Amendment (36): Smoke Control in Common Escape Routes

After paragraph 2.34, insert – "Smoke control in common escape routes 2.34A The smoke control in common escape routes should be in accordance with the relevant recommendations of BS 9991 and the provisions in paragraphs 2.34B – 2.34D. 2.34B In a small building with a single stair, for an open plan flat layout design, the smoke control strategy should involve a common lobby approach. 2.34C Automatic opening vents to a smoke shaft should be a smoke damper product, tested and certified to BS EN 12101-8. Products tested as smoke rated fire doors are not acceptable replacements for smoke control dampers. 2.34D In a multiple stair building with a storey over 11 m above ground level, the corridor/lobby vents should activate automatically, as per the guidance for a single stair building."