Table of Contents
How do you calculate a bar bending schedule?
Bar Bending Schedule for Reinforced Concrete Beam
- 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 does RCC calculate number of bars?
We use the formula, D = √4Asc/nπ, this formula is used to find out diameter of Steel bar in RCC column, if their area of Steel and their number is given.
What is bar bending schedule in civil engineering?
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.
What is the bar bending schedule?
Bar Bending Schedule (BBS) is basically the representation of bend shapes and cut length of bars as per structure drawings. BBS is prepared from construction drawings. For each member separate BBS is prepared because bars are bended in various shapes depending on the shape of member.
What is the bar bending schedule format?
Bar Bending Schedule Format Bar Shape Dia of Bar Cutting Length Number of Bar Length of Bar (mm) Bar Shape Dia of Bar Cutting Length Number of Bar 20 10 3920 2 – 10 2920 2 – 8 1560 16 –
How to calculate the bend length of a bent bar?
To calculate the bend length the below procedure is followed. From the above figure as the bar is bent at an angle θ 0 the additional length (l a) is introduced. Where, l a = l 1 – l 2 – (i) Tanθ = D/l 2 ; Sinθ = D/l 1
How to prepare BBS for RCC structural engineering?
Every RCC structural element should have a separate BBS. Do not group them as one. Ensure to follow the IS guidelines for bending, hook length, lap length & development length calculations. It would be handy if you memorize the unit weight of steel bars.
How to prepare for steel bending project?
Ensure to follow the IS guidelines for bending, hook length, lap length & development length calculations. It would be handy if you memorize the unit weight of steel bars. Ensure the estimation by thumb rule calculations of steel reinforcement for different structural members. Keep Bar Bending Shape Codes handy for easy reference.