How many stirrups (ties) are required per column?

Divide the column height by the tie spacing (e.g., 3.0m / 0.15m = 20) and add 1 extra tie, plus additional ties if anti-seismic confinement zones are specified.

Columns & ReinforcementConstruction

Reinforced Concrete Column Volume, Rebar Cage & Stirrups Estimator

Calculate ready-mix concrete volume (m³), formwork surface contact area, longitudinal main rebar steel tonnage, and lateral tie/stirrup quantities for rectangular or circular columns.

Construction & Building Civil & Structural Engineering Building Materials & Quantities

Calculated Result

Total Ready-Mix Concrete Volume (m³)

3.02m³

Calculator Inputs

Column Section Width (cm)

Quick select:

Column Section Depth (cm)

Quick select:

Clear Column Height (m)

Quick select:

Number of Identical Columns

units

Quick select:

Main Rebar Bars per Column

bars

Quick select:

Main Rebar Diameter (mm)

Stirrup Tie Spacing (cm)

Quick select:

Total Ready-Mix Concrete Volume (m³)

3.02m³

Total Steel Rebar Cage Weight (kg)

395.9 kg

Total Stirrups / Ties Count

168 ties

Formwork Contact Surface Area (m²)

33.6 m²

Single Column Net Volume

0.36 m³

Longitudinal Main Rebar Weight

303 kg

Main Longitudinal Rebar vs. Stirrups Weight

Longitudinal Main Rebar Weight

303 kg(77%)

total_stirrups_steel_kg

92.9(23%)

Calculations assume standard 25mm (1 inch) clear concrete cover and standard lap splice extensions.

All engineering calculations, structural estimates, and electrical sizing metrics are provided for preliminary estimation only. Always ensure compliance with relevant statutory building codes and occupational safety standards, verified by a certified professional engineer before practical implementation.

Calculation Methodology

Concrete Volume = Column Section Area * Height * Quantity. Stirrups Count = (Height / Spacing) + 1. Rebar Weight = Total Length * Unit Weight.

Frequently Asked Questions

Multiply cross-sectional area (Width * Depth) by Height, then multiply by the total number of identical columns and add 5% for site casting waste.

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Reinforced Concrete Column Volume, Rebar Cage & Stirrups Estimator

Calculator Inputs

Main Longitudinal Rebar vs. Stirrups Weight

Calculation Methodology

Frequently Asked Questions

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