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Civil Engineering
Design Of Steel Structures
Quiz 6
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Q.1
The portal bracing in a truss bridge is used to
Transfer load from top of end posts to bearings
Keep the rectangular shape of the bridge cross-section
Stiffen the structure laterally
Prevent the sides-way buckling of top chord
Q.2
As per IS :for the purposes of specifying basic wind velocity, the country has been divided into
4 zones
5 zones
6 zones
7 zones
Q.3
In case of timber structures, the simple bending formula M = fz may be applied for
rectangular beams up to 300 mm depth
all rectangular beams
solid circular beams only
all square cross-section beams
Q.4
Other conditions being same, the load factor in indeterminate structures is
Equal to load factor in determinate structures
More than the load factor in determinate structures
Less than the load factor in determinate structures
Unpredictable
Q.5
The allowable tensile stress in structural mild steel plates for steel tank is assumed as
95.0 MPa on net area
105.5 MPa on net area
105.5 MPa on gross area
150.0 MPa on gross area
Q.6
Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)
1.5 d
2.0 d
2.5 d
3.0 d
Q.7
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
0
0.5
between 0.5 and 1.0
1.0
Q.8
The external wind pressure acting on a roof depends on
degree of permeability of roof
slope of roof
both (a) and (b)
none of the above
Q.9
The slenderness ratio of a column supported throughout its length by a masonry wall is
zero
10
100
infinity
Q.10
The difference between gross diameter and nominal diameter for the rivets up tomm diameter is
1.0 mm
1.5 mm
2.0 mm
2.5 mm
Q.11
If the thickness of thinnest outside plate ismm, then the maximum pitch of rivets in tension will be taken as
120 mm
160 mm
200 mm
300 mm
Q.12
To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be
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2
3
4
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