Concrete Pipe & Box Culvert Installation - Shaw Precast Solutions

IV. APPENDIXDEFINITIONSBackfill or Side Fill: the layer of soil placed aroundor above the pipe or box unit.Bedding: the material used to cushion and evenlydistribute the soil reaction at the bottom of thestructure.Bell End: that portion of the end of the pipe or boxunit, regardless of its shape or dimensions,which overlaps a portion of the end of the adjoiningpipe or box culvert.Box Culvert/Section: A culvert with a rectangularcross sectionConcrete: a homogeneous mixture of Portland cement,fine aggregate, coarse aggregate, andwater. The mixture may also contain admixtures,or other cementitious materials, or both.Culvert: a pipeline or box intended to convey waterunder a highway, railroad, canal, or similarfacility.External Sealing Bands: flexible wrappings thatare applied to the outside of a concrete pipe,box section, or manhole section joint intendedto control the movement of fluids or solidsthrough the joint.Gradation: the distribution of particles of granularmaterial among standard sizes usually expressedin terms of cumulative percentageslarger or smaller than each of a series of sieveopenings.Handling Reinforcement: reinforcement intendedto reduce the risk of collapse of the pipe or sectionduring handling or storage prior to and duringfinal placement.Infiltration: the volume of groundwater entering aAmerican Concrete Pipe Association • www.concrete-pipe.org 87