Stackable tower shaft wall stair unit and method
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United States of America Patent
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-
Feb 2, 2016
Grant Date -
Aug 20, 2015
app pub date -
Mar 12, 2015
filing date -
Mar 26, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A precast stackable tower shaft wall stair unit and method having four structurally interconnected opposing walls forming a peripherally defined body defining a medial channel extending therethrough. A locking recess is defined in one corner portion at adjacent interconnected walls, and a mating locking protuberance is carried at a diametrically and vertically opposite corner portion allowing units to be stacked upon one another forming a continuous medial channel extending therethrough. A lower landing, an upper landing and a flight of stairs extending between a lower landing and an upper landing are carried on a wall in the medial channel extending from the lower edge to an upper edge. Stacking of adjacent to units simultaneously forms a medial channel extending therethrough and a continuous stairway therein.
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