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

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