The range of economical spacing of trusses varies from________________?

Related Mcqs:

1. Economical depth of a plate girder corresponds to_________________?

   A. minimum weight
   B. minimum depth
   C. maximum weight
   D. minimum thickness of web

2. 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

3. Minimum spacing of vertical stiffeners is limited to________________?

   A. d/4
   B. d/3
   C. d/2
   D. 2d/3

   where d is the distance between flange angles

4. By providing sufficient edge distance, which of the following failures of riveted joint can be avoided ?

   A. tension failure of the plate
   B. shear failure of the rivet
   C. shear failure of the plate
   D. crushing failure of the rivet

5. A butt weld is specified by__________________?

   A. effective throat thickness
   B. plate thickness
   C. size of weld
   D. penetration thickness

6. Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between____________________?

   A. 10° to 30°
   B. 30° to 40°
   C. 40° to 70°
   D. 90°

7. Maximum pitch of rivets, used in steel stacks, is limited to_______________?

   A. 6t
   B. 101
   C. 121
   D. 161
   where t is thickness of thinner plate being connected

8. As per IS:800, in the plastic design, which of the following pairs are correctly matched? Working Loads Load factor________________?

   (i) Dead load 1.7
   (ii) Dead Load + imposed load 1.7
   (iii) Dead load + load due to wind or 1.3 seismic forces
   (iv) Dead load + imposed load + load 1.7

   due to wind or seismic forces Of these statements

   A. (i) and (ii) are correct
   B. (i), (ii) and (iii) are correct
   C. (ii) and (iii) are correct
   D. only (i) is correct

9. In case of timber structures, the form factor for solid circular cross-section is taken as_________________?

   A. 1.18
   B. 1.414
   C. 1.67
   D. 1.81

10. The live load for a sloping roof with slope 15°, where access is not provided to roof, is taken as_______________?

    A. 0.65 kN/m2
    B. 0.75 kN/m2
    C. 1.35 kN/m2
    D. 1.50 kN/m2