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

Test ID
Number
Configuration
Longitudinal
Slope
(%)
Cross
Slope
(%)
Flow
Depth
(ft)
Prototype
Total
Flow
(cfs)
Efficiency
(%)
Top
Width
at
Control
(ft)
Top
Width
Downstream
196 5-ft Type R (R5), w/ Horizontal Safety Bar 2 2 0.501 23.1 18.2 18.2 18.2
197 9-ft Type R (R9) 2 2 0.333 6.2 65.0 11.0 6.8
198 9-ft Type R (R9) 2 2 0.501 21.8 33.6 18.2 14.3
199 9-ft Type R (R9) 2 2 0.999 166.0 11.6 18.2 18.2
200 12-ft Type R (R12) 2 2 0.333 7.5 70.8 14.0 9.8
201 12-ft Type R (R12) 2 2 0.501 21.7 42.4 18.2 15.8
202 12-ft Type R (R12) 2 2 0.999 166.8 15.2 18.2 18.2
203 15-ft Type R (R15) 2 2 0.333 7.0 84.4 14.0 8.3
204 15-ft Type R (R15) 2 2 0.501 21.5 48.6 18.2 15.8
of
Inlets
(ft)
205 15-ft Type R (R15) 2 2 0.999 166.8 18.8 18.2 18.2
100