| 摘要 |
An emergency escape system for multistory buildings in which stair units are stored in recesses in the floor of each above grade level of the building. The stair units are released for gravity depolyment to the next below balcony in an emergency, and a cover panel is opened to enable egress by building occupants through the recess, down the deployed stairs to the next balcony and so on until ground level is reached.
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