What is a rebar bending schedule?
Bar bending schedule or schedule of bars is a tabular representation of reinforcement bar. It is generally represented for each type of R.C.C work. Bar bending schedule generally describes the particulars of bars, shape of bending with sketches and total length and weight of the bars along with their numbers.
How are bends in reinforcement bars calculated?
Example of Beam Reinforcement Calculation:
- Length of B1 = clear distance between walls + 2 x width of walls – 2 x bar cover + 2 x bend length.
- Length of bar B2: A + B + C = 4000 + 2 x 230 – 2 x 40 + (1.414xH – H)
- B2 = 4000 + 2 x 230 – 2 x 40 + (1.414×334 – 334) = 4518.3 = 4520mm.
How do you make a bar bending schedule?
Step by Step Preparation of Bar Bending Schedule.
- Identification of Members (Steel Bars)
- Step 2 Count the Number of bars.
- Step 3: Calculate the length of Reinforcement bars.
- Step 4: Calculate the unit weight of Reinforcement Bar.
- Step 5: Calculate the Weight of particular Shape of Bar.
Which code is used for bar bending schedule and detailing of steel bars?
Format of Bar Bending Schedule as per Code IS:2502-196
| Location | Mark Designation | Shape ( All Dimensions Are in Accordance with This Standard Unless Otherwise Stated) |
|---|---|---|
| (1) | (2) | (8) |
| Column | C4 4R 25 N | Straight |
What is bar bending?
Bar bending is the manufacture and bending of the steel reinforcing bars and beams, also known as rebar, used as reinforcement in concrete construction. This gives the manufacturers the proper bends and tensile strengths of the steel required to make certain shapes or other concrete constructions that are required.
How do you bend reinforcement bars?
Put the rebar into a vise, lining up your future bend with the end of the jaws. In order to bend rebar, you will need to hold one side of it in place, then pull down on the opposite end to bend it. As the vise holds the rebar in place, it bends right where the vise stops and the “free” section of the bar begins.
How is bend length calculated?
Bend allowance calculations are used to determine the developed length of flat sheet metal required to make a bend with a specific radius and angle….
| L = (Π/2 x R + Y factor x T) Θ/90 | |
|---|---|
| Where: L = | Developed length |
| Y factor = | The default Y factor = 0.50 |
| T = | Material thickness |
| Θ = | Bend angle in degrees (°) |
What is the formula for straight bar in bar bending schedule?
Bar Bending Schedule :-
| S.No. | Particulars |
|---|---|
| 1. | Standard Length of the Steel Bar (Bars are sold at standard Length) |
| 2. | Weight of Bar for length = 1m |
| Ex: | If length of bar is 12m with 10mm Dia then , Weight of bar = D2/162 Therefore for length 1m = 1m x D2/162 = 1 x 102/162 = 0.61 Kgs For length 12m = 12 x 102/162 = 7.40Kgs |
How do you bend a reinforcement bar?