These items shall be non-perforated, dual wall, HDPE pipe and comply with Section 4146. Removal and disposal of existing subdrain tile and other accessories shall be incidental to these items. All fittings required to make connections or angles shall be included. Contractor shall note that not all subdrain items may be used but are included in case any one of these diameters are encountered. It is anticipated that work will include a 10" and 12" size subdrain pipe but sizes will need to be verified in the field. Payment will be per foot and will include pipe, fittings, collars, and all other materials necessary to complete the connections.; Subdrain Plastic Pipe - 6" DIAMETER; 2 Subdrain Plastic Pipe - 8" DIAMETER; 3 Subdrain Plastic Pipe - 10" DIAMETER; 4 Subdrain Plastic Pipe - 12" DIAMETER
