Question

Which of the following condition should be satisfied for spacing of lacings?

(a) maximum slenderness ratio of component of main members between two consecutive lacing connection should be greater than 50

(b) maximum slenderness ratio of component of main members between two consecutive lacing connection should be not greater than 50

(c) maximum slenderness ratio of component of main members between two consecutive lacing connection should be more than 0.7 x most unfavourable slenderness ratio of combined column

(d) maximum slenderness ratio of component of main members between two consecutive lacing connection should not be more than 0.9 x most unfavourable slenderness ratio of combined column

The question was asked in exam.

The query is from Lacings topic in section Design of Compression Members of Design of Steel Structures

Answer 1

Correct choice is (b) maximum slenderness ratio of component of main members between two consecutive lacing connection should be not greater than 50

Easy explanation: The spacing of lacing bars should be such that maximum slenderness ratio of component of main members between two consecutive lacing connection is not greater than 50. It should not be greater than 0.7 times most unfavourable slenderness ratio of combined column.