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What is development length, Anchorage length and lap

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What is anchorage length?

How do I calculate development length of bar in

beam?

Why do we use development length in beam

reinforcement?

What is developmental length in civil?

Civil Engineering: Why is development length

provided in an RCC structure?

What is the difference between lap length and

development length in steel reinforcement?

What is the difference in concepts for Bond Strength

Check and Development Length Check in a simple

rectangular RCC beam?

Is there any difference in the calculation of anchorage

length and development length?

How does one calculate bend length and hook length

of steel bars in order to make BBS?

How do I find cutting length from total length in BBS?

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Lap length is the length of the overlap of bar required to safely transfer stress from one bar

to another. Lap length is different in case of tension andcompression zones and mainly

depends on grade of concrete and steel . If two different dia bars are to be lapped,lap

lengthis based on smaller dia .

Development length is the length of the bar required to transfer stress from steel to

concrete . According to IS456 ," the calculated tension or compression in any bar at any

section shall be developed on each side of the section by an appropriate development

length or by end anchorage or by a combination thereof".

Anchorage length is provided if sufficient development length can not be able to be

provided inside the support/fixed end . L value is generally considered as 8 times dia for a

90 degree bend while 6 times dia for a 135 degree bend and 4 times dia of bar for a 180

degree bend . In almost all cases, we use 90 degree bend.

Written Nov 22 View Upvotes

Siddhu J Siddhartha, Civil Engineer

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