Patent ID: 9580911
Date: 2017-02-28
CPC Classifications: E04F

Claim:
1. A method of installing a stair tread comprising the steps of: providing, offsite of installation, a metal pan including a bottom, first and second sidewalls, a front wall, and a rear wall forming a cavity; positioning one or more foam inserts into the metal pan's cavity; pouring concrete filler into said metal pan after said foam insert has been positioned into said pan, and allowing said concrete filler to harden to create, offsite of installation, a stair tread having an upper walking surface; providing, at an installation site, a first stringer and a second stringer forming a pair of parallel stringers, the pair of parallel stringers being configured for supporting the stair tread to form at least a portion of a stairway; transporting said stair tread from the offsite to the installation site; and affixing said metal pan to said first stringer and to said second stringer to form said at least a portion of the stairway.