TUB BOX APPARATUS, SYSTEMS AND INSTALLATION METHODS

摘要

Tub box systems, apparatus and methods of assembling in concrete floors und er bath tubs. Tub boxes with water sealing members can include troughs/gutters about the perimeter edges of the tub box which collect waer leakage between the tub bo x and concrete floors. Raised ribs on the outside of the tub boxes block water flowing on the surfaces of the tub box from reaching lower drain lines. Water barrier rings with flat outwardly extending sides and concentric raised ridges which attach about downwardly projecting drain bases underneath the tub box further prevent water leaks running down the drain bases. Fire stop material can be clipped about the drain bases and expand from heat to prevent fire from traveling upward around the drain lines in the concrete floors under bathtubs.