Smoke leakage (S): Failure of this criterion shall have happened if the move rate in duct A over the exam exceeds 10 m³ / (m² h), related to twenty °C and 1013 mbar, related to the internal surface space in the duct inside the furnace. One of the most popular https://fire-rated-insulation-for01122.full-design.com/fire-rated-ductworth-fundamentals-explained-79252875