STAIR TREAD AND IMPROVED METHOD OF BUILDING A STAIRWAY
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United States of America Patent
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app pub date -
Feb 2, 2017
filing date -
Oct 7, 2015
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Abstract
A stair tread and method of building a stairway is provided. Each stair tread includes a metal pan having one or more walls forming a cavity. Concrete filler is disposed in the cavity to provide an upper walking surface. Reinforcement bars and foam blocks can be positioned within the cavity. Concrete treads including the pan can then be transported to a job site for attachment between a pair of stringers.
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