must be at least _______ inches in Drains that serve subsoil drains or length. areaways of detached building may 8 discharge to a properly graded open 16 area unless _______. 24 the neighbor doesn’t approve it 32 the plumber doesn’t approve it 36 they’re serving a flowing spring It is mandatory to install _______ in a the flow is blocked by large tree subsoil drain line that discharges into a or shrub storm drain if the drain line is subject to none of the answers provided backflow. a backwater valve A detached building areaway drain a quick-disconnect device must discharge _______ or to a a shutoff valve properly graded open area. an expansion joint adjacent to a a gate valve
must be at least _______ inches in length. 8 16 24 32 36 It is mandatory to install _______ in a subsoil drain line that discharges into a storm drain if the drain line is subject to backflow. a backwater valve a quick-disconnect device a shutoff valve an expansion joint a gate valve Drains that serve subsoil drains or areaways of detached building may discharge to a properly graded open area unless _______. the neighbor doesn’t approve it the plumber doesn’t approve it they’re serving a flowing spring the flow is blocked by large tree or shrub none of the answers provided A detached building areaway drain must discharge _______ or to a properly graded open area. adjacent to a