Steel Closed Section Capacities (Lite)

Design Capacity Tables Evolved

When it comes to structural engineering, design capacity tables are a vital resource, especially for those working with open sections of structural steel. However, the table form is outdated and an intuitive tool is necessary to streamline workflows. Presented below are capacities for various open sections calculated in accordance with AS 4100-1998, and design capacities are in SI units with an easy to digest format.

Utilising the Tool Effectively

This tool is designed to demystify the complexities surrounding steel closed section capacities. Pick a ‘Designation’ from a dropdown list and magically conjured up are the Moment Capacities (Msx, Msy) and Web Capacity (Vv) faster than you can say “structural engineering.” Whether you’re designing a skyscraper or just trying to impress your boss, this app delivers the numbers you need with a click. Responsive, reliable, and ready to save your sanity (and your deadlines), this app is the superhero your design projects deserve.

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Steel Closed Sections

Steel Closed Section Capacities (Lite)

Visualisation

Live section geometry

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The section geometry, dimensions, centroid, and governing mode update instantly.

Result

Governing utilisation

PENDING
Utilisation ratio η --

Results will appear when the selected section and applied actions are valid.

Status--PASS when η ≤ 1.0
Governing mode--Controlling utilisation ratio
Reserve factor--1 / η
Section label--Active family, grade, and designation
Awaiting valid inputs Input validation must pass before demand-to-capacity ratios can be shown.
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Input Workspace

Section and applied actions

Equation Set

Properties

Secondary properties

Mass--kg/m
Compression φNs--kN
Tension φNt--kN
Moment φM--kNm
Shear φV--kN
Torsion φT--kNm
Thickness t--mm
Width B--mm
Depth D--mm
Area estimate A--mm²

History

Saved results

TimestampSectionDemand summaryModeφStatus
No saved results yet.

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