SR EN 1366-8:2024

This document specifies a test method for determining the fire resistance of smoke extraction ducts. It is applicable only to smoke extraction ducts that pass through another fire compartment apart from the compartment from where smoke needs to be extracted in case of fire. It represents fire exposure of a fully developed fire. This method of test is only applicable to fire resistant ventilation ducts (same construction) with the following classification according to EN 13501-3: - fire from inside and outside i ↔ o; - applicable to a pressure difference up to 500 Pa in fire conditions; NOTE 1 It is assumed that the duct A test(s) in accordance with EN 1366-1 has been performed with an under-pressure of minimum 500 Pa. - with integrity (E) and insulation (I) criteria equal to or higher than the intended classification for the smoke extraction duct. For the purposes of the test described in this document, the duct is referred to as duct C. This test method has been designed to cover both vertical and horizontal smoke extraction ducts. A vertical system need not be evaluated to this met