Assertion: tank riser | /r/MadeOf | bottom seal
Facets:
value: against the septic tank
type: TRANSITIVE-OBJECT
Source sentences:
text: A septic tank riser consists of a bottom seal against the septic tank, a round large diameter material made of concrete, PVC (polyvinyl chloride), polyethylene, or occasionally steel that forms a "well" around the septic tank cleanout, and a cover that can be secured at ground level.