1. Standard Test Method for Determination of External Loading Characteristics of Plastic Pipe by Parallel-Plate Loading;ASTM D 2412,2011
2. Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System);ASTM D2487,2011
3. Standard Specification for Polyethylene Plastics Pipe and Fittings Materials;ASTM D 3350,2012
4. Standard Test Method for Melting and Crystallization Temperatures by Thermal Analysis;ASTM E 794,2006
5. The performance of a laboratory facility for evaluating the structural response small diameter buried pipes;Brachman;Can. Geotech. J.,2001