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Builders Work Shafts

Builder's Work Shafts/Concrete Ducts must be tested to EN1366-1 and EN1366-8 for Fire Ducts and Smoke Duct respectively, this is due to spalling of concrete in a fire situation. Also, there is no evidence of fire testing having been carried out on concrete Ducts from both sides, as in test types A & B. EN13501-4 states concrete cannot be classified unless tested to EN1366 Parts 1 and 8.