VERTICAL VENTIL. DUCTS - INTERNAL AND EXTERNAL FIRE

Supply and installation of vertical ventilation ducts with fire resistance EI 120 (Ve i↔o) made with FIREGUARD® 45 boards, 45 mm thick, maximum dimensions 1200x2000 mm, made of calcium silicates, asbestos-free, certified in class A1 (non-combustible) reaction to fire in accordance with classification report PK3- 01-11-002-A-1. The boards will be bonded with FIREGUARD GLUE adhesive and fixed with phosphated self-drilling screws, 5,0 mm dia., 90 mm long, at 200 mm centres.

The board joints will be covered with strips of FIREGUARD® S, 2x9 mm thick and 100 mm wide, fixed with phosphated self-drilling screws, 4,2 mm diameter, 41 mm long, at 100 mm centres, and bonded with FIREGUARD GLUE adhesive. The cladding will be fixed to the floor slab by means of an “L” profile, dimensions 60x60x6 mm, placed along the longer sides of the duct, with a 30 mm thick layer of rock mineral wool interposed between the floor slab and the “L” profile. For the application procedures, refer to the specific “installation manual”