Curb pipe underdrains shall be required on both sides of all streets and indicated on the construction drawings unless specifically waived by the Road Commissioner based upon adequate geotechnical information obtained from subgrade testing as required in Section 1105.16 of these Regulations. Curb pipe underdrains shall be installed prior to the placement of the aggregate base and constructed in accordance with the details of Section 1105.33 “Typical Residential Street Sections” of these Regulations. The pipe underdrains shall be 4-inch Sch. 40 perforated PVC tied into storm sewer structures with a slope to ensure positive flow.
(Ord. 56-2005. Passed 10-3-05.)