What is the purpose of schedule of bars explain in detail?
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. With the help of bar bending schedule the requirement of different length and sizes of bars may be known and can be arranged and bent-up during the time of construction.
What is a reinforcement bar schedule?
Bar bending schedule or schedule of bars (BBS) is a list of reinforcement bars for a given reinforced concrete work item, and is presented in a tabular form for easy visual reference.
What is BBS engineer?
Bar Bending Schedule (BBS) helps to determine the quantity of steel required in construction of your house. This helps to get the accurate estimation of steel. Once the calculation of cutting and bending is done it reduces the wastage of steel and it becomes economic.
How are bar schedules calculated?
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 do I make a bar 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.
How do I create a bar schedule?
Hence to withstand tensional stresses, steel is need in concrete. The reinforcement in concrete may be simple bars or rods bend and tied to a given schedule with stirrups….Preparing Bar schedule manualy.
| Nominal Diameter of the bar (mm) | Unit weight (kg/m) |
|---|---|
| T16 | 1.580 |
| T20 | 2.469 |
| T25 | 3.858 |
| T32 | 6.313 |
What is bar mark in reinforcement?
The bar mark (e.g. “ T2 ”) represents the type of reinforcement present in the column. Each bar mark in the schedule is also shown in the Section Legend with a graphical representation of the column section and the reinforcement.
What is Bend bar?
Bending of bars is defined as the process of bending reinforcing steel into shapes required for reinforced concrete construction. The bar bending is completed in a particular manner, which is known as bar bending schedule. Bar bending schedule is also termed as BBS.
How do you calculate the length of a reinforcement bar?
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.
What is the use of bar bending schedule in reinforced concrete?
Bar bending schedule provides the reinforcement calculation for reinforced concrete beam. It provides details of reinforcement cutting length, type of bends and bend length. We will take one example for reinforcement quantity calculations for a concrete beam. Consider a beam of clear length of 4m, 300mm wide by 450mm depth.
What is a reinforcement schedule?
A reinforcement schedule is a rule stating which instances of behavior, if any, will be reinforced. Reinforcement schedules can be divided into two broad categories: continuous schedules and partial schedules (also called intermittent schedules).
Where are the reinforcement bars located in the site?
At bottom face. Bar location can be vary as follows: There is a steel yard in the site for storing, cutting and bending of bars. Reinforcement bars are cut into required lengths and bent into required shapes shown on the bar schedule either manually or by means of machinery.
What are the nominal diameters of reinforcement bars used at site?
The nominal diameters of bars used at site were Y10, Y12, Y16, Y20, Y25 and R6. Steel is supplied in two basic types. 1. Mild steel (250 N/mm2) 2. Tor steel (460 N/mm2) Engineering drawings is a language to communicate with details. Therefore there is a standard to indicate reinforcement in drawing such as,