# 250+ TOP MCQs on Design of Compression Members – I and Answers

Design of Steel Structures Multiple Choice Questions on “Design of Compression Members – I”.

1. A column that can support same load in compression as it can in tension is called
a) intermediate column
b) long column
c) short column
d) cannot be determined
Clarification: A column that can support same load in compression as it can in tension is called short column. Short column usually fail by crushing.

2. The strength of compression members subjected to axial compression is defined by curves corresponding to _______ classes
a) a, b, c and d
b) a, d
c) b, e, f
d) e, f, g
Clarification: The strength of compression members subjected to axial compression is defined by curves corresponding to a, b, c and d classes. The value of imperfection factor depends on type of buckling curve.

3. Which of the following is not a compression member?
a) strut
b) boom
c) tie
d) rafter
Clarification: Strut, boom and rafter are compression members, whereas tie is a tension member.

4. The best compression member section generally used is
a) single angle section
b) I-section
c) double angle section
d) channel section
Clarification: Generally, ISHB sections are used as compression members.

5. The best double-angle compression member section is
a) unequal angles with short leg connected
b) unequal angles with long leg connected
c) unequal angles on opposite side of gusset plate
d) unequal angles on same side of gusset plate
Clarification: Unequal angles with short leg connected are preferred as compression member section.

6. The flange is classified as semi-compact if outstand element of compression flange of rolled section is less than
a) 8.4ε
b) 10.5ε
c) 15.7ε
d) 9.4ε
Clarification: The flange is classified as semi-compact if outstand element of compression flange of rolled section is less than 15.7ε and for a welded section, less than 13.6ε.

7. The flange is classified as plastic if outstand element of compression flange of rolled section is less than
a) 8.4ε
b) 9.4ε
c) 10.5ε
d) 15.7ε
Clarification: The flange is classified as plastic if outstand element of compression flange of rolled section is less than 9.4ε and for a welded section, less than 8.4ε.

8. The outstand element of compression flange of a rolled section is 10.2 (ε=1). The flange will be classified as
a) compact
b) plastic
c) semi-compact
d) slender