How to Design a Gantry Girder to Eurocode 3 (Step by Step, With Free Software)
EN 1993-1-1 has no crane-specific provisions at all — the true governing document is EN 1991-3, with its own detailed…
How to Design a Steel Column (Axial Member) to BS EN 1993 (UK National Annex) (Step by Step, With Free Software)
BS EN 1993's Ayrton-Perry buckling curve needs an imperfection factor selected from five named curves by cross-section shape, axis and…
Why Buildings With Offset Stiffness Twist During an Earthquake
Two Centers That Are Supposed to Line Up, and Often Don't Every building has a center of mass (the point…
How to Design a Purlin/Girt Cleat Connection to NZS 3404 (Step by Step, With Free Software)
Every check in this purlin cleat connection runs loose — none above utilisation 0.22. A clean illustration that a light…
Why a ‘Soft Storey’ Is One of the Most Dangerous Things in Seismic Design
A Common Architectural Feature With a Serious Structural Consequence A soft storey occurs when one floor of a building —…
How to Design a Bracing Connection to NZS 3404 (Step by Step, With Free Software)
A rod brace's governing failure mode under NZS 3404 comes down to a truly close race between gross-section yield and…
What ‘Diaphragm Action’ Means and Why Floors Do More Than Carry Gravity Load
A Second Job Most Floors Are Quietly Doing A floor slab's obvious job is carrying gravity load down to the…
How to Design a Purlin/Girt Cleat Connection to BS EN 1993 (UK National Annex) (Step by Step, With Free Software)
A purlin cleat connection under BS EN 1993 checks a actually signed reaction — wind uplift on a roof purlin…
How to Design an HSS Cap Plate Connection to NZS 3404 (Step by Step, With Free Software)
A cap plate connection is really three independent checks stacked together — the plate's own bending, the plate-to-column perimeter weld,…
How to Design a Truss Gusset Plate Connection to NZS 3404 (Step by Step, With Free Software)
This gusset plate's net-section fracture check runs at utilisation 0.928 at the software's own default inputs — the tightest check…