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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?
- a)1 only
- b)1 and 3
- c)2 and 4
- d)1, 2 and 4
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
Consider the following statements for the design of a laced column:1) ...
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.
Most Upvoted Answer
Consider the following statements for the design of a laced column:1) ...
Designing a Laced Column with Stipulations
Stipulations:
1. Single lacing systems on opposite planes shall preferably be in the same direction so that one is the shadow of the others
2. Lacing bar should be a flat section
3. The slenderness ratio of the lacing bars for compression shall not exceed 180.
4. Laced compression members are to be provided with tie plates at ends.
Correct observation:
The correct observation is option 'D', which includes stipulations 1 and 4.
Explanation:
1. Single lacing systems on opposite planes shall preferably be in the same direction so that one is the shadow of the others:
This stipulation means that the lacing bars should be arranged in the same direction on opposite planes of the column. This will create a shadow effect and improve the aesthetic appearance of the column. It also helps in easy inspection and maintenance of the column.
2. Lacing bar should be a flat section:
This stipulation specifies the shape of the lacing bars, which should be flat sections. This shape provides better connectivity between the bars and the column, resulting in improved load-bearing capacity and stiffness of the column.
3. The slenderness ratio of the lacing bars for compression shall not exceed 180:
This stipulation defines the maximum slenderness ratio of the lacing bars for compression. The slenderness ratio is the ratio of the length of the bar to its radius of gyration, which indicates the ability of the bar to resist buckling. A slenderness ratio of 180 ensures that the lacing bars can withstand compressive loads without buckling.
4. Laced compression members are to be provided with tie plates at ends:
This stipulation requires the use of tie plates at the ends of the laced compression members. Tie plates are used to transfer the compressive load from the lacing bars to the main column section. They also help to prevent the lacing bars from slipping out of position.
Conclusion:
In conclusion, the correct observation in designing a laced column is option 'D', which includes stipulations 1 and 4. These stipulations ensure the safety, stability, and durability of the column while maintaining its aesthetic appearance.
Stipulations:
1. Single lacing systems on opposite planes shall preferably be in the same direction so that one is the shadow of the others
2. Lacing bar should be a flat section
3. The slenderness ratio of the lacing bars for compression shall not exceed 180.
4. Laced compression members are to be provided with tie plates at ends.
Correct observation:
The correct observation is option 'D', which includes stipulations 1 and 4.
Explanation:
1. Single lacing systems on opposite planes shall preferably be in the same direction so that one is the shadow of the others:
This stipulation means that the lacing bars should be arranged in the same direction on opposite planes of the column. This will create a shadow effect and improve the aesthetic appearance of the column. It also helps in easy inspection and maintenance of the column.
2. Lacing bar should be a flat section:
This stipulation specifies the shape of the lacing bars, which should be flat sections. This shape provides better connectivity between the bars and the column, resulting in improved load-bearing capacity and stiffness of the column.
3. The slenderness ratio of the lacing bars for compression shall not exceed 180:
This stipulation defines the maximum slenderness ratio of the lacing bars for compression. The slenderness ratio is the ratio of the length of the bar to its radius of gyration, which indicates the ability of the bar to resist buckling. A slenderness ratio of 180 ensures that the lacing bars can withstand compressive loads without buckling.
4. Laced compression members are to be provided with tie plates at ends:
This stipulation requires the use of tie plates at the ends of the laced compression members. Tie plates are used to transfer the compressive load from the lacing bars to the main column section. They also help to prevent the lacing bars from slipping out of position.
Conclusion:
In conclusion, the correct observation in designing a laced column is option 'D', which includes stipulations 1 and 4. These stipulations ensure the safety, stability, and durability of the column while maintaining its aesthetic appearance.
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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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer?
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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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer?.
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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer?.
Solutions for 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Civil Engineering (CE).
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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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer?, a detailed solution for 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? has been provided alongside types of 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice 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 length3) The angle of inclination of the lacing bar should be less than 40° with the axis of the built-up column4) The lacing shall be designed for a transverse shear of 2.5% of the axial load on the columnWhich of the above statements are correct?a)1 onlyb)1 and 3c)2 and 4d)1, 2 and 4Correct answer is option 'D'. Can you explain this answer? tests, examples and also practice Civil Engineering (CE) tests.
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