Discussion :: Steel Structure Design
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A beam may be designed as a cased beam if
A.
section is of double open channel form with the webs not less than 40 mm apart
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B.
overall depth and width of the steel section do not exceed 750 and 450 mm respectively.
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C.
beam is solidly encased in concrete with 10 mm aggregate having 28 days strength 160 kg/cm2
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D.
width of the solid casing is kept at least 100 mm more than the width of the steel flange and having a concrete cover of 50 mm
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E.
all the above.
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