1.A building sewer which conveys only storm water. 2. The horizontal piping of a storm drainage system which extends from the building storm drain, receives its discharge, and conveys it to the public storm sewer or other point of disposal.
1.A building sewer which conveys only storm water. 2. The horizontal piping of a storm drainage system which extends from the building storm drain, receives its discharge, and conveys it to the public storm sewer or other point of disposal.