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Design Reinforced Concrete Pipe - ladpw.org
ladpw.orgSection I - Reinforced Concrete Pipe I-3.3 Live loads I-3.3.1 Highway Loads Pipe conduits shall be designed for one HS20-44 truck per lane except where passing beneath railroad tracks. The wheel loads shall be distributed through the fill to the top of the pipe as follows: Transverse (with reference to truck) spread of wheels = 1.67+1.75F