Cutting Length of Main Bar Calculator

✖Clear Span of Shorter Side is the clear distance between two support (column, wall etc.).ⓘ Clear Span of Shorter Side [L_{clear(short side)}]			+10% -10%
✖Beam width is the thickness of beam.ⓘ Beam Width [W_beam]			+10% -10%
✖Concrete Cover for Slabs is the least distance between the surface of embedded reinforcement and the outer surface of the concrete.ⓘ Concrete Cover for Slabs [C_slab]			+10% -10%
✖Effective Depth of Slab is calculated by the formula =Slab thickness – 2 x Clear Cover – Bar Diameter.ⓘ Effective Depth of Slab [d_eff]			+10% -10%
✖Diameter of Reinforcement Bar is the thickness of the steel bar to be used.ⓘ Diameter of Reinforcement Bar [d]			+10% -10%

✖Cutting Length of Main Bar is the actual length of the bar which will be shaped up for laying at the required position.ⓘ Cutting Length of Main Bar [L_{main bar}]

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Cutting Length of Main Bar

Formula

`"L"_{"main bar"} = "L"_{"clear(short side)"}+(2*"W"_{"beam"})-(2*"C"_{"slab"})+(0.42*"d"_{"eff"})-(2*"d")`

Example

`"2951.8mm"="2500mm"+(2*"240mm")-(2*"25mm")+(0.42*"90mm")-(2*"8mm")`

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Cutting Length of Main Bar Solution

STEP 0: Pre-Calculation Summary

Formula Used

Cutting Length of Main Bar = Clear Span of Shorter Side+(2*Beam Width)-(2*Concrete Cover for Slabs)+(0.42*Effective Depth of Slab)-(2*Diameter of Reinforcement Bar)
L_{main bar} = L_{clear(short side)}+(2*W_beam)-(2*C_slab)+(0.42*d_eff)-(2*d)
This formula uses 6 Variables

Variables Used

Cutting Length of Main Bar - (Measured in Meter) - Cutting Length of Main Bar is the actual length of the bar which will be shaped up for laying at the required position.
Clear Span of Shorter Side - (Measured in Meter) - Clear Span of Shorter Side is the clear distance between two support (column, wall etc.).
Beam Width - (Measured in Meter) - Beam width is the thickness of beam.
Concrete Cover for Slabs - (Measured in Meter) - Concrete Cover for Slabs is the least distance between the surface of embedded reinforcement and the outer surface of the concrete.
Effective Depth of Slab - (Measured in Meter) - Effective Depth of Slab is calculated by the formula =Slab thickness – 2 x Clear Cover – Bar Diameter.
Diameter of Reinforcement Bar - (Measured in Meter) - Diameter of Reinforcement Bar is the thickness of the steel bar to be used.

STEP 1: Convert Input(s) to Base Unit

Clear Span of Shorter Side: 2500 Millimeter --> 2.5 Meter (Check conversion here)
Beam Width: 240 Millimeter --> 0.24 Meter (Check conversion here)
Concrete Cover for Slabs: 25 Millimeter --> 0.025 Meter (Check conversion here)
Effective Depth of Slab: 90 Millimeter --> 0.09 Meter (Check conversion here)
Diameter of Reinforcement Bar: 8 Millimeter --> 0.008 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

L_{main bar} = L_{clear(short side)}+(2*W_beam)-(2*C_slab)+(0.42*d_eff)-(2*d) --> 2.5+(2*0.24)-(2*0.025)+(0.42*0.09)-(2*0.008)

Evaluating ... ...

L_{main bar} = 2.9518

STEP 3: Convert Result to Output's Unit

2.9518 Meter -->2951.8 Millimeter (Check conversion here)

FINAL ANSWER

2951.8 Millimeter <-- Cutting Length of Main Bar

(Calculation completed in 00.004 seconds)

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Home » Engineering » Civil » Estimation and Costing » Building Estimation » Bar Bending Schedule » Bar Bending Schedule for RCC slab » Cutting Length of Main Bar

Credits

Created by Smriti Singh

MIT Academy of engineering, Pune (MITAOE), Alandi, Pune

Smriti Singh has created this Calculator and 25+ more calculators!

