The National Association of Rooflight Manufacturers (NARM) has issued a new document entitled ‘Definition of geometric free area for Smoke Vents’.
Stuart Middle, technical committee chairman at NARM, said: “This document is intended to contribute to improving fire safety standards by clarifying the definition of the term ‘geometric free area’ in respect of smoke ventilation, to ensure compliance as defined in Appendix D of Approved Document B2 of the Building Regulations.”
The document is listed as NARM Quickguide 07, and can be downloaded free of charge from the ‘Technical Documents’ section of the NARM website library.
NARM represents manufacturers and suppliers of all types of rooflights into the UK market, many of which incorporate ventilation functions.
