If the loaded length of span in meters of a railway steel bridge carrying a single track is 6 m, then impact factor is taken as_________________?

Related Mcqs:

1. 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

2. The centrifugal force due to curvature of track is assumed to act on the bridge at a height of___________________?

   A. 1.23 m above the rail level
   B. 1.50 m above the rail level
   C. 1.83 m above the rail level
   D. 2.13 m above the rail level

3. If the floor is supported at or near the bottom but top chords of a bridge are not braced, then the bridge is called________________?

   A. deck type
   B. through type
   C. half through type
   D. double deck type

4. When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which________________?

   A. is at the maximum distance from CG of the rivet group
   B. is at the minimum distance from CG of the rivet group
   C. gives the maximum angle between the two forces Fa and Fm
   D. gives the minimum angle between the two forces Fa and Fm

   where, Fa is the load shared by each rivet due to axial load and Fm is the shearing load due to moment in any rivet

5. The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as________________?

   A. 1.8 L
   B. L
   C. 1.1 L
   D. 1.5 L

6. According to IS Specifications, the effective length of a column effectively held in position at both ends and restrained in direction at one end is taken as________________?

   A. 0.67 L
   B. 0.8 L
   C. L
   D. 1.5 L

7. 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

8. The maximum permissible span of asbestos cement sheets is______________________?

   A. 650 mm
   B. 810 mm
   C. 1250 mm
   D. 1680 mm

9. Hudson’s formula gives the dead weight of a truss bridge as a function of_________________?

   A. bottom chord area
   B. top chord area
   C. effective span of bridge
   D. heaviest axle load of engine

10. compression force in two end posts The pin of a rocker bearing in a bridge is designed for_________________?

    A. bearing and shear
    B. bending and shear
    C. bearing and bending
    D. bearing, shear and bending