A firestop or fire-stopping is a form of inactive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Fire stopping could be described as the sealing of any openings to prevent fire (including smoke and heat) from passing through singular, numerous or multiple building compartments.
The Wiki firestop definition is: A firestop is a fire protection system made of various components used to seal openings and joints in fire-resistance rated wall or floor assemblies. For penetrating cables, these can also be called as Multi Cable Transits (MCTs). Firestops are designed to restore the continuous fire-resistance of wall or floor assemblies, impeding the spread of fire by filling the openings in them with fire-resistant materials.
Four Preventative measures include: Fire Collars, Fire Sleeve, Fire Covers and Fire Sealants; Collars: designed to maintain fire resistance levels. They do this by encompassing pipes and other penetrations with compounds that grow throughout the fire. Sleeves: intended to fill or seal an opening created by pipes or cables passing through a fire-rated wall or ceiling. Covers: made for stopping fires in fire rated suspended ceilings. Sealants: expand when heated at high temperatures, to prevent the spread of fire and smoke.
Firestops are used in: Electrical, mechanical, and structural penetrations, Unpenetrated openings (such as openings for future use), Re-entries of existing firestops, Control or sway joints in fire-resistance-rated wall or floor assemblies, Junctions between fire-resistance-rated wall or floor assemblies and Head-of-wall (HOW) joints, where non-load-bearing wall assemblies meet floor assemblies.
The selection and right installation of a fire stop can save people’s lives. Therefore, it is a decision that should involve competent parties to safeguard effective fire stopping solutions are specified. Buildings differ and it is imperative to consider not just the product you require, but also the environment and condition into which it is being installed. Firestops should be maintained in accordance with listing and approval use and compliance.
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