Smoke Control in a Non-ducted Return-air System

Smoke Control in a Non-ducted Return-air System

This article focuses on a design challenge common in new buildings: designing for smoke control in a non-ducted return-air system above a suspended ceiling.

In a fire emergency, smoke and byproducts of combustion pose a far greater threat to human life than flames and heat. That is why, in modern construction, a considerable amount of attention is paid to ensuring a building is capable of limiting the spread of smoke in an emergency. Myriad systems and processes, including fire doors, smoke-detection systems, stairwell-pressurization systems, and exhaust systems, contribute to these designs, with many playing a major role in building HVAC and con

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