Last Updated
：2025/11/23
dry riser
（ plural ）
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A main vertical pipe, usually kept empty, intended to distribute water to multiple levels of a building in the event of a fire.
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dry riser
The firefighters connected their hoses to the building's dry riser to quickly supply water to the upper floors.
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The firefighters connected their hoses to the building's dry riser to quickly supply water to the upper floors.
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