Q.1
The effect of racking forces is considered in the design of
i) lateral braces
ii) chord members
The correct answer is
Q.2
The heaviest I-section for same depth is
Q.3
The centrifugal force due to curvature of track is assumed to act on the bridge at a height of
Q.4
Bearing stiffener in a plate girder is used to
Q.5
The basic wind speed is specified at a height ‘h’ above mean ground level in an open terrain. The value of ’h’ is
Q.6
Lacing bars in a steel column should be designed to resist
Q.7
The bracing between two columns of a steel tank will be designed to resist
Q.8
Minimum pitch of the rivets shall not be less than (where d is gross diameter of rivet)
Q.9
Gantry girders are designed to resist
Q.10
In case of plastic design, the calculated maximum shear capacity of a beam as per IS:800 shall be (where, Aw = effective cross-sectional area resisting shear fy = yield stress of the steel)
Q.11
The forces acting on the web splice of a plate girder are
Q.12
If the thickness of thinnest outside plate is 10 mm, then the maximum pitch of rivets in tension will be taken as
Q.13
The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is
Q.14
The slenderness ratio of a column supported throughout its length by a masonry wall is
Q.15
The external wind pressure acting on a roof depends on
Q.16
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
Q.17
The actual thickness of butt weld as compared to the thickness of plate is usually
Q.18
A circular column section is generally not used in actual practice because
Q.19
Minimum pitch provided in riveted steel tanks is (where d is diameter of rivets)
Q.20
The allowable tensile stress in structural mild steel plates for steel tank is assumed as
Q.21
To minimize the total cost of a roof truss, the ratio of the cost of truss to the cost of purlins shall be
Q.22
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)
Q.23
Other conditions being same, the load factor in indeterminate structures is
Q.24
In case of timber structures, the simple bending formula M = fz may be applied for
Q.25
As per IS : 875, for the purposes of specifying basic wind velocity, the country has been divided into
Q.26
Diameter of a bolt hole is usually taken as
Q.27
Normally, the angle of roof truss with asbestos sheets should not be less than
Q.28
Pitch of tacking rivets, when double angles connected back to back and acting as tension members should not be more than
Q.29
Efficiency of a riveted joint, having the minimum pitch as per IS : 800, is
Q.30
The moment-curvature relation at a plastic hinge is
0 h : 0 m : 1 s