Member/Segment Design

Design structural steel members or segments in compliance with NZS3404 and AS4100.

Project Name

Project Number

Designer

Description

Reference

Member Category

Member Length mm

Segment Number

Section Type:

Steel Grade:

Section:

Seg No.	Start (mm)	End (mm)	Restraint	Major Axial Length (mm)	Minor Axial Length (mm)	Holes Area (mm²)	Start Restraint Rotational	End Restraint Rotational	Kt	Kr	Kl

Force input method Automatic Calculation Manual for Each Segment

Force Station Number

No.	Station (mm)	M^*x (kN.m)	M^*y (kN.m)	V^*x (kN)	N^* (kN)	alphaMCalcMethod	betaMInPlaneMajCalcMethod	betaMInPlaneMinCalcMethod	betaMOutPlaneCalcMethod

Segment	M^*x (kN.m)	M^*y (kN.m)	V^*x (kN)	N^* (kN)	k_te	αm	βm Inplane Major	βm Inplane Minor	βm Outplane	Mstar_start (kN.m)	Mstar_end (kN.m)	Mstar_2 (kN.m)	Mstar_3 (kN.m)	Mstar_4 (kN.m)	alphaMCalcMethod	betaMInPlaneMajCalcMethod	betaMInPlaneMinCalcMethod	betaMOutPlaneCalcMethod

Calculation Report Type

Load height position Top flange Shear centre

Longitudinal position of the load Within segment At segment end

α_m Calculation Manual input Based on the moment values

Moment values Interpolation between start & end moment Input M^*2, M^*3, M^*4

M ^*Start kN.m

M ^*End kN.m

M ^*2 kN.m

M ^*3 kN.m

M ^*4 kN.m

α_m

This application has been developed in accordance with the relevant provisions of NZS 3404:1997 (including Amendments 1 and 2) and AS 4100, ensuring compliance with both New Zealand and Australian structural steel design standards. It is designed to assist engineers in performing reliable design checks for both single and multi-segment members subjected to a wide range of load combinations — including major and minor axis flexure, axial tension or compression, and shear.

The tool operates in a flexible ‘check mode’ where the engineer defines the geometry, section properties, and loading, and the software evaluates the structural adequacy based on the chosen standard. Whether you're designing a simple beam or a complex member with multiple segments and load cases, the application enables efficient and intuitive validation of compliance through clear input screens and robust calculations.

Results can be exported as a visual PDF report in three formats to suit different documentation needs: Summary Report (for quick compliance checks), Standard Report (for commonly required details), and Detailed Report (showing step-by-step calculation breakdowns, equations, intermediate values, and capacity ratios in an engineering-style format with scientific notation).

This design tool is intended to streamline structural steel member verification, promote deeper understanding of NZS 3404 and AS 4100, and support fast, consistent, and professional design documentation.