Lacing bars in a steel column should be designed to resist
A. Bending moment due to 2.5% of the column load
B. Shear force due to 2.5% of the column load
C. 2.5% of the column load
D. Both (A) and (B)
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The bracing between two columns of a steel tank will be designed to resist
A. Horizontal shear due to wind or earthquake only
B. Horizontal, shear due to wind or earthquake + 2.5% of column loads
C. Column loads + 2.5% of horizontal shear due to wind or earthquake
D. Column loads + full horizontal shear due to wind or earthquake
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Gantry girders are designed to resist
A. Lateral loads
B. Longitudinal loads and vertical loads
C. Lateral, longitudinal and vertical loads
D. Lateral and longitudinal loads
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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)
A. 0.55 Aw fy
B. 0.65 Aw fy
C. 0.75 Aw fy
D. 0.85 Aw fy
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As per IS : 800, for compression flange, the outstand of flange plates should not exceed (where t = thickness of thinnest flange plate)
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The heaviest I-section for same depth is
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The centrifugal force due to curvature of track is assumed to act on the bridge at a height of
A. 1.23 m above the rail level
B. 1.50 m above the rail level
C. 1.83 m above the rail level
D. 2.13 m above the rail level
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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
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The basic wind speed is specified at a height 'h' above mean ground level in an open terrain. The value of 'h' is
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Minimum pitch of the rivets shall not be less than (where d is gross diameter of rivet)
A. 1.5 d
B. 2.0 d
C. 2.5 d
D. 3.0 d
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For the buildings having a low permeability, the internal wind pressure acting normal to the wall and roof surfaces is taken as (where p is basic wind pressure)
A. Zero
B. ±0.2p
C. ±0.5p
D. ±0.7p
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The sway bracing is designed to transfer
A. 20% of the top panel wind load to bottom bracing
B. 10% of the top panel wind load to bottom bracing
C. 25% of the top panel wind load to bottom bracing
D. 50% of the top panel wind load to bottom bracing
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The internal pressure coefficient on walls for buildings with large permeability is taken as
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The relation between intensity of wind pressure P and velocity of wind V is taken as
A. P ∝ V
B. P ∝ V 2
C. P ∝ V 1
D. P ∝ V 2 1
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If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
A. 40 mm
B. 60 mm
C. 80 mm
D. 100 mm
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Steel tanks are mainly designed for
A. Weight of tank
B. Wind pressure
C. Water pressure
D. Earthquake forces
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The minimum thickness of plates in a steel stack should be
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The shape factor of an isosceles triangle for bending about the axis parallel to the base is:
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Which of the following conditions is to be satisfied both in elastic and plastic analysis?
A. Equilibrium condition
B. Yield condition
C. Plastic moment condition
D. Mechanism condition
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Bending compressive and tensile stresses respectively are calculated based on
A. Net area and gross area
B. Gross area and net area
C. Net area in both cases
D. Gross area in both cases
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