Plunge Pool Design
Plunge Pool Design
(OP)
Hello All,
I'm currently working on a project requiring erosion protection. We have a 1.2m dia culvert discharging 3.7m3/s to a channel, 120m long @ 5.0% grade, 2.0m bottom width, 2:1 side slopes, approx 1.8m deep. This channel has an abrupt transition to approx 0% near the outlet to a environmentally sensitive creek. I'm trying to determine ways to 1) armour the channel with rap for erosion protection and 2) determine the best possible solution for erosion protection at the transition from 5% to 0%.
I was initially thinking a plunge pool may be appropriate for erosion protection and also reducing the velovity. I've been referencing HEC-11,14 and 15. The plunge pool design in HEC-14 is for a culvert outlet only. Could anyone recommend some additional information or provide any advice on desiging plunge pools or another method of erosion protection at the transition? Thank you in advance for your advice.
RYB
I'm currently working on a project requiring erosion protection. We have a 1.2m dia culvert discharging 3.7m3/s to a channel, 120m long @ 5.0% grade, 2.0m bottom width, 2:1 side slopes, approx 1.8m deep. This channel has an abrupt transition to approx 0% near the outlet to a environmentally sensitive creek. I'm trying to determine ways to 1) armour the channel with rap for erosion protection and 2) determine the best possible solution for erosion protection at the transition from 5% to 0%.
I was initially thinking a plunge pool may be appropriate for erosion protection and also reducing the velovity. I've been referencing HEC-11,14 and 15. The plunge pool design in HEC-14 is for a culvert outlet only. Could anyone recommend some additional information or provide any advice on desiging plunge pools or another method of erosion protection at the transition? Thank you in advance for your advice.
RYB





RE: Plunge Pool Design
RE: Plunge Pool Design
Mike McCann
MMC Engineering
RE: Plunge Pool Design
RE: Plunge Pool Design
Could anyone recommend a specific reference for this type of drop structure design?
cvg...i agree 1.8m looks high, this is the total channel depth(inv to TOB), flow depth is approx 1m.
Thanks again in advance for your help.
RE: Plunge Pool Design
RE: Plunge Pool Design