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A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column are
- a)1.0 and 1.0
- b)1.2 and 1.0
- c)1.2 and 1.2
- d)1.0 and 1.2
Correct answer is option 'D'. Can you explain this answer?
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A steel column is restrained against both translation and rotation at ...
Effective Length Factor of a Column
The effective length factor of a column is a parameter used in the design of steel columns to account for the actual behavior of the column under load. It takes into consideration the end conditions of the column and determines the effective length of the column for buckling analysis.
Given End Conditions
In this case, the steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. This means that one end of the column is completely fixed, preventing any movement in both translation and rotation, while the other end is only fixed against rotation but allows for translation.
Theoretical Effective Length Factor
The theoretical effective length factor of a column depends on its end conditions. For a column fixed against both translation and rotation at one end and free to translate and rotate at the other end, the theoretical effective length factor is 1.0. This means that the column is considered to be fully restrained against buckling in both directions.
Design Effective Length Factor
In practical design, the theoretical effective length factor is often modified to account for imperfections in the actual behavior of the column. The design effective length factor is determined based on the recommendations given in the relevant design code, in this case, IS: 800 - 2007.
According to IS: 800 - 2007, for a column restrained against both translation and rotation at one end and restrained only against rotation at the other end, the design effective length factor is 1.2. This means that the column is considered to be partially restrained against buckling in both directions, and the effective length for buckling analysis is increased by a factor of 1.2.
Conclusion
Therefore, the theoretical effective length factor of the column is 1.0, while the design effective length factor based on IS: 800 - 2007 is 1.2. The correct answer is option 'D', which states that the theoretical and design values of the effective length factor of the column are 1.0 and 1.2, respectively.
The effective length factor of a column is a parameter used in the design of steel columns to account for the actual behavior of the column under load. It takes into consideration the end conditions of the column and determines the effective length of the column for buckling analysis.
Given End Conditions
In this case, the steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. This means that one end of the column is completely fixed, preventing any movement in both translation and rotation, while the other end is only fixed against rotation but allows for translation.
Theoretical Effective Length Factor
The theoretical effective length factor of a column depends on its end conditions. For a column fixed against both translation and rotation at one end and free to translate and rotate at the other end, the theoretical effective length factor is 1.0. This means that the column is considered to be fully restrained against buckling in both directions.
Design Effective Length Factor
In practical design, the theoretical effective length factor is often modified to account for imperfections in the actual behavior of the column. The design effective length factor is determined based on the recommendations given in the relevant design code, in this case, IS: 800 - 2007.
According to IS: 800 - 2007, for a column restrained against both translation and rotation at one end and restrained only against rotation at the other end, the design effective length factor is 1.2. This means that the column is considered to be partially restrained against buckling in both directions, and the effective length for buckling analysis is increased by a factor of 1.2.
Conclusion
Therefore, the theoretical effective length factor of the column is 1.0, while the design effective length factor based on IS: 800 - 2007 is 1.2. The correct answer is option 'D', which states that the theoretical and design values of the effective length factor of the column are 1.0 and 1.2, respectively.
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Community Answer
A steel column is restrained against both translation and rotation at ...
As per IS:800-2007
For column, restrained against both rotation and transalation at one end and restrained only against rotation but free to translate at other end
Theoretical value of effective length factor = 1.0
Design value of effective length factor = 1.2
For column, restrained against both rotation and transalation at one end and restrained only against rotation but free to translate at other end
Theoretical value of effective length factor = 1.0
Design value of effective length factor = 1.2
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A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct answer is option 'D'. Can you explain this answer?
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A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct 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 A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct 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 A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct answer is option 'D'. Can you explain this answer?.
A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct 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 A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct 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 A steel column is restrained against both translation and rotation at one end and is restrained only against rotation but free to translate at the other end. Theoretical and design (IS: 800 - 2007) values, respectively, of effective length factor of the column area)1.0 and 1.0b)1.2 and 1.0c)1.2 and 1.2d)1.0 and 1.2Correct answer is option 'D'. Can you explain this answer?.
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