Verified by Ayush Singh

Gautam Buddha University (GBU), Greater Noida

Ayush Singh has verified this Calculator and 100+ more calculators!

< 4 Bar Bending Schedule for RCC slab Calculators

Cutting Length of Main Bar

Go Cutting Length of Main Bar = Clear Span of Shorter Side+(2*Beam Width)-(2*Concrete Cover for Slabs)+(0.42*Effective Depth of Slab)-(2*Diameter of Reinforcement Bar)

Cutting Length of Distribution Bar

Go Cutting Length of Distribution Bar = Clear Span of Longer Side-(2*Concrete Cover for Slabs)

Total Number of Distribution Bars

Go Number of Distribution Bars = (Clear Span of Shorter Side/Spacing between Bars)+1

Total Number of Main Bars

Go Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1

Cutting Length of Main Bar Formula

What are Main Bars?

The reinforcement bars that are placed in the tension zone of the slab to resist the bending moment & to transfer the superimposed loads to the supports that are provided for the slab are called main bars.
Main bars are always placed at the bottom part of the slab reinforcement and distribution bars rest over the main bar as shown in the above drawing.
The diameter of the main bar should not be less than 8mm for the HYSD bar and 10mm for plain bars.

How to Calculate Cutting Length of Main Bar?

Cutting Length of Main Bar calculator uses Cutting Length of Main Bar = Clear Span of Shorter Side+(2*Beam Width)-(2*Concrete Cover for Slabs)+(0.42*Effective Depth of Slab)-(2*Diameter of Reinforcement Bar) to calculate the Cutting Length of Main Bar, The Cutting Length of Main Bar formula is defined as the actual length of the bar which will be shaped up for laying at the required position. Cutting Length of Main Bar is denoted by L_{main bar} symbol.

How to calculate Cutting Length of Main Bar using this online calculator? To use this online calculator for Cutting Length of Main Bar, enter Clear Span of Shorter Side (L_{clear(short side)}), Beam Width (W_beam), Concrete Cover for Slabs (C_slab), Effective Depth of Slab (d_eff) & Diameter of Reinforcement Bar (d) and hit the calculate button. Here is how the Cutting Length of Main Bar calculation can be explained with given input values -> 2.9E+6 = 2.5+(2*0.24)-(2*0.025)+(0.42*0.09)-(2*0.008).

FAQ

What is Cutting Length of Main Bar?

The Cutting Length of Main Bar formula is defined as the actual length of the bar which will be shaped up for laying at the required position and is represented as L_{main bar} = L_{clear(short side)}+(2*W_beam)-(2*C_slab)+(0.42*d_eff)-(2*d) or Cutting Length of Main Bar = Clear Span of Shorter Side+(2*Beam Width)-(2*Concrete Cover for Slabs)+(0.42*Effective Depth of Slab)-(2*Diameter of Reinforcement Bar). Clear Span of Shorter Side is the clear distance between two support (column, wall etc.), Beam width is the thickness of beam, Concrete Cover for Slabs is the least distance between the surface of embedded reinforcement and the outer surface of the concrete, Effective Depth of Slab is calculated by the formula =Slab thickness – 2 x Clear Cover – Bar Diameter & Diameter of Reinforcement Bar is the thickness of the steel bar to be used.

How to calculate Cutting Length of Main Bar?

The Cutting Length of Main Bar formula is defined as the actual length of the bar which will be shaped up for laying at the required position is calculated using Cutting Length of Main Bar = Clear Span of Shorter Side+(2*Beam Width)-(2*Concrete Cover for Slabs)+(0.42*Effective Depth of Slab)-(2*Diameter of Reinforcement Bar). To calculate Cutting Length of Main Bar, you need Clear Span of Shorter Side (L_{clear(short side)}), Beam Width (W_beam), Concrete Cover for Slabs (C_slab), Effective Depth of Slab (d_eff) & Diameter of Reinforcement Bar (d). With our tool, you need to enter the respective value for Clear Span of Shorter Side, Beam Width, Concrete Cover for Slabs, Effective Depth of Slab & Diameter of Reinforcement Bar and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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