Gabion basket retaining wall & existing CMP culvert interface
Gabion basket retaining wall & existing CMP culvert interface
(OP)
Hi all,
I am looking at constructing a gabion basket retaining wall along a rural portion of a roadway at a stream crossing. The stream has an existing 72" tall x 106" wide elliptical culvert to convey flow under the roadway. The gabion basket wall would be utilized to help with some slope erosion and to limit the amount to grading (trying to keep within existing road right-of-way). The existing culvert would extend beyond the proposed location of the gabion basket walls (approx 10' on the upstream side and 7' on the downstream side). My issue is that due to the size of the culvert, I can not construct a concrete headwall to the existing culvert. How would the gabion baskets interface with the culvert? Would I detail "custom" baskets (in a trapezoidal shape)? Or is there a flange (angle iron) type of attachment to the culvert to prevent soil migration from between the baskets and culvert? Any help information would be greatly appreciated. Thanks in advance!
I am looking at constructing a gabion basket retaining wall along a rural portion of a roadway at a stream crossing. The stream has an existing 72" tall x 106" wide elliptical culvert to convey flow under the roadway. The gabion basket wall would be utilized to help with some slope erosion and to limit the amount to grading (trying to keep within existing road right-of-way). The existing culvert would extend beyond the proposed location of the gabion basket walls (approx 10' on the upstream side and 7' on the downstream side). My issue is that due to the size of the culvert, I can not construct a concrete headwall to the existing culvert. How would the gabion baskets interface with the culvert? Would I detail "custom" baskets (in a trapezoidal shape)? Or is there a flange (angle iron) type of attachment to the culvert to prevent soil migration from between the baskets and culvert? Any help information would be greatly appreciated. Thanks in advance!





RE: Gabion basket retaining wall & existing CMP culvert interface
RE: Gabion basket retaining wall & existing CMP culvert interface
RE: Gabion basket retaining wall & existing CMP culvert interface
Can you post a plan and profile of the pipe? I am thinking that If you set the headway back from the end of pipe your work would be out of the existing stream. Use BMPs to proctect the stream, just a thought.