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Bar Bending Schedule

Introduction

Bar bending schedule is a means to calculate the exact quantity of reinforcements required in a structure. It is helpful for any concrete work to know exact amount of cement, aggregate or sand required for a structure. It is referred to as BBS in short form. It involves calculating development length, diameter of bars to be used, stirrups, cutting length, crank length, and many more. It is a process of cutting and bending reinforcement bars into desired shape and size as per structural drawing. These drawings are handed by structural engineers for various structural elements like footing, column, beam, slab, etc. and then handed over to contractors for the execution of the work at site by the labors. The contractor must understand in depth before portraying it to the labors. BBS is necessary to the contractor as it is important in bidding for tenders. All these works play an important role without which work can’t proceed.

Advantages
Some of the advantages of BBS are –

How to prepare?
Given below are the steps for preparation of BBS –

Precautions
It is important to keep in mind the following points as some mistakes are common in BBS which costs a lot of money to the clients. Some of them are –

Conclusion
Bar bending schedule plays an important role in civil engineering and it is considered an important tool in building a structure. Any changes made in the bar bending schedule is accompanied by changes in contract regarding cost and project management. It directly links the project management and execution time in the field or site of construction. Any error in this will affect time, costs and manpower so it is advised to carefully calculate the quantity in order to avoid any mistakes in calculations. Also, it is advised to follow the respective country’s codes to avoid any confusion like in India it should be followed as per IS code and so every country will follow different formula and method.

References

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Kanwarjot Singh

Kanwarjot Singh is the founder of Civil Engineering Portal, a leading civil engineering website which has been awarded as the best online publication by CIDC. He did his BE civil from Thapar University, Patiala and has been working on this website with his team of Civil Engineers.

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