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The bars shall NOT be lapped unless the length required exceeds ______ .
- a)the engineering specifications
- b)the maximum available length
- c)contractor requirements
- d)IS code requirements
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
The bars shall NOT be lapped unless the length required exceeds ______...
Lapping of Bars:
The lapping of bars is done to increase the height of the column. As the bars come in a specific size, hence to increase the length of the column, 2 or more bars needed to be joined together. Hence only the required length exceeds the available length. This is known as the lapping of bars.
Clause 26.2.5.1 of IS 456:2000 gives clear guidelines regarding the lap splices and their length and diameter.
Lap Length;
The lapping of bars is done to increase the height of the column. As the bars come in a specific size, hence to increase the length of the column, 2 or more bars needed to be joined together. Hence only the required length exceeds the available length. This is known as the lapping of bars.
Clause 26.2.5.1 of IS 456:2000 gives clear guidelines regarding the lap splices and their length and diameter.
Lap Length;
- For bars in flexural tension - Ld or 30 ϕ whichever is greater
- For bars in direct tension - 2Ld or 30 ϕ whichever is greater
- For a bar in compression - Ld or 24 ϕ whichever is greater
- Lap splices shall not be used for bars larger than the diameter of 36 mm
- For larger diameter bars the bars may be welded.
Additional Information
- According to 3rd amendment of IS 456: 2000 in 2007, the value was changed from 36 mm to 32 mm.
- So, 36 mm is an old provision and 32 mm is a new provision
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Community Answer
The bars shall NOT be lapped unless the length required exceeds ______...
Explanation:
When it comes to the lapping of reinforcement bars, there are certain guidelines and specifications that need to be followed. The lapping of bars is done to ensure the continuity of reinforcement along the length of the structure. However, there are limits to how much the bars can be lapped.
Engineering Specifications:
The engineering specifications provide guidelines for the design and construction of structures. These specifications may include requirements for the lapping of reinforcement bars. However, the length required for lapping should not exceed the engineering specifications. This means that the lapping length should not be longer than what is specified by the engineer.
Contractor Requirements:
The contractor may have specific requirements for the lapping of reinforcement bars. These requirements may be based on their experience and practices. However, the length required for lapping should not exceed the contractor requirements. This means that the lapping length should not be longer than what is specified by the contractor.
IS Code Requirements:
The Indian Standard (IS) code provides guidelines and specifications for various aspects of construction, including the lapping of reinforcement bars. The IS code may specify the minimum lapping length required for different bar sizes and types of structures. However, the length required for lapping should not exceed the IS code requirements. This means that the lapping length should not be longer than what is specified by the IS code.
Maximum Available Length:
The correct answer to the question is option 'B' - the maximum available length. This means that the lapping of reinforcement bars should only be done if the required length exceeds the maximum available length of the bars. In other words, if the length required for lapping is longer than the available length of the bars, then lapping can be done. However, if the available length of the bars is sufficient to meet the length requirements without lapping, then lapping should not be done.
In conclusion, the bars shall not be lapped unless the length required exceeds the maximum available length of the bars. Lapping should be done only when necessary and should comply with the relevant engineering specifications, contractor requirements, and IS code requirements.
When it comes to the lapping of reinforcement bars, there are certain guidelines and specifications that need to be followed. The lapping of bars is done to ensure the continuity of reinforcement along the length of the structure. However, there are limits to how much the bars can be lapped.
Engineering Specifications:
The engineering specifications provide guidelines for the design and construction of structures. These specifications may include requirements for the lapping of reinforcement bars. However, the length required for lapping should not exceed the engineering specifications. This means that the lapping length should not be longer than what is specified by the engineer.
Contractor Requirements:
The contractor may have specific requirements for the lapping of reinforcement bars. These requirements may be based on their experience and practices. However, the length required for lapping should not exceed the contractor requirements. This means that the lapping length should not be longer than what is specified by the contractor.
IS Code Requirements:
The Indian Standard (IS) code provides guidelines and specifications for various aspects of construction, including the lapping of reinforcement bars. The IS code may specify the minimum lapping length required for different bar sizes and types of structures. However, the length required for lapping should not exceed the IS code requirements. This means that the lapping length should not be longer than what is specified by the IS code.
Maximum Available Length:
The correct answer to the question is option 'B' - the maximum available length. This means that the lapping of reinforcement bars should only be done if the required length exceeds the maximum available length of the bars. In other words, if the length required for lapping is longer than the available length of the bars, then lapping can be done. However, if the available length of the bars is sufficient to meet the length requirements without lapping, then lapping should not be done.
In conclusion, the bars shall not be lapped unless the length required exceeds the maximum available length of the bars. Lapping should be done only when necessary and should comply with the relevant engineering specifications, contractor requirements, and IS code requirements.
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The bars shall NOT be lapped unless the length required exceeds ______ .a)the engineering specificationsb)the maximum available lengthc)contractor requirementsd)IS code requirementsCorrect answer is option 'B'. Can you explain this answer?
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