MANHOLE CASTING REFERENCE GUIDE
MANHOLE CASTINGREFERENCE ........................................ ........2Load ........................................ .....................3Key Dimensions of Round Frame and Cover ................3Key Dimensions of Inlet Frame and Grate ....................4Frame Designs ........................................ ......................5Grate Designs ........................................ .......................6Curb Inlets or Combination Inlets .................................7Watert ight Frames and Covers .....................................8Ai rport Castings ........................................ .....................8Manhole Features.
recycled material content of 85%. All manufacturers should provide material certifications on product that includes country of origin and material quality and if requested, shall provide load test data on the casting. Gray Iron Iron conforming to ASTM A48, Class 35B, as noted in section 7.1.1 and 7.1.3 of AASHTO M306. Class 35B exhibits
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