Ключевые слова:
Fire resistance, Fire tests, Building services, Fire safety in buildings, Fire spread prevention, Ducts (building services), Ventilation ductwork, Ventilation equipment, Vertical, Horizontal, Testing conditions, Test equipment, Test specimens, Size, Length, Rectangular shape, Circular shape, Width, Height, Diameter, Design, Openings (construction spaces), Joints, Supports, Thickness, Density, Test duration, Walls, Thermal insulation, Thermocouples, Fire stops, Reports