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Test: Compression Members- 2 - Civil Engineering (CE) MCQ


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10 Questions MCQ Test GATE Civil Engineering (CE) 2025 Mock Test Series - Test: Compression Members- 2

Test: Compression Members- 2 for Civil Engineering (CE) 2024 is part of GATE Civil Engineering (CE) 2025 Mock Test Series preparation. The Test: Compression Members- 2 questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Compression Members- 2 MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Compression Members- 2 below.
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Test: Compression Members- 2 - Question 1

Which one of the following values represents the maximum slenderness ratio of any connection member which normally acts as a tie in a roof truss but can be subjected to possible reversal of stresses from the action of wind or seismic force?

Test: Compression Members- 2 - Question 2

The permissible bending stress in slab base is (fy = 250 N/mm2)

Test: Compression Members- 2 - Question 3

Consider the following statements for the design of a laced column:

1) In a bolted construction, the minimum width of the lacing bar shall be three times the nominal diameter of the end bolt.

2) The thickness of the flat of a single lacing system shall be not less than one-fortieth of its effective length

3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column

4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the column

Which of the above statements are correct?

Detailed Solution for Test: Compression Members- 2 - Question 3

Correct Option is D.

For the design of laced columns:

I) The sections to be laced are so spaced that the radius of gyration of the section about the axis perpendicular to the plane of lacing is not less than the radius of gyration about the axis in the plane of lacing.

II) The effective slenderness ratio should be taken as 1.05 times the actual maximum slenderness ratio, in order to account for shear deformation effect.

III) Angle of inclination of the lacing bar should be kept between 40° - 70°. Lacing is most efficient between 35° to 45°, but angle less than 40° would result in a higher length of lacing bar which may then to buckle individually.

IV) The maximum spacing of the lacing bar should be such that the minimum slenderness ratio of the component member should not be greater than 50 or 0.7 times the slenderness ratio of the member.

V) The lacing for compression members should be proportioned to resist transverse shear equal to 2.5% of the axial force in the column.

VI) The minimum flat width should not be less than three times the nominal diameter of the end connector.

VII) The thickness of the lacing flat for a single lacing system should be less than 1/40 of its effective length and for a double lacing system, it should be less than 1/60 of its effective length.

VIII) The slenderness ratio of the lacing bar should be less than 145.

X) The effective length of lacing bar is the length between the inner end rivets/bolts for a single lacing system and 0.7 times this distance for a double lacing system.

Test: Compression Members- 2 - Question 4

Slenderness ratio for single angle single riveted strut should be less than

Test: Compression Members- 2 - Question 5

In ISMC 400 channels placed back to back at a spacing of 26 cm carry an axial load of 160 tonnes. The lacing system should be designed to resist a transverse shear of

Detailed Solution for Test: Compression Members- 2 - Question 5

The lacing system is designed for a load which is 2.5% of the axial load i.e.,

Test: Compression Members- 2 - Question 6

The thickness of lacing bars for single lacing, system should not be less than

where l = length between the inner end of connections.

Detailed Solution for Test: Compression Members- 2 - Question 6

Minimum thickness of lacing bars, 
  for single lacing 
  for double lacing riveted or welded at intersection.

Test: Compression Members- 2 - Question 7

Which of the following is not a compression member?

Detailed Solution for Test: Compression Members- 2 - Question 7

Strut is a compression member used in the roof truss and bracing.
Rafter or principal rafter is a top chord member in a roof truss.
Boom is the principal compression member in a crane.
Tie rods are sag rods provided at the crown of truss used in industrial sheds. These cut as tension members and resist the tangential components from the two sides of roof truss.

Test: Compression Members- 2 - Question 8

Permitted maximum slenderness ratio of a steel, column under dead load and live load is

Detailed Solution for Test: Compression Members- 2 - Question 8

Test: Compression Members- 2 - Question 9

Two ISMC 400 are placed back to back at a spacing of 300 mm and carry an axial ioad.of 160 kN. As per IS : 800 1984 its lacing system should be designed to resist a transverse shear of

Detailed Solution for Test: Compression Members- 2 - Question 9

Lacing is designed to resist a transverse shear of V = 2.5% of axial force in the member,

Test: Compression Members- 2 - Question 10

Slenderness ratio of the splices for compression members is

Detailed Solution for Test: Compression Members- 2 - Question 10

Splices used in compression members are assumed to act as short columns with zero slender ness ratio.

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