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<br />DRAINAGE CRITERIA MANUAL (V, 2) <br /> <br />HYDRAULIC STRUCTURES <br /> <br />e <br /> <br />HS-13 Control Check for Stable Floodplain ........................................................................................ HS-60 <br /> <br />HS-14 General Design Dimensions Impact Stilling Basin (USBR Vi)................................................. HS-72 <br /> <br />HS-15 Basin Width Diagram for an Impact Stilling Basin (USBR VI)..................................................HS-73 <br /> <br />HS-16 Modifications of impact Stilling Basin to Allow Basin Drainage for Urban <br />Applications......................... ..................................................................,. .............. ................... HS-74 <br /> <br />HS-17 Baffle Chute Pipe Outlet......................................................,.................................................... HS-75 <br /> <br />HS-18a Low Tailwater Riprap Basins for Storm Sewer Pipe Outlets-Low Tailwater <br />Basin at Pipe Outlets...,.... ........... .......................................................... ............................... .... HS-76 <br /> <br />HS-18b Low Tailwater Riprap Basins for Storm Sewer Pipe Outlets-Discharge and <br />Flow Area Relationships for Circular and Rectangular Pipes .................................................. HS-77 <br /> <br /> HS-19 <br /> HS-20 <br /> HS-21 <br />e HS-22 <br /> HS-23 <br /> HS-24 <br /> HS-25 <br /> HS-26 <br /> HS-27 <br /> HS-28 <br /> <br />Low Tailwater Riprap Basins for Storm Sewer Pipe Outlets-Brink Depth for <br />Horizontal Pipe Outlets ..........................,..................................................,.............................. HS-78 <br /> <br />Low Tailwater Riprap Basins for Storm Sewer Pipe Outlets-Riprap Selection <br />Chart for Low Tailwater Basin at Pipe Outlet........................................................................... HS-79 <br /> <br />Normal Bridge Crossing Designation ....................................................................................... HS-87 <br /> <br />Base Curves for Wingwali Abutments....,................................................................................. HS-88 <br /> <br />Base Curves for Spillthrough Abutments ...................................,............................................. HS-88 <br /> <br />Incremental Backwater Coefficient for Pier .............................................................................. HS-89 <br /> <br />Transition Types.................................................................................... ................................... HS-93 <br /> <br />Channel Junction Definition Sketches .....................................................................................HS-98 <br /> <br />Rundown........ .......... ................................................................................. .............. ............... HS-1 01 <br /> <br />Hydraulic Jump Tailwater Stages as Related to Boating Hazards ........................................ HS-108 <br /> <br />Photographs <br /> <br />HS-1 Denver's Harvard Gulch Flood Control Project introduced the baffle chute <br />drop structure to urban flood control in 1966............................................................................. HS-1 <br /> <br />HS-2 The Clear Creek 1-25 vertical concrete drop structure was a "drowning <br />machine" until it was retrofitted by COOT with a 10:1 downstream face ...................................HS-2 <br /> <br />HS-3 Stepped grouted sloping boulder drop structures such as in Denver's <br />Bible Park can be safe and aesthetic besides performing their primary <br />hydraulic function of energy dissipation ..................................................................................... HS-5 <br /> <br />e <br /> <br />06/2001 <br />Urban Drainage & Flood Control District <br /> <br />HS-v <br />