| 摘要 |
A floor drain system includes a tray having a well, a riser installable in the tray, and a plurality of beads fixable within the well and outside the riser. The tray includes a perimeter flange attachable to a subfloor, and the well extends downwardly from the perimeter flange. A hollow stem extends downwardly from the well and is connectable to a drain pipe. The riser is installable at a selectable elevation within the stem of the tray, and has an interior drainage pathway orientable toward the drain pipe. The riser defines a seepage pathway outside of the riser and within the stem. The plurality of beads, when fixed together, form a permeable drain field bonded to both the riser and the tray, whereby liquid can pass through the drain field to the seepage pathway.
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