SW1220801_Stormwater Report_20230214 (5)

Appendices
Rip Rap Apron Sizing
Phase 1 Erosion Control
Do = 12"
10 Year Discharge = 3 cfs
3Do = 3'
in- ---TT La = 6'
3 5 10 20 50 100 200 500 1000
Discharge (ft3/sec)
Curves may not be extrapolated.
Figure 8.06a Design of outlet protection protection from a round pipe flowing full, minimum tailwater condition (Tw < 0.5 diameter).
Rev. 12/93 8.06.3

Appendices
Rip Rap Apron Sizing
Phase 2 Erosion Control
Do = 18"
10 Year Discharge = 8 cfs
3Do = 4.5'
in- La = 10'
3 5 10 20 50 100 200 500 1000
Discharge (ft3/sec)
Curves may not be extrapolated.
Figure 8.06a Design of outlet protection protection from a round pipe flowing full, minimum tailwater condition (Tw < 0.5 diameter).
Rev. 12/93 8.06.3