FACTS ABOUT FIRE RESISTING DUCTWORK REVEALED

Each storey need to be ventilated by long-lasting openings at Each and every auto parking level. The openings may be at ceiling stage. The combination no cost vent area needs to be a minimum of one/40 of that amount's floor place, not less than 50 % of which ought to be supplied equally by two opposite partitions (1/a hundred and sixty on both side