Erosion and Sediment Pollution Control Program Manual.pdf

ENERGY DISSIPATER
Energy dissipaters are often used to reduce outlet velocity from pipe outfalls and box culverts where
anticipated velocities exceed the maximum permissible for other types of outlet protection. Design
procedures for two typical energy dissipaters are provided in Appendix F. Many other types of
dissipaters may be approved as long as supporting calculations are provided that show anticipated
velocities have been reduced to acceptable levels and details showing all critical dimensions are
provided on the plan drawings. Wherever dissipaters are proposed, they should be in place and
functional prior to directing any proposed discharge to that point.
PA DEP
363-2134-008 / March 31, 2012 / Page 251