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Document Designation and Title Year Select Item(s) C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 13 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 12a C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 12 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 11 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 10b C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 10a C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 10 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 09 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 08a C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 08 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 07 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 05a C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 05 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 02 C506 Standard Specification for Reinforced Concrete Arch Culvert, Storm Drain, and Sewer Pipe 00