Diff Between development Length and Lapping lenth
Development length (Ld)
“ The embeded
length in concrete is called development length”
The minimum length
of steel bars necessary on either side of section to develope bond is
called as development length "
formula for finding
Ld from IS Code
As per IS
456-2000Clause:26.2.1
For LSM
Development length= (0.87 fy Ø)/(4τbd)
Ø= nominal diameter of the bar, fy : grade of steel
τbd = design bond stress given in 2.6.2.1.1.
Note – For Hysd
steel bars increase values by 60%
How Much Ld provided
beam and slab –
48d
Column – 60d
Overlapping length
“The lap of bar needed ti transfer stresses to onther bars
ie means the available size of steel bars in market is 12 meter , if we have maximum span in beam , column and slab etc then we have to use two bars . That is required suffiecient length for transfering of stresses from one bar to onther is called lapping length
lapping length
beams and slab- 60d
columns – 45d
I was recommended this web site by my cousin. I am not sure whether this post is written by him as no one else know such detailed about my problem. You are amazing! Thanks! Alex Shcolyar
ReplyDeleteYour website is very informative and Articles are very good.
ReplyDeleteBilling Engineering Course
ReplyDeleteWow, excellent post. I'd like to draft like this too. And I am also super excited to share the latest Blog we have that will help you with the cheapest way where you can easily understand ESSENTIAL CONCEPTS RELATED TO ENGINEERING STUDIES