V.05.5ISA 100×100×10 Angle Strut

Problem

Compare the IS 800:2007 limit-state capacities with STAAD.Pro's design output.

Reference

• STAAD.Pro V8i SS6, the same input file run by Sutranet (CODE IS800 LSD, TRACK 2 for the capacity of each clause).

Model

• ISA 100×100×10, pinned, 2 m long
• 150 kN axial compression; buckling curve c about the minor principal axis
• E 205 GPa; the checks are given STAAD's section properties, so the comparison is of the code clauses alone

Comparison

• The second row uses the angle properties Sutranet computes itself, including the minor principal radius of gyration.
• In the app, sections come from the IS 808:2021 table, which differs from STAAD's older table by up to 1.1% (see V.07.1), so the app's capacities differ from these by about that much.

Reproduce in Sutranet CAD

1. Open the project in the app (no sign-up needed), or download the file and open it with 📂 Import Job JSON in the File group.
2. Run Analysis (Static) with P-Delta Analysis unticked and Design Code IS 800.

The app works in SI units; results in kip and inch are converted (1 kip = 4.448 kN, 1 kip-in = 0.1130 kN·m, 1 in = 25.4 mm).

Automated test: staad_design.rs, run on every change.