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Buildings that have access stairs between floors should have a mandatory, fire-rated enclosure installed, or else have all of the floors fully sprinklered, with a separate deluge system designed to protect the openings between floors. This information should be conspicuously noted at the ground-floo...

Buildings that have access stairs between floors should have a mandatory, fire-rated enclosure installed, or else have all of the floors fully sprinklered, with a separate deluge system designed to protect the openings between floors. This information should be conspicuously noted at the ground-floor lobby.