Pallet Racking Beam Deflection Calculator

Based on the SEMA Code of Practice.

Pallet Racking Beam Deflection Calculator

Select the beam span and enter your centre mid-span deflection reading. Status is calculated instantly against the SEMA L/200 tolerance. Note: This tool is provided for guidance only.

How to measure: Load the beam to its rated capacity. Stretch a datum line taut between both end connectors. Measure the gap from the datum line down to the top of the beam at the exact centre (L ÷ 2). Enter that single reading below.

Measurement Guide

Beam Span

— Select span —1,500 mm (1.5 m)1,800 mm (1.8 m)2,100 mm (2.1 m)2,400 mm (2.4 m)2,700 mm (2.7 m)3,000 mm (3.0 m)3,300 mm (3.3 m)3,600 mm (3.6 m)3,900 mm (3.9 m)4,200 mm (4.2 m)4,500 mm (4.5 m)

11 standard SEMA spans

⚠ Please select a beam span.

Centre Deflection Measured (mm)

Measured at mid-span in mm

⚠ Please enter a deflection reading in mm.

Calculated in accordance with the SEMA Code of Practice for the Use of Static Pallet Racking . Maximum permissible deflection = Span ÷ 200 under rated load. This tool supports but does not discharge the statutory duty under PUWER 1998, MHSWR 1999, and HSWA 1974. Results must be reviewed by a competent person. Periodic inspection by a SEMA Approved Inspector (SAI) is recommended.