![]() If the diameter of the reinforcement bar is #4 i-e ½ in or 12.70mm then, The Standard Length of reinforcement bar is taken as 40 ft Weight of Reinforcement Bar Per Length (in Kg/ft) #9 Rebar = 9/8 in = 28.575 mm Standard Length of Reinforcement Bar (in feet) BBS Formulas Diameter of Reinforcement Bars (in inches) Weight/bar = Weight of Bar Per m x Standard Length of Bar = 0.22 x 12 = 2.64 Kg/bar. Weight/m = 6 2 / 162 = 0.22 Kg/m (Note: you should keep the value of D in mm and answer comes in m) Weight Per Bar (in Kg per Bar) The weight per length of the reinforcement bars is expressed as,įor Example: If the diameter of the reinforcement bar is 6mm, The Standard length of reinforcement bars is taken 12m Weight of Bar Per Length (in Kg/m) The Commonly used diameter of reinforcement bars (in mm):Ħmm, 833, 10mm, 12mm, 16mm, 20mm, 25mm, 25mm, 28mm, 32mm, 36mm, 40mm Standard Length of Reinforcement Bars (in m) Wight of Reinforcement Bar (Shape of Bar) = No of Bars X Length of Bars X Unit weight of Bar This Formula gives the total Weight of specific shape Bar in Kilogram Point to remember for Bar Bending Schedule (Formulas): Diameter of Reinforcement Bar (in mm): Step 5: Calculate the Weight of particular Shape of Bar However, you can use the below table to check the Unit weight of different Día Bars. Unit Weight of Reinforcement Bar with Día (D) = D 2 / 162Įxample, 10 mm Día reinforcement bar Weight = 10 2 /162 = 0.617 kg/m. Unit weight of Bar = Volume of Bar X Density of Bar (7850 kg/m3) The formula for Calculating Unit weight of Bar Step 4: Calculate the unit weight of Reinforcement Bar Length of Bar = Length of Concrete member (direction in which bar is placed) – (2 X Cover) + Development lengthĭevelopment Length Development Length Chart The formula, to calculate the length of those bars. ![]() Number of Bars = + 1 = 66 +1 = 67 Bars of 10 mm Día Step 3: Calculate the length of Reinforcement bars Suppose, 10 MM bars are distributed in the 10-meter-long slab at 150 mm c/c spacing, Considering the side cover of 50 mm. Number of Bars = (Concrete slab length in which bar is Distributed – 2 X Cover) / (c/c spacing between bars) + 1 To calculate a number of bars in big slab structure, you need to check the specific spacing between bars (center to center or c/c, its show in above fig) and the length of the concrete slab in which the bars are distributed. Now, Count the number of each different shapes of the bar and note down in bar bending schedule BBS Step By Step Preparation Step 2: Count the Number of bars The above image shows the number of bars like #5, #6, #9, etc, along with Día of the Bar (e.g. Now mark the diameter of Member in the table. Now, open a structural drawing and list down all the shapes of bar you see in the structural drawing. #Civil engineering formulas for excel downloadStep by Step Preparation of Bar Bending Schedule:įirst of all, download a Bar Bending Schedule excel sheet by Visiting Below Link to start with the calculation Step 1: Identification of Members (Steel Bars)Įach different type of Steel bar or Member is usually tagged with a number or bar mark in the structural drawing. It also makes easy for clients to approve bills for Payment. Billing can be done really fast and easy using Bar Bending Schedule.This helps site engineer or quality inspector to check and approve reinforcement work with better quality control. ![]() Though, it helping in reducing the overall cost of the construction project. This will not only reduce the wastage of reinforcement steel but also help us reduce labor cost. Bar Bending Schedule makes cutting, bending of reinforcement easy at a factory and can be directly transported to the Construction site. ![]() ![]() So, at a construction site, wastage can be controlled by careful supervising of the contractor with the help of Bar Bending Schedule.
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