Culvert Question

[justinramani]

Yep. Let it settle so you know you aren't going to have to add more fill material before you rip rap the ends. Looking good. Anxious to see the rest of the roadway develop.

Well - we had our first rain since the culverts were installed. Flow through the pipe is up about 100%. It's amazing how much water a night of rain can create. The ground is starting to settle - i have a small area of sand near the pipe that was washed out a litte.

So far I am pretty happy with the progress. A I am looking to get a box blade for the tractor. That should help me smooth things out a little.

 

[GPintheMitten]

Good to see the pictures and progress.

 

[vtsnowedin]

I Local, state, and fed govs can be pretty picky about any work that impacts wetlands, stream flow, or storm runoff and they don't have a sense of humor about that stuff.

You have that right!

 

[justinramani]

You have that right!

Its funny that you say that. One of the guys doing the work at our place could not believe that we involved the Corps of Engineers. His comment - "You NEVER involve them!" Followed by his own admission that he has been shut down by them before from people who didn't follow the rules....

Why would you risk it? They were really helpful and went out of their way to help us out. I felt way more comfortable after meeting with them.

 

[FTG-05]

Well - we had our first rain since the culverts were installed. Flow through the pipe is up about 100%. It's amazing how much water a night of rain can create. The ground is starting to settle - i have a small area of sand near the pipe that was washed out a litte.

So far I am pretty happy with the progress. A I am looking to get a box blade for the tractor. That should help me smooth things out a little.

What does that mean?

If it means the pipe was 100% full - and it did it on the very first rain - then it sounds like you didn't size the pipe correctly. However, I could be misinterpreting what you're saying.

 

[justinramani]

What does that mean?

If it means the pipe was 100% full - and it did it on the very first rain - then it sounds like you didn't size the pipe correctly. However, I could be misinterpreting what you're saying.

Oh no - the pipe was only maybe at 5 - 10% capacity. I was saying that the amount of water flow through the pipe was about double that of the pre-rain flow rate.

 

[FTG-05]

Whew! OK, glad we got that straightened out! Looks like you did a good job then!

:drink:

 

[justinramani]

The wife and I were out of town for a few days. It must have rained while we were gone because we came back to a road that has partially washed out :smiley_aafz:

While I expected that we would have some settling - this looks more like a problem that is going to happen again and again whenever it rains. We really are not in a position to have the road improved right now. We would like to keep it passable and ensure that the culvert remains in place and functioning properly.

You can clearly see where water was traveling down the road - thereby causing the washout. What can we do to stop this from happening? Will more riprap help? Maybe building a small wall out of concrete bags?

The good news is that the inlet and outlet of the culvert are flowing well. The flow of water looks to be more "natural" than it was about a week ago.

I welcome all feedback!

 

[justinramani]

Duplicate post.

 

[RDrancher]

Set the highest elevation across the road above the pipe with no crown. Keep the road flat (side to side) but sloping downward away from the pipe in both directions. Then start the crown with the sides slowly dropping away from the crown. Ideally, the roadway should empty off the sides starting no sooner than 20' from the pipe.