Red Seal Carpenter Practice Exam 2025 – All-in-One Resource to Master Your Certification!

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In wall assembly, what does the term "fire stop" refer to?

A material that enhances the insulation

A material used to speed up fire spread

A material that slows the spread of fire

In wall assembly, a "fire stop" refers to a material or system designed to slow the spread of fire within wall cavities and other concealed spaces. By filling gaps, joints, and voids in fire-rated assemblies, fire stops help to prevent smoke and flames from traveling through these hidden areas, thereby enhancing the overall fire resistance of the structure.

Using fire stop materials is essential for maintaining the integrity of fire-rated walls, floors, and ceilings, as they are often required by building codes and fire safety regulations. Fire stops can be made of various non-combustible materials, such as intumescent sealants, mineral wool, or concrete blocks, each serving the crucial function of limiting the movement of fire from one compartment to another. This containment is vital for protecting occupants and giving them more time to evacuate during a fire incident.

The other options in this context do not align with the true purpose of fire stops. For instance, materials enhancing insulation do not specifically relate to fire containment, while materials used to speed up fire spread go against the intended function of a fire stop. Devices for fire alarms pertain to detection rather than the physical prevention of fire spread in structural components.

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A device used for fire alarms

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