Proposed Practice for Alternative Bidding of Highway Drainage Systems (2015) / Chapter Skim
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Pages 48-50
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From page 48... ...
48 Project Definition 7.1 Roadway and Geometrical The initial phase of use for the Recommended Practice is to define the project details. The fundamental roadway and geometrical parameters are compiled so that they are available for use in the design evaluations completed in Phases 2 and 3.
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From page 49... ...
49 • Maximum allowable flow velocity • Joint rating: soil tight, silt/fines tight, or water tight • End treatments • Section variations (e.g., bends, junctions, wyes, transitions) • Aquatic organism passage requirements Two default options for baseline pipe roughness categories are defined below, noting that agencies may use alternate default category names and representative minimum Manning's n values as preferred.
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From page 50... ...
50 and agency-specific guidance. It is convenient to include the geotechnical data needed for drainage system design in the scope of a pavement rehabilitation investigation.
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