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Updated Structure Design Manual, April 1982 Page I-1 DRAFT Revise January 10, 2008 Section I - Reinforced Concrete Pipe DRAFT Section I Design of Reinforced Concrete Pipe I-1 Standard Installations The methods to be used for design of reinforced concrete pipe are the Indirect Design and Direct Design methods. The D-Load Tables that appear on 1982 Ver. Manual pages S-38 through S-64 are based on conservative principles using Marston-Spangler formulas developed in the 1930s. These tables may be used for reference and design should be based on the methods that appear in this update.

distributed through the fill to the top of the pipe as follows: Transverse (with reference to truck) spread of wheels = 1.67+1.75F Longitudinal (with reference to truck) spread of wheels = 0.83+1.75F Where F = depth of fill over top of conduit in feet. 1. Truck loads on pipe conduits for covers of 8 feet and less are as follows:

  Conduit, Fill