Question

Which of the following is not true?

(a) spacing of tack bolt should be less than 600mm

(b) spacing of tack bolt should be greater than 600mm

(c) if bolts are used, they should be spaced longitudinally at less than 4 times the bolt diameter

(d) connection should extend at least 1.5 times the width of the member

The question was posed to me in unit test.

This interesting question is from Back-to-Back Connection topic in chapter Design of Compression Members of Design of Steel Structures

Answer 1

Right answer is (b) spacing of tack bolt should be greater than 600mm

To elaborate: Spacing of tack bolt should be less than 600mm. If bolts are used, they should be spaced longitudinally at less than 4 times the bolt diameter. Connection should extend at least 1.5 times the width of the member.