barbendingshedule

BAR BENDING SCHEDULE

Bar bending schedule (or schedule of bars) is a list of reinforcement bars for a given reinforced concrete works item, and is presented in a tabular form for easy visual reference.

Table of bar bending schedule summarizes all the needed particulars of bars – diameter, shape of bending, length of each bent and straight portions, angles of bending, total length of each bar, and number of each type of bar. This information is a great help in preparing an estimate of quantities

Introduction to Bar Bending Schedule [BBS]:

“BBS” The word BBS Plays a significant role in any construction of High rise buildings. BBS refers to Bar Bending Schedule. Well, What’s the use of BBS? Why we use BBS?

BBS is termed as Calculation of Steel required for the construction of a building. We use steel to make concrete to be reinforced and for tension requirements. But how much steel required for constructing 15 floors building?? How much Steel I have to order? All these questions are answered in BBS.

Well, from 1950 to 2017 lots of modifications and enhancements happening in our world. At that time three storied buildings are high rise buildings now we are constructing a building with 200 floors+. There is a massive growth in construction. More population, more need of facilities, more need of space, more construction.

How BBS Changed from 1950-2000:

Father of Estimation B.N. Data has given certain recommendations for the usage of steel (bar bending schedule) in different components of buildings. But, he didn’t mention any values if we use more bars in a single element.

Advantages of Bar Bending Schedule

Bar bending schedule provides details of reinforcement cutting and bending length. Advantages of bar bending schedule is when used along with reinforcement detailed drawing improves the quality of construction, cost and time saving for concrete construction works.

Advantages of bar bending schedule in concrete construction are

Ø When Bar bending schedule is available, cutting and bending of reinforcement can be done at factory and transported to site. This increases faster execution at site and reduces construction time and cost due to less requirement of workers for bar bending. Bar bending also avoids the wastage of steel reinforcement (5 to 10%) and thus saves project cost.

Ø 2. Using bar bending schedule for when used for Fe500, it saves 10% more steel reinforcement compared to fe415.

Ø  It provides the better estimation of reinforcement steel requirement for each and every structural member which can be used to compute overall reinforcement requirement for entire project.

Ø  It provides better stock management for reinforcement. Steel requirement for next phase of construction can be estimated with accuracy and procurement can be done. This prevents stocking of extra steel reinforcement at site for longer time, preventing corrosion of reinforcement in case of coastal areas. It also prevents shortage of reinforcement for ongoing work by accurate estimation and thus concrete construction works can proceed smoothly.

Ø It provides benchmarks for quantity and quality requirements for reinforcement and concrete works.

Ø When mechanized bar cutting and bending is used, the cost of reinforced concrete work per unit reduces and helps in cost optimization of construction project.