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

Related Mcqs:

1. 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_________________?

   A. 0
   B. 0.5
   C. between 0.5 and 1.0
   D. 1.0

2. 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

3. The moment-curvature relation at a plastic hinge is________________?

   A. linear
   B. parabolic
   C. constant moment for all curvatures
   D. constant curvature for all moments

4. 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

5. The connection of intermediate vertical stiffeners to the web, not subjected to external loads, shall be designed for a minimum shear force (kN/m) of___________________?

   A. 75 t2/h
   B. 125 t3/h2
   C. 125 t2/h
   D. 175 t2/h

   where, t = the web thickness in mm
   h = the outstand of stiffener in mm

6. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate__________________?

   A. fully by direct bearing
   B. fully through fastenings
   C. 50% by direct bearing and 50% through fastenings
   D. 75% by direct bearing and 25% through fastenings

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. 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

9. The portal bracing in a truss bridge is used to_____________________?

   A. transfer load from top of end posts to bearings
   B. keep the rectangular shape of the bridge cross-section
   C. stiffen the structure laterally
   D. prevent the sidesway buckling of top chord

10. The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of’h’ is__________________?

    A. 10 m
    B. 20 m
    C. 25 m
    D. 50 m