
E. none of these.

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Steel Structure Design problems

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1. On eccentrically loaded columns, the equivalent axial load may be obtained by
Options
A. adding the axial load, eccentric load, the product of the bending moment due to eccentric load and the appropriate bending factor
B. adding the axial load and eccentric load and subtracting the product of bending moment and appropriate bending factor
C. dividing the sum of axial load and eccentric load by the product of the bending moment and appropirate bending factor
D. none of these.

2. Allowable working stress corresponding to the slenderness ratio of double angles placed back to back and connected to one side of a gusset plate, is reduced to
Options
A. 50%
B. 60%
C. 70%
D. 80%
E. 40%

3. The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and channels on the effective section, is
Options
A. 1500 kg/cm²
B. 1420 kg/cm²
C. 1650 kg/cm²
D. 2285 kg/cm²

5. Assuming the values of maximum deviation ?P and ?E to be 25% of the computed value of P and E respectively, the minimum value of the factor of safety is
Options
A. 1.00
B. 0.67
C. 1.67
D. 2.67
E. none of these.

6. The effective length of a double angle strut with angles placed back to back and connected to both the sides of a gusset plate, by not less than two rivets, is
Options
A. 0.5 L
B. 0.67 L
C. 0.85 L
D. L
E. 2 L

10. 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
Options
A. l = 0.7L
B. l = 0.75L
C. l = 0.85L
D. l = 0.5L
E. l = L

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