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Last modified
11/23/2009 10:39:42 AM
Creation date
10/4/2006 9:52:33 PM
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Template:
Floodplain Documents
County
Statewide
Community
State of Colorado
Stream Name
All
Title
Hydraulic Design of Improved Inlets for Culverts
Date
9/1/1981
Prepared For
USDOT
Prepared By
Federal Highway Administration
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />Symbol <br /> <br />Uni ts <br /> <br />f <br /> <br />FALL <br /> <br />ft. <br /> <br />g <br /> <br />ft. /sec. /sec. <br /> <br />H <br /> <br />ft. <br /> <br />Hb ft. <br />Hc ft. <br />Hf ft. <br />Ht ft. <br />H* ft. <br />HG Line ft. <br />HW ft. <br /> <br />HWc <br /> <br />ft. <br /> <br />HWf <br /> <br />ft. <br /> <br />HWo <br /> <br />ft. <br /> <br />Description <br /> <br />Darcy resistance factor <br /> <br />Aproximate depression of control <br />section below the stream bed- <br /> <br />Acceleration of gravity = 32.2 <br /> <br />Head or energy required to pass <br />a given quantity of water <br />thr(- gh a culvert flowing in <br />outlet control <br /> <br />Depth of pool, or head, above <br />the bend section invert <br /> <br />Depth of pool, or head, above <br />the cres t <br /> <br />Depth of pool, or head, above <br />the face section invert <br /> <br />Depth of pool, or head, above <br />the throat section invert <br /> <br />Specific head at minimum energy <br /> <br />Hydraulic grade line <br /> <br />Headwater elevation; subscript <br />indicates control section (HW, <br />as used in HEC # 5, is a depth <br />and is equivalent to Hf in this <br />Ci rcular) <br /> <br />Headwater elevation required <br />for flow to pass crest in crest <br />control <br /> <br />Headwater elevation required <br />for flow to pass face section <br />in face control <br /> <br />Headwater elevation required for <br />culvert to pass flow in outlet <br />control <br /> <br />viii <br /> <br />e <br /> <br />. <br /> <br />~ <br /> <br />e <br /> <br />. <br /> <br />" <br /> <br />e <br />
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