Hydraulic Efficiency of Grate and Curb Inlets - Urban Drainage and ...

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Test ID Number Configuration Table B-6: 4% and 2% on-grade test data Longitudinal Slope (%) Cross Slope (%) Flow Depth (ft) Prototype Total Flow (cfs) Efficiency (%) Top Width at Control (ft) Top Width Downstream of Inlets (ft) 236 Triple No. 13 4 2 0.333 8.4 74.1 15.5 7.7 237 Triple No. 13 4 2 0.501 25.7 42.4 18.2 14.3 238 Triple No. 13 4 2 0.999 128.6 20.5 18.2 18.2 239 Double No. 13 4 2 0.333 8.3 66.0 15.5 7.8 240 Double No. 13 4 2 0.501 26.0 32.9 18.2 14.3 241 Double No. 13 4 2 0.999 127.8 15.9 18.2 18.2 242 Single No. 13 4 2 0.333 9.0 43.1 15.5 7.7 243 Single No. 13 4 2 0.501 27.3 20.6 18.2 13.7 244 Single No. 13 4 2 0.999 129.7 9.5 18.2 18.2 245 Single No. 13, Debris Test one 4 2 0.333 8.6 34.5 16.0 8.6 246 Single No. 13, Debris Test one 4 2 0.501 26.5 15.9 17.5 14.3 247 Single No. 13, Debris Test two 4 2 0.333 8.4 40.7 16.0 8 248 Single No. 13, Debris Test two 4 2 0.501 27.1 16.7 18.2 14.3 249 Single No. 13, Curb opening only 4 2 0.501 26.5 9.4 18.2 14.3 250 Single No. 13, Curb opening only 4 2 0.999 119.2 4.7 18.2 18.2 251 Single No. 13, Grate Only 4 2 0.501 21.8 19.3 18.2 9.8 252 Single No. 13, Grate Only 4 2 0.999 117.7 6.5 18.2 18.2 253 Single No. 13, Grate and 4-in. Opening 4 2 0.501 24.5 21.7 18.2 14.3 254 Single No. 13, Grate and 4-in. Opening 4 2 0.999 113.3 9.9 18.2 18.2 255 Single No. 16, Grate and 4-in. Opening 4 2 0.501 28.2 31.5 18.2 14.3 256 Single No. 16, Grate and 4-in. Opening 4 2 0.999 123.1 15.3 18.2 18.2 257 Single No. 16, Grate only 4 2 0.501 30.4 28.7 18.2 12.8 258 Single No. 16, Grate only 4 2 0.999 133.4 12.7 18.2 18.2 259 Single No. 16, Debris Test one 4 2 0.333 8.1 55.8 18.2 7.4 260 Single No. 16, Debris Test one 4 2 0.501 26.5 25.9 18.2 14.3 261 Single No. 16, Debris Test two 4 2 0.333 8.1 48.1 18.2 8 262 Single No. 16, Debris Test two 4 2 0.501 26.8 17.4 18.2 14.3 263 Single No. 16 4 2 0.333 7.5 64.6 14.6 7.8 264 Single No. 16 4 2 0.501 28.1 31.7 18.2 14.3 265 Single No. 16 4 2 0.999 129.4 15.7 18.2 18.2 266 Double No. 16 4 2 0.333 8.7 67.9 14.6 7.8 267 Double No. 16 4 2 0.501 26.5 37.6 18.2 14.3 268 Double No. 16 4 2 0.999 130.9 24.6 18.2 18.2 269 Triple No. 16 4 2 0.333 8.4 74.1 14.6 7.7 270 Triple No. 16 4 2 0.501 25.7 43.6 18.2 14.3 271 Triple No. 16 4 2 0.999 127.8 29.0 18.2 18.2 272 5-ft Type R (R5) 4 2 0.333 8.1 34.6 16.0 8.6 273 5-ft Type R (R5) 4 2 0.501 26.7 17.0 18.2 14.3 274 5-ft Type R (R5) 4 2 0.999 118.9 7.9 18.2 18.2 275 5-ft Type R (R5), w/ 4-in. Curb Opening 4 2 0.501 27.4 16.5 18.2 14.3 276 5-ft Type R (R5), w/ 4-in. Curb Opening 4 2 0.999 128.6 6.2 18.2 18.2 102
Test ID Number Configuration Longitudinal Slope (%) Cross Slope (%) Flow Depth (ft) Prototype Total Flow (cfs) Efficiency (%) Top Width at Control (ft) Top Width Downstream 277 5-ft Type R (R5), w/ Horizontal Safety Bar 4 2 0.501 26.7 16.4 18.2 14.3 278 9-ft Type R (R9) 4 2 0.333 7.9 62.7 16.0 8.6 279 9-ft Type R (R9) 4 2 0.501 25.9 30.1 18.2 14.3 280 9-ft Type R (R9) 4 2 0.999 117.7 13.2 18.2 18.2 281 12-ft Type R (R12) 4 2 0.333 8.7 69.6 16.0 8 282 12-ft Type R (R12) 4 2 0.501 25.3 38.3 18.2 14.3 283 12-ft Type R (R12) 4 2 0.999 113.8 18.2 18.2 18.2 284 15-ft Type R (R15) 4 2 0.333 7.8 80.0 16.0 7.7 285 15-ft Type R (R15) 4 2 0.501 23.4 46.0 18.2 14.3 of Inlets (ft) 286 15-ft Type R (R15) 4 2 0.999 123.1 21.3 18.2 18.2 103
Page 1:
HYDRAULIC EFFICIENCY OF GRATE AND C
Page 5 and 6:
TABLE OF CONTENTS LIST OF FIGURES .
