# Important Questions on Design of Steel Structures – Set 12

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(A) 10 m
(B) 20 m
(C) 25 m
(D) 50 m

## Q2. When the axis of load lies in the plane of rivet group, then the rivets are subjected to

(A) Only shear stresses
(B) Only tensile stresses
(C) Both (A) and (B)
(D) None of the above

(A) 4 mm
(B) 5 mm
(C) 6 mm
(D) 8 mm

(A) d
(B) 1.25 d
(C) 1.5 d
(D) 1.75 d

## Q5. For double angles carrying tension, placed back to back and connected to either side of the gusset plate, the sectional area of the section, is equal to cross sectional area of

(A) The section
(B) The section plus area of rivet holes
(C) The section minus area of rivet holes
(D) The section multiplied by the area of the rivet hole

Answer: (C) The section minus area of rivet holes

## Q6. 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

(A) < L/3 (B) < L/6(C) > L/3
(D) > L/6

## Q7. 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

Answer: (B) 1.25 d but not less than 0.33 d

## Q8. The beam outside a wall up to floor level above it, is known as

(A) Rafter
(B) Purlin
(C) Spandrel beam
(D) Lintel

## Q9. A structural member subjected to tensile force in a direction parallel to its longitudinal axis, is generally known as

(A) A tie
(B) A tie member
(C) A tension member
(D) All the above

## Q10. 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

Answer:(B) 105.5 MPa on net area

## Q11. In the cross-section of a weld, throat is the

(A) Minimum dimension
(B) Average dimension
(C) Maximum dimension
(D) None of the above

## Q12. In the cross-section of a weld, throat is the

(A) Minimum dimension
(B) Average dimension
(C) Maximum dimension
(D) None of the above

## Q13. 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)

Answer: (C) Both (a) and (b)

## Q14. The rivets which are heated and then driven in the field, are known

(A) Power driven shop rivets
(B) Power driven field rivets
(C) Hand driven rivets
(D) Cold driven rivets

Answer: (B) Power driven field rivets

(A) d = 1.91 t
(B) d = 1.91 t2
(C) d = 1.91 √t
(D) d = 1.91 ∛t