Patent ID: 7207747
Filing Date: 2007-04-24
Classification: E01C,E02B

Abstract:
1. A drainage system for a sand bunker which comprises a depression in soil filled with bunker sand, comprising: at least one conduit, running along the bottom of the depression, for receiving water flowing into the bunker sand; the conduit having (a) an arch shape cross section, (b) a solid top with respect to passage of water therethrough, and (c) opposing side walls having downward sloped perforations, the sidewalls running downwardly and outwardly from the top to opposing sidewall bases; wherein, said conduit has an open bottom; and, wherein a vertical load applied to the top of the conduit is transferred downwardly only to spaced apart portions of said bases, to thereby leave free of vertical load the predominant portion of the soil which forms the bottom of the depression underlying said at least one conduit.