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Scaffold Load & Tie-Spacing Calculator — OSHA 1926.451

How it works

Enter the scaffold geometry and loads. The calculator checks four OSHA 1926.451 limits in real time: leg/standard capacity (dead + live load), height:base ratio (stability), and vertical & horizontal tie spacing. Verify the design to get a scored verdict and stamped PDF.

Scaffold Parameters

Geometry

Bay length (m)Bay width / base (m)Number of lifts (levels)Lift height (m)

Loads

Dead load per platform (kg/m²)Live load per platform (kg/m²)Leg / standard capacity (kN)

Tie Spacing

Tie vertical spacing (m)Tie horizontal spacing (m)Base width for ratio (m)

Live Calculations

Platform area3.25 m²

Dead load / platform81.3 kg

Live load / platform243.8 kg

Total load / platform325.1 kg

Total load (all lifts)1300.4 kg

Load per leg6.38 kN

Leg utilization (vs capacity)32%

Total height8 m

Height : base ratio6.15 : 1

Tie vertical spacing6 m / 7.9 m

Tie horizontal spacing6 m / 9.1 m