Underlayment panel having drainage channels

摘要

An impact-absorbing assembly includes a covering layer being one or more of artificial turf, rubber mats, polymer mats, short pile carpeting, particulate infill, wood chips, and ground rubber chips. Also included is a layer of underlayment panels positioned beneath the covering layer. The panels have a panel section with a plurality of drain holes formed therethrough. A top surface of the panels is configured to support the covering layer. A bottom surface of the panels has a plurality of bottom projections that cooperate to define bottom channels suitable to permit water flow across the bottom surface, the bottom channels being in fluid communication with the panel drain holes. The bottom projections define a first spring rate characteristic that is part of a first stage and a second spring rate characteristic is part of a second stage, the first stage having a smaller volume of material than the second stage.

主权项

1. An impact-absorbing assembly comprising:
a covering layer, the covering layer being one or more of artificial turf, rubber mats, polymer mats, short pile carpeting, particulate infill, wood chips, and ground rubber chips; and a layer of one or more underlayment panels positioned beneath the covering layer, the underlayment panels having
a panel section having a plurality of drain holes formed therethrough;a top surface configured to support the covering layer, the top surface further including a texture that maintains the general position of the covering layer on the top surface; anda bottom surface having a plurality of bottom projections that cooperate to define bottom side channels suitable to permit water flow across the bottom surface, the channels being in fluid communication with the panel drain holes, the bottom projections having tapered sides such that the bottom side channels will retain up to 25 mm of water for a slower release rate into an underlying substrate than a drainage rate across the channels.