Drainage pipe

A method for peripheral drainage of crawl spaces, or basements with a drainage pipe, the method comprising:

• providing a rigid tubular body having opposing ends and an inner and outer surfaces, the longitudinally rigid tubular body extending along a longitudinal center axis connecting the opposing ends and being substantially rigid longitudinally;
• providing a plurality of protrusions projecting from the rigid tubular body, wherein the plurality of protrusions are spaced apart so as to form respective grooves between adjacent protrusions;
• providing at least one penetration through the rigid tubular body between the inner and outer surfaces, wherein the at least one penetration penetrates the rigid tubular body in the grooves;
• and
• effecting flowing of liquid to the at least one penetration via a standoff between the at least one penetration and a sleeve disposed so as to wrap around at least a portion of the rigid tubular body defining a flow channel to the at least one penetration.

An elongate water-conveying drainage conduit for peripheral drainage of crawl spaces, the elongate water-conveying drainage conduit comprising:

• an elongate tubular conduit section having opposing ends and an inner and outer surfaces, the elongate tubular conduit section extending along a longitudinal center axis connecting the opposing ends and being substantially rigid longitudinally;
• a plurality of protrusions projecting from the elongate tubular conduit section, wherein the plurality of protrusions are spaced apart so as to form respective grooves between adjacent protrusions;
• at least one penetration through the elongate tubular conduit section between the inner and outer surfaces, wherein the at least one penetration penetrates the elongate tubular conduit section in the grooves;
• a vertical wall portion extending from the outer surface, the vertical wall portion including spacers for engagement with a footer to space the vertical wall portion from the footer and provide therebetween a drainage space to admit water flowing down the footer and through the at least one penetration into the elongate tubular conduit section for drainage to a remote drain;
• and
• a sleeve disposed so as to wrap around at least a portion of the elongate tubular conduit section, wherein the plurality of protrusions form a standoff between the at least one penetration and the sleeve defining a flow channel to the at least one penetration.