Total Number of Main Bars Calculator

✖Clear Span of Longer Side is the clear distance between two support of the longer side of the structural component.ⓘ Clear Span of Longer Side [L_{clear(longer side)}]			+10% -10%
✖Spacing between Bars is the distance between two consecutive bars in the slab.ⓘ Spacing between Bars [S_bar]			+10% -10%

✖Number of Main Bars is the number of reinforcement bars that are placed in the tension zone of the slab to resist the bending moment & to transfer the loads to the supports.ⓘ Total Number of Main Bars [No_{main bars}]

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Formula

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Total Number of Main Bars

Formula

`"No"_{"main bars"} = ("L"_{"clear(longer side)"}/"S"_{"bar"})+1`

Example

`"41.00667"=("6001mm"/"150mm")+1`

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Total Number of Main Bars Solution

STEP 0: Pre-Calculation Summary

Formula Used

Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1
No_{main bars} = (L_{clear(longer side)}/S_bar)+1
This formula uses 3 Variables

Variables Used

Number of Main Bars - Number of Main Bars is the number of reinforcement bars that are placed in the tension zone of the slab to resist the bending moment & to transfer the loads to the supports.
Clear Span of Longer Side - (Measured in Meter) - Clear Span of Longer Side is the clear distance between two support of the longer side of the structural component.
Spacing between Bars - (Measured in Meter) - Spacing between Bars is the distance between two consecutive bars in the slab.

STEP 1: Convert Input(s) to Base Unit

Clear Span of Longer Side: 6001 Millimeter --> 6.001 Meter (Check conversion here)
Spacing between Bars: 150 Millimeter --> 0.15 Meter (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

No_{main bars} = (L_{clear(longer side)}/S_bar)+1 --> (6.001/0.15)+1

Evaluating ... ...

No_{main bars} = 41.0066666666667

STEP 3: Convert Result to Output's Unit

41.0066666666667 --> No Conversion Required

FINAL ANSWER

41.0066666666667 ≈ 41.00667 <-- Number of Main Bars

(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 » Total Number of Main Bars

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Created by Smriti Singh

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

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Verified by Ayush Singh

Gautam Buddha University (GBU), Greater Noida

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< 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

Total Number of Main Bars Formula

Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1
No_{main bars} = (L_{clear(longer side)}/S_bar)+1

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 Total Number of Main Bars?

Total Number of Main Bars calculator uses Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1 to calculate the Number of Main Bars, The Total Number of Main Bars formula is defined as calculating the number of main bars needed for the RCC slab of a given cross-sectional area. Number of Main Bars is denoted by No_{main bars} symbol.

How to calculate Total Number of Main Bars using this online calculator? To use this online calculator for Total Number of Main Bars, enter Clear Span of Longer Side (L_{clear(longer side)}) & Spacing between Bars (S_bar) and hit the calculate button. Here is how the Total Number of Main Bars calculation can be explained with given input values -> 41 = (6.001/0.15)+1.

FAQ

What is Total Number of Main Bars?

The Total Number of Main Bars formula is defined as calculating the number of main bars needed for the RCC slab of a given cross-sectional area and is represented as No_{main bars} = (L_{clear(longer side)}/S_bar)+1 or Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1. Clear Span of Longer Side is the clear distance between two support of the longer side of the structural component & Spacing between Bars is the distance between two consecutive bars in the slab.

How to calculate Total Number of Main Bars?

The Total Number of Main Bars formula is defined as calculating the number of main bars needed for the RCC slab of a given cross-sectional area is calculated using Number of Main Bars = (Clear Span of Longer Side/Spacing between Bars)+1. To calculate Total Number of Main Bars, you need Clear Span of Longer Side (L_{clear(longer side)}) & Spacing between Bars (S_bar). With our tool, you need to enter the respective value for Clear Span of Longer Side & Spacing between Bars 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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