Multiplex Cinema MEP — Dolby Atmos + SMPTE + ASHRAE Handbook Ch 4 + NFPA 5000

An 8-screen Tier-1 Indian multiplex demands ₹12.5 Cr MEP capex with 159 TR total / 110 TR diversified cooling + Dolby Atmos-compliant NC 25-30 acoustic ceiling. ASHRAE Handbook Ch 4 + ASHRAE 62.1 + Dolby Atmos Premier + SMPTE 196M + NFPA 5000 + NBC + ICTA govern. Three failures: AHU noise breaching NC 25-30 due to 7.5 m/s duct velocity (Atmos certification fails), common AHU for 4 screens missing show-timing variance, smoke management common to all screens instead of independent per auditorium (8 simultaneous evacuations impossible).

Multiplex cinema MEP — the design event

Indian multiplex chains (PVR INOX, Cinepolis, Carnival, Miraj) typically build 8-16 screen complexes inside malls or standalone. Each auditorium has 100-400 seats + intense Dolby Atmos audio (NC 25-30 required) + concentrated patron metabolic heat (110 W/m² peak) + concurrent occupancy unpredictable across screens. ASHRAE Handbook 2023 Ch 4 + ASHRAE 62.1 + Dolby Atmos Room Specification + SMPTE 196M + NFPA 5000 + ICTA Indian Cinema Technical Association guidelines govern. The classic failure is single AHU per multiple screens = thermal interaction + acoustic bleed.

8-screen multiplex MEP — typical Tier-1 city mall

Three multiplex MEP failures Indian chains keep making

1. Audio NC + HVAC noise breach — Dolby Atmos requires NC 25-30 measured at audience seat. AHU + duct + diffuser velocity + return-air paths must be acoustic-engineered. Indian designers default to 7.5 m/s duct velocity (NC 40-45) — Atmos certification fails + chain rejects handover.
2. Common AHU for 4 screens — screens have different show timings + occupancy patterns. Common AHU = thermal complaint at 40 % part-load. Each screen needs dedicated VRF or DX + dedicated DOAS, not shared chilled-water AHU.
3. Smoke exhaust missing per-auditorium — NBC + NFPA 5000 require independent smoke management per assembly occupancy. Common multiplex smoke fan does not give time for 8 simultaneous evacuations.