Design, Construction and Verification of Temporary Working Platforms â€“ Australian & New Zealand Good Industry Practice-PPT Presentation

PPT Presentation

Pdf Summary

The presentation outlines good industry practice for designing and verifying temporary working platforms in Australia and New Zealand, drawing on relevant guidance published between 2018 and 2022.<br /><br />A safe design process links five key areas: plant loading, ground conditions, platform design parameters, platform design, and verification. Plant loads should be assessed for the equipment’s critical operating cases. For cranes, consider how loads are distributed through outriggers or tracks, lifting angles, and allowable differential settlement. For piling rigs, assess all critical load cases and account for load transfer through tracks and, for CFA rigs, the mast foot. The governing case is the pressure applied to the platform—not necessarily the plant’s total weight.<br /><br />Ground investigations can be challenging because of cost and schedule pressures, unsuitable existing investigations, limited probing or laboratory data, variable site conditions, and insufficient investigation depth. Designers should establish a reliable ground model and assess relevant correlations, test results, groundwater levels, and seasonal changes. Platform material properties and compaction also need consideration.<br /><br />Platform design should use an appropriate method, such as BRE470 or TWf2019:02, and address drained or undrained conditions, minimum thickness, geosynthetic reinforcement, stability, nearby permanent works, offset distances, access roads, and ramps. The platform’s intended use should be clearly specified.<br /><br />Verification measures include reviewing compaction records, inspections, in-situ load testing, and remediation of soft spots. Hard barriers may be needed to maintain required offset distances, and completion should be documented with a working platform certificate.

Keywords

temporary working platforms

Australia

New Zealand

safe design process

plant loading

ground conditions

platform design

verification

crane outrigger loads

ground investigation