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<br />TABLE OF CONTENTS
<br />
<br />4,0
<br />
<br />DRAINAGE CRITERIA MANUAL (V. 1)
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<br />3.3
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<br />3,2,8.3 Grass-Lined Channel Design ,..............................................,.......MD-28
<br />Choice of Channel Type and Alignment.........................,...................................,.......MD-30
<br />3.3.1 Types of Channels for Major Drainageways ,...................,............................MD-30
<br />3,3.2 Factors to Consider in Selection of Channel Type and
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<br />Alignment .,."... ,.. .,' .,."... .,. ..,,'. ."... .",.,. .,. .,.",.",.. .".,.".. ."... ,. .,."... .".,. .".., ",.., MD-35
<br />3.3,3 Environmental Permitting Issues ........,.......................................................... MD-37
<br />3,3.4 Maintenance ,..",.. .".. .". ...,.,..,.. ."... ,."., ."...",.",. ..".,.".,.',. ."... .". ..'",.. .",. .",.. MD-37
<br />Design Flows ",.,.",.. .',.",.. .".,.". .."...., .,.". .,.",. ..",...,.,.",.. .".. .',.,.",.",.. .',....". .,..". .".. MD-38
<br />Choice of Channel Lining,... .".. ."..",.",... .". .,. .".. .". .",.,.".. .,...",.. .",."... .".,. .". .,..,.. .". MD-38
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<br />3.4
<br />3,5
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<br />OPEN-CHANNEL DESIGN CRITERIA ...........,..........................................,............................MD-43
<br />4,1 Grass-Lined Channels ... ..... ................ ..,.. ...... ......................................... .......,............ MD-43
<br />4,1,1 Design Cr~eria .........................,.................,.............,..................................... MD-43
<br />4,1,1,1 Design Velocity and Froude number .........,..............,.......,........... MD-43
<br />4.1,1.2 Design Depths ................,............,.....................,..........................MD-43
<br />4.1.1,3 Design Slopes...............................................................................MD-43
<br />4.1,1.4 Curvature ,..............................,.........................,............................MD-44
<br />4.1.1.5 Design Discharge Freeboard ....,...................,..................,...........,MD-44
<br />4,1,2 Grass and Vegetation Selection and Use ...........,.............,.............,.............MD-44
<br />4,1,3 Channel Cross Sections ............................. ,.............,...........................,....,.., MD-44
<br />4,1,3.1 Side Slopes..,....,...........................................................................MD-44
<br />4,1,3.2 Depth.. .......,............. .................... ............ ...... ............................... MD-44
<br />4.1.3,3 Bottom Width ................................................................................MD-44
<br />4,1.3.4 Trickle and Low-Flow Channels ............................,......................MD-44
<br />4,1,3.5 Outfalls Into Channel..,.............,..........................,..,....................,MD-45
<br />4.1.4 Roughness Coefficients........................................,...................,..............,....,MD-45
<br />4,1,5 Trickle and Low-Flow Channels ..............,.................,..............,....................MD-45
<br />4,1,6 Erosion Control...............................................,.....................,.....................,.. MD-46
<br />4,1,7 Water Surface Profile....,..,........................................,.........,..........................MD-47
<br />4,1.8 Maintenance ..,..........,.......................................,............................................MD-47
<br />4,1,9 Calculation Tool..................................................................,..,.......................MD-48
<br />4,1,10 Design Submittal Checklist..,.........,.....................,.........................,.......,......,MD-49
<br />4.2 Composite Channels ,. .".,.". .."....,....,.. .".... .". ..",.,.,..",.,.". ..".,.,,'. .,..,. ."..",.,. .,'. .",.,.. MD-50
<br />4,2,1 Design Criteria ...........................,..........................,..........,..,.....................,.... MD-50
<br />4.2,2 Design Procedure ......... ..................................... ....,.. ..........,.... .......... ...... ..,.., MD-51
<br />4.2.3 Life Expectancy and Maintenance....................................,.........................,..MD-52
<br />4,2.4 Calculation Example ,.... ........ ............ ............. ................................ ................ MD-52
<br />4,2.5 Design Submittal Checklist...................................................,.....................,..MD-53
<br />4,3 Concrete-Lined Channels"...",..."...,...",.,.",.,.",...",."..,.".,."....".",...",...".".",.",.... MD-54
<br />4.3,1 Design Cr~eria .............. ......... ..,... ..... ..... ....,..,.... .......................,........ ............ MD-55
<br />4,3,1.1 Design Veloclty..............................,..........................................,...MD-55
<br />4.3,1.2 Design Depths ...............................................................,....,.........MD-55
<br />4,3,1,3 Curvature ...................................................................................,..MD-55
<br />4.3,1.4 Design Discharge Freeboard..........,.....................................,....,..MD-56
<br />4.3.2 Concrete Lining Specifications ,........,...............................,........,..MD-56
<br />4,3.2,1 Concrete Lining Sectlon.....,..............,....,......................................MD-56
<br />4,3.2.2 Concrete Joints... ....,........ .........,..,....... ..... ................ ..,................. MD-56
<br />4,3.2.3 Concrete Finish..,..."....",.,."....,.,."....".,."....,..",.,.."...".,."..."..,., M D-57
<br />4,3.2.4 Underdraln ..., ........ ..,........ ........,....... ..... ............... ....,........ ..,......... MD-57
<br />4,3,3 Channel Cross Section..................................................................................MD-57
<br />4.3,3.1 Side Slopes...................................................,.......,................,...... MD-57
<br />4,3,3,2 Depth ........ ..... ................ ...... ...., ............... ...,................. ................ MD-57
<br />4.3,3,3 Bottom Width .........,...........................................................,..........MD-57
<br />4.3.3.4 Trickle and Low-Flow Channels ..........,..,.........,...................,.......MD-57
<br />4,3.3.5 Outfalls Into Channel ....................,........,......................................MD-57
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<br />TOC-x
<br />Urban Drainage and Flood Control District
<br />
<br />6/2001
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