The most economical section for a column, is rectangular solid round flat strip

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Question
The most economical section for a column, is
Options
A. rectangular
B. solid round
C. flat strip
D. tubular section
E. hexagonal.

Correct Answer

tubular section

Steel Structure Design problems

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2. In a tension member if b is width of plate, t is thickness of plate, p is staggered pitch, g is gauge distance, n is number of rivet holes in zig-zag line, n is number of gauge spaces, d is gross diameter of rivets, then the net sectional area A_net of the plate, is
Options
A.
B.
C.
D.
E. none of these.

4. To keep the intensity of bearing pressure between the column base and concrete compressive and to vary from zero to , the ratio of the moment M to the axial load P should be
Options
A.
B.
C.
D.
E.

7. Pick up the correct statement from the following:
Options
A. When the gauge distance is larger than the pitch, the failure of the section may occur in a zig-zag line
B. When the gauge distance is smaller than the pitch, the failure of the section may occur in a straight right angle section through the centre of rivet holes
C. When the gauge distance and pitch are both equal, the failure to the section becomes more likely as the diameter of the holes increases
D. All the above.

10. 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).
Options
A. 4 mm
B. 6 mm
C. 8 mm
D. 10 mm

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