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Bar Bending Shape Codes – Bar Bending Schedule Formula

What Is Bar Bending Schedule?

Bar bending schedule or BBS is a list of reinforcement bars in tabular form which provides bar mark, bar shape, bar dia, dimension of bending of the bar, length of bar, weight of bar etc. There are different kinds of bar shapes are used in reinforcement. The reinforcement design depends on the load calculation. From bbs reinforcement of different bar sizes are calculated, then bars are cut and bent appropriately at site. In this article, I will discuss different bar bending shape codes used to prepare bar bending schedule.


Why Calculating of Bar Schedule?

A requirement of steel in the project.

Labor cost.

Project monitoring.

Material reconciliation.

Contol of Wastage in steel etc.

Bar Bending Shape Codes:

For small projects, we generally use thumb rules for reinforcement calculation. But for large scale project bar bending schedule is prepared by using bar bending shape codes to avoid unnecessary wastages. It also makes easier to cut the steel bar for the reinforcement as per the design.

Bar Bending Shape Codes As Per BS 8666:2005

Different bar bending shaped codes are listed below.

Where L = Total length of the bar

bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
bar bending shape codes
Minimum Scheduling Radius, Diameter And Bend Allowance:
Nominal size of bar, d, mmMinimum radius for scheduling, rMinimum diameter of bending formerGeneral (min 5d straight), including links where bend ≥ 150° mmLinks where bend ≤ 150° (min 10d straight) mm
61224110*110*
81632115*115*
102040120*130
122448125*160
163264130210
2070140190290
2587175240365
32112224305465
40140280380580
50175350475725

6 mm, 8mm and 50 mm are non preferred sizes available to special order.

Happy Learning.



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