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2. Concrete Pipe Design Manual;American Concrete Pipe Association (ACPA),2011
3. ASCE 15-98, American Society of Civil Engineers, “Standard Practice for Direct Design of Buried Precast Concrete Pipe Using Standard Installations SIDD”, American Society of Civil Engineers, Reston, Virginia, 2000, 50p.
4. ASTM C76-13, Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe, American Society for Testing and Materials, ASTM International, West Conshohocken, PA, 2013, 11p.
5. ASTM C1765-13, Standard Specification for Steel Fibre Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe, American Society for Testing and Materials, ASTM International, West Conshohocken, PA, 2013, 6p.