811 S. Woodrow Wilson Road, Plant City, Florida 33563 Customer Service 1-877-910-3727, Fax 1-866-329-3727 ASTM Reference Specifications:C443 - Standard Specification for Joints in Circular Concrete Sewer and Culvert Pipe, Using Rubber Gaskets.C497 - Test Methods for Concrete Pipe, Manhole Sections, or Tile supplier C1450 - Standard Specification for Non-Asbestos Fiber-Cement Concrete Drain PipeFDOT Reference Specifications:Section 125 - Excavation For Structures and PipeSection 430 - Pipe Culverts and Storm Sewers Section 449 - Precast Concrete Drainage ProductsLoad Classes: Shall be specified as Class I, Class II, Class III, Class IV and Class V. The minimum dry crush load (determined by the ASTM C497 three edge bearing test) shall not be less than a factor of 2.0 times the minimum long-term D-loads listed in the architectural table below:

Pipe ClassD Load Lb / ft /ft IIIIIIIVV 800 1000 1350 2000 3000