1. AASHTO. 2010. AASHTO LRFD bridge design specifications. 5th ed. American Association of State Highway and Transportation Officials (AASHTO), Washington, D.C.
2. Test Methods for Concrete Pipe, Manhole Sections, or Tile
3. Test Method for Concrete Pipe Sewerlines by Negative Air Pressure (Vacuum) Test Method
4. ASTM. 2005. Standard specification for joints for circular concrete pipe and manholes, using rubber gasket. ASTM C443-05. ASTM International, West Conshohocken, Pa.
5. ASTM. 2006. Standard specification for joints for concrete gravity flow sewer pipe, using rubber gaskets. ASTM standard C1628-06. ASTM International, West Conshohocken, Pa.