HomeMy WebLinkAboutWPO202000058 Calculations 2021-03-05Chapter 8 - Culverts
Appendix 8C-1 Inlet Control, Circular Concrete
180 10,000 CHART 10
168 8.000 EXAMPLE (1) (2) (3)
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L.5 L- .5 L .5
L-12 HEADWATER DEPTH FOR
HEADWATER SCALES 253 CONCRETE PIPE CULVERTS
BUREAU DS NNLIC ROAM AY. ro43 REVISED MAY 1964 WITH INLET CONTROL
CULVERT INLET IS FOR PRIVATE SYSTEM.
TOTAL DEPTH OF WATER=2.6 x 3.0' = 7.8'
Source: HDS-5 INVERT AT HEADWALL = 406.0
MAX ELEVATION OF WATER IN 25 YR STORM = 413.8
"RIDGE" ELEVATION ADJACENT TO HEADWALL = 420.0
BASIN OUTFALL CONDITION DOES NOT CAUSE
FLOODING IN OUTFALL DEPRESSION AREA AT
CULVERT HEADWALL.
1 of 1 VDOT Drainage Manual