Steel Structures Objective type Questions with Answers pdf - Set 18 - ObjectiveBooks
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# Practice Test: Question Set - 18

1. The web crippling due to excessive bearing stress can be avoided by
(A) Increasing the web thickness
(B) Providing suitable stiffeners
(C) Increasing the length of the bearing plates
(D) None of the above

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
(A) 50 %
(B) 60 %
(C) 70 %
(D) 80 %

3. The number of seismic zones in which the country has been divided is
(A) 3
(B) 5
(C) 6
(D) 7

4. The critical stress on a column for elastic buckling given by Euler's formula, is
(A) fc = π2E/(I/r)2
(B) fc = (I/r) 2/ πE
(C) fc = (I/r)/ πE
(D) fc = π2E/(I/r)

(A) Always equal to factor of safety
(B) Always less than factor of safety
(C) Always greater than factor of safety
(D) Sometimes greater than factor of safety

6. When a tension member is made of four angles with a plate as a web, the allowance for holes is made as
(A) Two holes for each angle and one hole for the web
(B) One hole for each angle and one hole for the web
(C) One hole for each angle and two holes for the web
(D) Two holes for each angle and two holes for the web

7. The effective length of a battened column is increased by
(A) 5 %
(B) 10 %
(C) 15 %
(D) 20 %

8. To keep the intensity of bearing pressure between the column base and concrete compressive and to vary from zero to 2P/BL, the ratio of the moment M to the axial load P should be
(A) L/2
(B) L/3
(C) L/4
(D) L/6

9. Minimum pitch provided in riveted steel tanks is
(A) 1.5 d
(B) 2.0 d
(C) 2.5 d
(D) 3.0 d
Where d is diameter of rivets

10. The spans are considered approximately equal if the longest span does not exceed the shortest span by more than
(A) 5 %
(B) 10 %
(C) 15 %
(D) 20 %

11. The mechanism method and the statical method give
(A) Lower and upper bounds respectively on the strength of structure
(B) Upper and lower bounds respectively on the strength of structure
(C) Lower bound on the strength of structure
(D) Upper bound on the strength of structure

12. When two plates are placed end to end and are joined by two cover plates, the joint is known as
(A) Lap joint
(B) Butt joint
(C) Chain riveted lap joint
(D) Double cover butt joint

13. For a standard 45° fillet, the ratio of size of fillet to throat thickness is
(A) 1 : 1
(B) 1 : √2
(C) √2 : 1
(D) 2 : 1

14. The strength of a riveted lap joint is equal to its
(A) Shearing strength
(B) Bearing strength
(C) Tearing strength
(D) Least of (a), (b) and (c)

15. The maximum spacing of vertical stiffeners is
(A) 1.33 d
(B) 1.25 d
(C) 1.5 d
(D) 1.75 d
Where ‘d’ is the distance between flange angles

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