1. Standard Practice for Use of Scrap Tires in Civil Engineering Application,1998
2. Standard Test Method for Density and Unit Weight of Soil in Place by the Sand-cone Method,2007
3. Standard Practice for Underground Installation of Thermoplastic Pipe for Sewers and Other Gravity-flow Applications,2008
4. Standard Specification for Poly(Vinyl Chloride) (PVC) Corrugated Sewer Pipe With a Smooth Interior and Fittings,2006
5. Standard Specification for Type PSM Poly(Vinyl Chloride) (PVC) Sewer Pipe and Fittings,2008