Chapter 4 of the International Building Code establishes special detailed requirements for buildings with specific characteristics or uses that require enhanced safety measures beyond standard occupancy classification requirements. These requirements address aircraft-related occupancies, covered vehicle parking structures, motion picture projection rooms, stages and platforms in assembly occupancies, temporary structures and tents, membrane structures, and other specialized building types. Aircraft hangars, maintenance facilities, and flight training spaces require specific provisions for aircraft fueling, maintenance operations, and emergency response. Covered parking structures for vehicles must include specific ventilation requirements for carbon monoxide removal, fire suppression systems, and egress provisions suitable for vehicle occupants. Movie theaters and stages with motion picture projection require noncombustible projection room construction, film storage areas with specialized fire safety, and specific equipment installations. Stage areas in assembly occupancies require proscenium walls, stage curtains, and fly galleries with detailed construction and fire protection. Temporary structures including tents, temporary building systems, and demountable structures require foundations, structural integrity verification, and egress systems appropriate to their temporary nature and occupancy. Membrane structures with tensioned or air-supported fabric require detailed structural analysis, emergency pressure maintenance, and specific exit requirements. Grandstands, bleachers, and folding seats require seating layout approvals, structural calculations, and fall protection. Underground buildings including subway stations, parking garages, and subterranean occupancies require enhanced emergency lighting, voice communication systems, and specific ventilation provisions.