Wsud Engineering Procedures: Stormwater

Melbourne Water0643090924, 0643092234

This manual is designed to give practical engineering solutions to engineers who need to implement Water Sensitive Urban Design (WSUD) Guidelines. It is specifically aimed at the engineer who is given the task of implementing conceptual designs, referral agencies who assess these designs and local government who will be responsible for the maintenance of the systems. The manual includes a review of existing documents, design procedures for construction and maintenance, and checking tools, as well as worked examples and engineering plans for commonly used treatment elements including: Sediment basins On-site retention (infiltration) Swale/bioretention combinations Bioretention basins Buffer strips Swale systems Constructed wetlands Ponds/lakes Rainwater tanks (sizing for demand) Sand filters Aquifer storage and recovery

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Table of contents :
EEn……Page 1
Water Sensitive Urban Design Engineering Procedures – Stormwater……Page 2
Copyright Info……Page 6
Acknowledgements……Page 7
TOC……Page 9
1.1 Purpose of the Manual WSUD Engineering Procedures:……Page 19
1.3 Manual contents……Page 20
1.4.2 Referral authorities……Page 22
1.5.3 Stormwater Management Manual……Page 23
1.6 References……Page 24
2.2 Approach to regionalisation……Page 25
2.3 Determining hydrologic design regions……Page 26
2.4 Hydrologic region adjustment factors……Page 27
2.5 Example application of mean annual rainfall method……Page 28
2.6 References……Page 29
3.1 Introduction……Page 31
3.2 Sediment basins……Page 32
3.3 Bioretention swales……Page 33
3.5 Sand .lters……Page 34
3.7 Constructed wetlands……Page 36
3.8 Ponds……Page 38
3.10 Rainwater tanks……Page 39
3.12 References……Page 41
4.1 Introduction……Page 43
4.2 Verifying size for treatment……Page 44
4.3.1 Estimating design .ows……Page 45
4.3.2 Size and shape of sedimentation basins……Page 46
4.3.4 Hydraulic structures……Page 48
4.3.6 Vegetation speci.cation……Page 56
4.3.7 Design calculation summary……Page 57
4.4.1 Design assessment checklist……Page 58
4.4.2 Construction advice……Page 59
4.4.3 Construction checklist……Page 60
4.6.1 Worked example introduction……Page 61
4.6.2 Estimating design .ows……Page 63
4.6.3 Size and shape of sedimentation basin……Page 64
4.6.4 Hydraulic structure design……Page 65
4.6.5 Design calculation summary……Page 67
4.7 References……Page 68
5.1 Introduction……Page 69
5.2 Verifying size for treatment……Page 72
5.3.2 Swale design……Page 74
5.3.3 Inlet details……Page 76
5.3.4 Vegetation scour velocity check……Page 78
5.3.5 Size perforated collection pipes……Page 79
5.3.7 Soil media speci.cation……Page 81
5.3.9 Design calculation summary……Page 83
5.4.2 Construction advice……Page 84
5.4.3 Construction checklist……Page 87
5.5 Maintenance requirements……Page 88
5.6.1 Worked example introduction……Page 89
5.6.3 Estimating design .ows……Page 92
5.6.4 Swale design……Page 93
5.6.7 Sizing of perforated collection pipes……Page 94
5.6.8 Over.ow design……Page 95
5.6.10 Vegetation speci.cation……Page 96
5.6.11 Calculation summary……Page 97
5.7 References……Page 98
6.1 Introduction……Page 99
6.3.1 Estimating design .ows……Page 102
6.3.3 Vegetation scour velocity check……Page 104
6.3.4 Size of slotted collection pipes……Page 105
6.3.5 High-.ow route and bypass design……Page 106
6.3.6 Soil media speci.cation……Page 107
6.3.7 Vegetation speci.cation……Page 108
6.3.8 Design calculation summary……Page 109
6.4.2 Construction advice……Page 110
6.4.3 Construction checklist……Page 112
6.5 Maintenance requirements……Page 113
6.6.1 Worked example introduction……Page 114
6.6.3 Estimating design .ows……Page 116
6.6.5 Sizing of perforated collection pipes……Page 119
6.6.8 Vegetation speci.cation……Page 120
6.6.9 Calculation summary……Page 121
6.7 References……Page 122
7.1 Introduction……Page 123
7.3.1 Estimating design .ows……Page 126
7.3.2 Hydraulic structure details……Page 127
7.3.3 Size of slotted collection pipes……Page 131
7.3.5 Design calculation summary……Page 132
7.4 Checking tools……Page 133
