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Avoiding premature collapse of cable infrastructure
7 August 2020

REA, John Herbert, Registered Energy Assessor, rea, Hong Kong
John Herbert
BEAM Professional


In the event of a fire, cabling with with plastic insulation or contained in plastic conduit quickly melt causing cabling to sag down, also known as premature collapse, potentially obstructing escape.

And during fire fighting, firefighters work in complete darkness, melting plastic conduit and clips allow cabling to sag down risking entangling firefighters working blind.

The Hong Kong building regulations do not permit combustible materials in the fire escape routes, MOE, lobbies, staircases, etc. However, retrofitted work, CCTV, internet, and telecom systems often use plastic clips and plastic conduit risking premature collapse.

All cabling should be clipped and supported with metal fixings to prevent sagging cables causing entanglement and blocking or hindering escape.

About the Author

John Herbert is a veteran chief engineer with more than 30 years international engineering experience, educated in the United Kingdom, he has worked in the United Kingdom and then across Asia for more than two decades engaged by international and local companies. He is a Hong Kong Registered Energy Assessor (REA), a BEAM Professional, and stationed in Hong Kong.



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tags: fire safety, fire escape, cables, clipped metal fixings, premature collapse, sagging cables, blocking means of escape.

date: 22-09-20