Concrete Pipe & Box Culvert Installation - Shaw Precast Solutions

ations and is best obtained from the pipe manufacturer.Radius pipe, also referred to as beveled or miteredpipe, incorporates the deflection angle into thepipe joint. The pipe is manufactured by shorteningone side of the pipe and the amount of shorteningfor any given pipe is dependent on manufacturingfeasibility. Because of the possibility of greaterdeflection angles per joint, sharper curvature withcorrespondingly shorter radii can be obtained withradius pipe than with deflected straight pipe.When establishing alignment for radius pipe, thefirst section of radius pipe should begin within onehalf of a radius pipe length of the point of curvature,and the last section of the radius pipe shouldextend one half of a radius pipe length beyond thepoint of tangent, as shown in the illustration Alignmentfor Radius Pipe.Special precast sections can be used for extremelyshort radius curves which cannot be negotiatedwith either deflected straight pipe or withconventional radius pipe. Sharper curves can behandled by using special short lengths of radiuspipe rather than standard lengths.One or more of these methods may be employedto meet the most severe alignment requirements.Since manufacturing processes and local standardsvary, local concrete pipe manufacturers should beconsulted to determine the availability and geometricconfiguration of pipe sections to be installed oncurved alignment. In addition, many manufacturershave standardized joint configurations and deflectionsfor specific radii and economies may be realizedby using standard pipe.American Concrete Pipe Association • www.concrete-pipe.org 47