1. AASHTO LRFD Bridge Design Specifications;American Association of State Highway and Transportation Officials (AASHTO),2008
2. PVC Pipe – Design and Installation, Manual of Water Supply Practices M23;American Water Works Association (AWWA),2002
3. Steel Pipe – a Guide for Design and Installation, Manual of Water Supply Practices M11;American Water Works Association (AWWA),2004
4. Concrete Pressure Pipe, Manual of Water Supply Practices M9;American Water Works Association (AWWA),2008
5. Geotechnical properties of waste excavation rock in pavement sub-base applications;Arulrajah;J. Mater. Civil Eng.,2011