Page 7 and 8:
LIST OF FIGURES Figure 1-1: Map of
Page 9 and 10:
Figure 5-7: Predicted vs. observed
Page 11 and 12:
LIST OF TABLES Table 2-1: Summary o
Page 13 and 14:
LIST OF SYMBOLS, UNITS OF MEASURE,
Page 15 and 16:
S c , Sc, cross slope cross (or lat
Page 17 and 18:
ID mag meter No. QC ® R5 R9 R12 R1
Page 19 and 20:
1 INTRODUCTION A research program w
Page 21 and 22:
1-1 often require use of these thre
Page 23 and 24:
2 LITERATURE REVIEW Urban storm dra
Page 25 and 26:
• All grates showed patterns of i
Page 27 and 28:
Q = Q w + Q s Equation 2-1 where: 2
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Inlet Name Bar P-1-7/8 Bar P-1-7/8-
Page 31 and 32:
2.2.3 Curb Opening Inlets Curb open
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2.3 Manning’s Equation Uniform fl
Page 35 and 36:
where: q 1 = dependent parameter; q
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Q ⎛ L L Qw ⎞ = f ⎜ , ⎟ Equa
Page 40 and 41:
Headbox Pipe Network Inlets Street
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capacity. A similar study performed
Page 44 and 45:
Table 3-3: Test matrix for 0.33-ft
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Table 3-5: Test matrix for 1-ft pro
Page 48 and 49:
Solid Plexiglas ® was milled to pr
Page 50 and 51:
Figure 3-10: Triple No. 13 combinat
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Figure 3-16: Single No. 16 combinat
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Figure 3-22: Single No. 16 combinat
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Note Safety Bar Figure 3-28: R5 wit
Page 58 and 59:
Flow entering and exiting the model
Page 60 and 61:
Following a standardized testing pr
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4 DATA AND OBSERVATIONS Testing res
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Figure 4-2: Type 16 combination-inl
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45 40 35 Captured flow (cfs) 30 25
Page 69 and 70: 5 ANALYSIS AND RESULTS Data selecte
Page 71 and 72: likely due to the nature of the ori
Page 73 and 74: 1 Observed 0.9 0.8 0.7 0.6 0.5 0.4
Page 75 and 76: Total flow (Q) is known from the ob
Page 77 and 78: Observed 1 0.9 0.8 0.7 0.6 0.5 0.4
Page 79 and 80: 1 0.9 Observed 0.8 0.7 0.6 0.5 0.4
Page 81 and 82: The second Pi group is the square o
Page 83 and 84: Table 5-2: Empirical equations for
Page 85 and 86: Agreement is best at the smallest f
Page 87 and 88: Efficiency/base efficiency 2.2 2 1.
Page 89 and 90: were typically seen at higher flow
Page 91 and 92: Average difference in calculated ef
Page 93: Depth (ft) Table 5-3: Efficiency er
Page 96 and 97: test data for typical design depths
Page 98 and 99: Observed efficiency 1 0.9 0.8 0.7 0
Page 101: 7 REFERENCES Bos, M. G. (1989). Dis
Page 105 and 106: (P-1-7/8 grate does not have the 10
Page 107 and 108: Figure A-3: Curved vane grate (UDFC
Page 109 and 110: Figure A-5: 30º-tilt bar grate (UD
Page 111: APPENDIX B ON-GRADE TEST DATA 93
Page 114 and 115: Test ID Number Configuration Table
Page 116 and 117: Table B-3: 2% and 1% on-grade test
Page 118 and 119: Test ID Number Configuration Longit
Page 122 and 123: Table B-7: Additional debris tests
Page 124 and 125: 106
Page 126 and 127: For the additional sump tests, only
Page 128 and 129: 110
Page 130 and 131: (a) (b) Figure D-2: Type 16 inlet s
Page 132 and 133: (a) (b) (c) Figure D-4: Type R curb
Page 134 and 135: 116
Page 136 and 137: Extent of Flow Station (x) Position
Page 138 and 139: 120
Page 140 and 141: Test ID Number depth (ft) Tw (ft) A
Page 142 and 143: Table F-2: Additional parameters fo
Page 148 and 149: 130
Page 150 and 151: 132
Page 152 and 153: Plot of rstudent*pred. Legend: A =
Page 154 and 155: The REG Procedure Model: MODEL1 Dep
Page 156 and 157: Plot of logE*pred. Legend: A = 1 ob
Page 158 and 159: Plot of rstudent*pred. Legend: A =
Page 160 and 161: 142
Page 162 and 163: 144
Page 164 and 165: Test ID Number Depth (ft) Grates Fl
Page 166 and 167: Test ID Number Depth (ft) Grates Fl
Page 168 and 169: Test ID Number Depth Length Flow Ef
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