Why 47d is Calculate for Development Length | How to Calculate Development Length with Formula 

Why 47d is Calculate for Development Length | How to Calculate Development Length with Formula
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About This Video -------------------------------------------------------------------------------
In this video Er. Sudeep Kumar Agrawal, Corporate Trainer of Civil Guruji, is Explaining About Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
Why 47d is Calculate for Development Length How to Calculate Development Length with Formula If Development length values are not given in the structural drawing or If you’re designing the structure drawing for any construction work, then what must be the development length values you should use? In this article, you’ll learn How to calculate Development length using the Development length formula. Also, know how the data are extracted from Limit State Method for Deformed bars in tension and compression. And finally, get the tables of development length values Ld Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
A Development length can be defined as the amount of reinforcement (bar) length needed to be embedded or projected into the column to establish the desired bond strength between the concrete and steel (or any other two types of material)
When you open a structural Drawing- You Find Ld
Sometimes It may be-
Ld=30d
Ld =40d
Ld =50d
But the question is where it is coming from or where it is Derive From and Depends on which factors.
By the Thumb rule, these are taken in the site work as anything but that's not the correct way to take it, maybe failure occurs.
Because it depends upon both the Grade of Concrete and The type of Steel you use in the construction members. so we can't take the value of development length by guessing work. Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
All we know from this article.
Now to find the development length which is actually used in the construction site, IS 456:2000 will help you to find the Required Data-
For Formula to Calculate Development Length of Bar as per IS 456:2000
These are all data for Plain bars but we Generally use steels in the market or for House Construction are Deformed Bars.
For Design bond stress, go to IS 456:2000 Clause No - 26.2.1, you’ll find this Table
For Plain Bar (clause 26.2.1.1)-No Ribs in the Bars.
When you Purchase Bars from the Market, You get Bars with Ribs- Which are called Deformed Bars and we calculate Values for Those Bars. Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
But Before calculation, knowing all the important factors to be considered.
But Deformed bar calculation is not given in the IS Code but they have outlined two specifications. Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
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Why 47d is Calculate for Development Length How to Calculate Development Length with Formula
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