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C857-19 Standard Practice for Minimum Structural Design Loading for Underground Precast Concrete Utility Structures
C858-19 Standard Specification for Underground Precast Concrete Utility Structures
C891-20 Standard Practice for Installation of Underground Precast Concrete Utility Structures
C1037-16 Standard Practice for Inspection of Underground Precast Concrete Utility Structures
C1802-20 Standard Specification for Design, Testing, Manufacture, Selection, and Installation of Horizontal Fabricated Metal Access Hatches for Utility, Water, and Wastewater Structures
