O-249 FALL PREVENTION IN FACADE WORKS THROUGH DESIGN AND APPLICATION OF FIT-FOR-PURPOSE TOOLS – HONG KONG EXPERIENCE

Abstract

Introduction Truss-out Bamboo Scaffold (TBS) is a common type of working platform in Hong Kong used for Repair, Maintenance, Alternation and Addition works at external walls of high-rise buildings. TBS platform is supported by a few I-shape metal brackets temporarily installed at the external wall. Scaffolders usually have to overstretch their upper bodies or even get outside of the window to install anchor bolts to secure metal brackets and construct the TBS platform. Such hazardous work resulted in fatal fallings occasionally. Results-Discussion OSHC is attempting to tackle the issue through two low-tech but new methods. First, the design and distribution of a Rapid Demountable Platform (RDP). Second, re-engineering I-shape brackets with improved design. RDP is an aluminum alloy platform assembled from prefabricated parts. During erection and dismantling of RDP, scaffolders just stand inside the apartment or work on a safe working platform with proper guardrails and toe-boards. However, RDPs are only applicable to windows of certain configurations, limiting its wide adoption. Where RDP cannot be applied, TBS platforms have to be erected. The improved I-shape bracket would come in handy. It is more versatile, with alternative anchorage points for adding anchor bolts. The overall vertical length is reduced to eliminate the need for scaffolders to overstretch their bodies. Trial tests for both RDP and improved I-shape bracket revealed promising results. Conclusion With the two small but fit-for-purpose “innovations”, workers working on the façade no longer need to work as “Spiderman” and could work safely. Sponsorship schemes were being rolled out to enhance market penetration. Small changes resulted in big safety differences.