1. ALA (American Lifelines Alliance). 2001. “Guidelines for the design of buried steel pipe.” Accessed January 14 2020. https://www.americanlifelinesalliance.com/pdf/Update061305.pdf.
2. Alam, S., and E. N. Alloche. 2010. “Experimental investigation of pipe soil friction coefficients for direct buried PVC pipes.” In Vol. 2 of Pipeline Division Specialty Conf. 2010, 1160–1169. Keystone, CO: ASCE.
3. Anderson, C., D. Wijewickreme, C. Ventura, and A. Mitchell. 2004. “Full-scale laboratory testing of buried polyethylene gas distribution pipelines subject to lateral ground displacements.” In Proc., 13th World Conf. on Earthquake Engineering, 33–37. Vancouver, BC: Canadian Association of Earthquake Engineering. Paper 1543.
4. ASCE. 1984. Guidelines for the seismic design of oil and gas pipeline systems. Committee on Gas and Liquid Fuel Lifelines Technical Council on Lifeline Earthquake Engineering. New York: ASCE.
5. ASTM. 2003. Standard test method for laboratory compaction characteristics of soil using standard effort. ASTM D698. West Conshohocken, PA: ASTM.