Smoke dampers do not have to be installed in sleeves - they can be installed directly into the duct. Exceptions: Fire dampers are not required at penetrations of shafts where: 1. The ductwork is continuous from the 15th floor shaft penetrations to the unit. Fire dampers for hazardous exhaust duct systems shall comply with the International Mechanical Code. Exception: Where the installation of a smoke damper will interfere with the operation of a required smoke control system in accordance with Section , approved alternate protection shall be used. Fire damper is used for prevnting smokes and fire flames when systems is burnt out the fire damper closed automaticaly,and smokes never pasees through ducts. This will provide an equivalent fire resistance rating as allowed by the exceptions in OSSC
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Fire Damper Floor Systems

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Section 607 Duct and Transfer Openings

We appreciate you being here and hope that you are getting the information that you need concerning all codes of the building trades. They also serve the same purpose as fire dampers to enable building occupants to escape and fire fighters to have easy access. Firepro B Pipe Collars This Wide Mouth collar provides a thinner profile than other collars allowing pipe joints nearer to the penetration. Yes, You can use fire damper in shaft horizontally to all floors. The access openings shall not reduce the fire-resistance rating of the assembly.
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The Ontario Building Code | Fire Dampers Waived

Joined: Nov 28, Messages: 1, Likes Received: Such walls are penetrated by ducted HVAC systems, have a required fire-resistance rating of 1 hour or less, and are in areas of other than Group H and are in buildings equipped throughout with an automatic sprinkler system in accordance with Section Where a smoke damper is installed above smoke barrier doors in a smoke barrier , a spot-type detector shall be installed on either side of the smoke barrier door opening. There is not an opening to the plenum space and the ductwork is constructed of steel having a minimum wall thickness of 0. The annular space around the duct is protected with materials that prevent the passage of flame and hot gases sufficient to ignite cotton waste where subjected to ASTM E or UL timetemperature conditions under a minimum positive pressure differential of 0. Share URL Copy and paste the link below into emails, chats or browsers. The access openings shall not reduce the fire-resistance rating of the assembly.
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Since ceiling dampers are intended to function only as heat barriers, and the Building Codes have not defined the use of these products in so far as their use as smoke barriers, the UL certification does not include the use of these products to limit the migration of smoke. Pyromas A — Intumescent Acrylic Sealant. Justifications for this alternate are as follows:. Exception: Penetrations by ducts and air transfer openings of fire walls Get Fresh Updates On your job applications, and stay connected. A listed smoke damper designed to resist the passage of smoke shall be provided at each point that a duct or air transfer opening penetrates a fire barrier that serves as a horizontal exit.
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Fire damper ductwork floor penetration

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