DESIGN OF STEEL STRUCTURE QUIZ

Generally the purlins are placed at the panel points so as to avoid

Deflection of rafter

Bending moment in rafter

Shear force in rafter

Axial force in rafter

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The elastic strain for steel is about

1/12 of strain at the initiation of strain hardening and about 1/120 of maximum strain

1/24 of strain at the initiation of strain hardening and about 1/200 of maximum strain

1/2 of strain at the initiation of strain hardening and about 1/12 of maximum strain

1/12 of strain at the initiation of strain hardening and 1/200 of maximum strain

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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

gives the maximum 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

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Normally, the angle of roof truss with asbestos sheets should not be less than

40°

26/2°

30°

35°

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When the bolts are subjected to reversal of stresses, the most suitable type of bolt is

black bolt

ordinary unfinished bolt

turned and fitted bolt

high strength bolt

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Hudson’s formula gives the dead weight of a truss bridge as a function of

heaviest axle load of engine

top chord area

bottom chord area

effective span of bridge

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Lug angles

are used to reduce the length of connection.

are unequal angles.

All listed here

increases shear lag.

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The use of tie plates in laced columns is

not prohibited

permitted at start and end of lacing system only

permitted between two parts of the lacing

prohibited

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The overlap of batten plates with the main members in welded connections should be more than (where t = thickness of the batten plate)

4t

6t

8t

3t

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

125 t2/h

175 t2/h

75 t2/h

125 t2/h

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