Where are fire smoke dampers required

Q: Are fire dampers required in one-hour fire-rated walls if the facility is fully sprinkled? Code Required for Testing of Fire, Smoke, and Combination Dampers All smoke dampers are actuated since there is no method to physically sense smoke and electrical control is required. That is part you can check in building documents as fire wall is not necessarily smoke bareer.

As per NFPA 90A (2015) Approved fire dampers shall be provided where air ducts penetrate or terminate at openings in walls or partitions required to have a fire resistance rating of hours or more. Fire Dampers are used to maintain the required ratings of fire rated barriers (walls, partitions, floors) when they are penetrated by ductwork. A combination fire smoke damper also needs a smoke detector just like the smoke damper.

If the air duct is an air transfer opening (meaning it is not). A: According to NFPA 90A (19edition one-hour fire-rated barriers do not require fire dampers in fully ducted HVAC systems, unless the one-hour fire-rated barrier is a vertical shaft. Fire Smoke Damper Fire Alarms Online Now a combination smoke fire damper is located in a situation where both fire rating and smoke barriers come into play. The smoke detector can either be a duct smoke detector (System Sensor D41or DNR) or a pendant mounted detector within the duct work.

General Fire and Smoke Damper Requirements General Fire and Smoke Damper Requirements Fire Damper Required Smoke Damper Required Typically ducts shall not penetrate fire walls but if allowed then damper is required No requirements stated in section Yes, unless penetration meets ASTM E1or UL 2- or meets all of the following: wall is 1-hr or less, building is fire sprinklered. Does it means the fire walls of rating less than hrs (eg 1hr shall not be provided with fire dampers irrespective of the hazard occupancy? Fire walls need fire dampers with no exception, while the fact that smoke damper is needed should mean that the same wall is defined as smoke bareer. A combination fire and smoke damper looks very similar to a smoke damper, but has a high temperature sensor to close the damper from heat along with the local smoke detector.

What is the purpose of a fire damper?
When a rise in temperature occurs a fire damper will close and prevent the spread of flame through the barrier. Fire and Smoke Dampers - Life Safety Services FIRE AND SMOKE DAMPERS. And we can sell them for a fraction of the price because we cut out the middleman and pass the savings on to you.

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