Steel Design Sheet 2
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1) Question.
The slenderness ratio of lacing bars should not exceed
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2) Question.
The effective length of a battened column is increased by
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3) Question.
Angle of inclination of the lacing bar with the longitudinal axis of the column should preferably be between
Answer.As per IS 800:2007 Clause- 7.6.4
Lacing bars, whether in double. or single systems, shall
be inclined at an angle not less than 40° nor more than
7(P to the axis of the built-up member. -
4) Question.
The use of tie plates in laced columns is
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5) Question.
Lacing bar in a steel column should be designed to resist
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6) Question.
The economical depth of a plate girder corresponds to
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7) Question.
If the 20 mm rivets are used in lacing bars, then the minimum width of lacing bar should be
Answer.3d= 3x 20= 60 mm
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8) Question.
Net sectional area of a tension member, is equal to its gross section area
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9) Question.
For the steel member exposed to weather and accessible for repainting, the thickness of steel should not be less than (excepting the webs of Indian Standard rolled steel joists and channels).
Answer.With paint 6 mm.
Without paint 8 mm. -
10) Question.
The allowable stress in axial tension for rolled I-sections and channels, is taken as (Kg/ sq cm)
Answer.