Trunking
Firestopping of service penetrations, Best practice in design and installation, was published in 2020. It is a collaboration between ASFP (Association for Specialist Fire Protection), FIS (Finishes and Interiors Sector), GPDA (Gypsum Products Development Association), BESA (Building Engineering Services Association) and BSRIA (Building Services Research and Information Association).
It defines trunking as: ‘A metal or plastic casing designed to accommodate cables, normally square or rectangular in section. Sometimes ‘lidded cable tray’ is used synonymously.’
--BSRIA
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