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.Management Sciences
Category: Design of Steel Structures
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
Economical depth of a plate girder corresponds to_________________?
A. minimum weight
B. minimum depth
C. maximum weight
D. minimum thickness of web
According to IS Specifications, the maximum pitch of rivets in compression is_____________________?
A. lesser of 200 mm and 12 t
B. lesser of 200 mm and 161
C. lesser of 300 mm and 32 t
D. lesser of 3 00 mm and 24 t
where t is thickness of thinnest outside plate or angle
Which of the following types of riveted joint is free from bending stresses ?
A. lap joint
B. butt joint with single cover plate
C. butt joint with double cover plates
D. none of the above
Load factor is____________________?
A. always equal to factor of safety
B. always less than factor of safety
C. always greater than factor of safety
D. sometimes greater than factor of safety
The slenderness ratio of a column supported throughout its length by a masonry wall is________________?
A. zero
B. 10
C. 100
D. infinity
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
Bearing stiffener in a plate girder is used to__________________?
A. transfer the load from the top flange to the bottom one
B. prevent buckling of web
C. decrease the effective depth of web
D. prevent excessive deflection
If the thickness of plate to be connected by a rivet is 16 mm, then suitable size of rivet as per Unwin’s formula will be__________________?
A. 16 mm
B. 20 mm
C. 24 mm
D. 27 mm
Generally the purlins are placed at the panel points so as to avoid__________________?
A. axial force in rafter
B. shear force in rafter
C. deflection of rafter
D. bending moment in rafter
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