7.4.2 Construction advice……Page 134
7.4.3 Construction checklist……Page 136
7.5 Maintenance requirements……Page 137
7.6.1 Worked example introduction……Page 138
7.6.3 Estimating design .ows……Page 139
7.6.4 Hydraulic structures……Page 140
7.6.6 Design calculation summary……Page 142
7.6.7 Construction drawings……Page 143
7.7 References……Page 145
8.1 Introduction……Page 147
8.2 Verifying size for treatment……Page 150
8.3.2 Dimensioning a swale……Page 154
8.3.4 Inlet details……Page 155
8.3.6 High-.ow route and over.ow design……Page 158
8.3.8 Design calculation summary……Page 159
8.4.2 Construction advice……Page 160
8.4.3 Construction checklist……Page 162
8.5 Maintenance requirements……Page 163
8.6.1 Worked example introduction……Page 164
8.6.4 Swale .ow capacity……Page 167
8.6.6 Velocity checks……Page 169
8.6.9 Calculation summary……Page 170
8.7 References……Page 171
9.1 Introduction……Page 173
9.3 Design procedure: constructed wetlands……Page 175
9.3.3 Macrophyte zone layout……Page 178
9.3.4 Macrophyte zone outlet structure……Page 180
9.3.5 Connection to the inlet zone……Page 182
9.3.8 Designing to avoid mosquitos……Page 183
9.3.9 Design calculation summary……Page 184
9.4.2 Construction advice……Page 185
9.4.3 Construction checklist……Page 188
9.5 Maintenance requirements……Page 189
9.6.1 Worked example introduction……Page 190
9.6.2 Design objectives……Page 191
9.6.3 Design calculations……Page 192
9.6.4 Design calculation summary……Page 198
9.6.5 Construction drawings……Page 199
9.6.6 Example inspection and maintenance schedule……Page 200
9.7 References……Page 201
10.1 Introduction……Page 203
10.2 Verifying size for treatment……Page 204
10.3.1 Hydrology……Page 205
10.3.2 Pond layout……Page 209
10.3.3 Hydraulic structures……Page 212
10.4.1 Design assessment checklist……Page 214
10.4.2 Construction advice……Page 216
10.4.3 Construction checklist……Page 218
10.5.1 Operation and maintenance inspection form……Page 219
10.6.2 Design considerations……Page 220
10.6.4 Design calculations……Page 222
10.6.5 Example maintenance schedule……Page 229
10.7 References……Page 231
11.1 Introduction……Page 233
11.3.1 Checking .eld conditions……Page 234
11.3.2 Estimating design .ows……Page 236
11.3.5 Sizing the detention storage……Page 237
11.4 Checking tools……Page 238
11.4.1 Design assessment checklist……Page 239
11.4.2 Construction advice……Page 240
11.4.3 Construction checklist……Page 241
11.5 Maintenance requirements……Page 242
11.6.1 Worked example introduction……Page 243
11.6.5 Source treatment……Page 245
11.6.6 Sizing the detention storage……Page 246
11.6.7 Hydraulic structures……Page 247
11.6.8 Design calculation summary……Page 249
11.7 References……Page 250
12.1 Introduction……Page 251
12.2.1 Supply and demand considerations……Page 252
12.2.2 Water quality……Page 253
12.2.5 Available space considerations……Page 254
12.3 Australian standards for installation of rainwater tank……Page 255
12.4.1 Selection of end-uses……Page 256
12.4.2 Tank size and supply reliability……Page 257
12.4.3 Tank con.guration……Page 261
12.6 Inspection and maintenance schedule……Page 262
12.7 References……Page 263
13.1 Introduction……Page 265
13.3 Treatment and pollution control……Page 266
13.3.1 Knowledge of pollutant sources in the catchment upstream……Page 267
13.3.7 Discharge of well development/redevelopment water……Page 268
13.6 Additional information……Page 269
13.7 References……Page 270
14.2 Subsurface wetlands……Page 271
14.3.1 Selection issues……Page 273
14.4.1 Description……Page 277
14.4.2 Studies of performance……Page 278
14.4.4 Capital costs and maintenance costs……Page 279
14.4.6 Design and supply of porous pavements……Page 280
14.6 References……Page 281
A.1 Introduction……Page 283
A.2 Bioretention systems, swales and buffer strips……Page 284
A.2.3 Required plant characteristics……Page 285
A.2.4 Plant species selection……Page 286
A.3.1 Importance of vegetation……Page 287
A.3.3 Plant species selection……Page 288
A.3.4 Wetland vegetation establishment……Page 289
A.4.1 Additional notes on the tables……Page 291
A.4.2 Key to plant species (Tables A.1 and A.2)……Page 292
A.4.3 References……Page 293
Glossary……Page 304