## Design of Steel Structure Hudson’s formula gives the dead weight of a truss bridge as a function of

top chord area
effective span of bridge
bottom chord area

## Design of Steel Structure The bracing provided in the plane of end posts is called

sway bracing
bottom lateral bracing
portal bracing
top lateral bracing

3.0 d
2.0 d
1.5 d
2.5 d

## Design of Steel Structure When the axis of load lies in the plane of rivet group, then the most heavily loaded rivet will be the one which (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.)

gives the minimum angle between the two forces Fa and Fm
is at the maximum distance from CG of the rivet group
is at the minimum distance from CG of the rivet group
gives the maximum angle between the two forces Fa and Fm

## Design of Steel Structure The centrifugal force due to curvature of track is assumed to act on the bridge at a height of

1.50 m above the rail level
2.13 m above the rail level
1.23 m above the rail level
1.83 m above the rail level

200 t
250 t
50 t
85 t