Hi. I want to renovate my backyard in Florida and install a fence. It has a seawall and a canal in the back. The first step would be to improve the drainage and prevent erosion. Then I want to flatten the ground a bit, extend the paved patio, add garden beds and lay artificial grass with gravel base.
The red lines are the drainage pipes and the yellow arrows is the slope direction.
Could you please advise if the attached drainage plan is okay or if there’s anything you would do different?
Are the perforated corrugated pipes along the seawall fine (socked with gravel geotextile fabric) or would you do solid perforated pipes? If so should I lay the holed facing up or down?
https://imgur.com/a/ksuy4Rm
Thank you
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Send a picture most of us don't want to open an unknown website
I had issues with uploading it due to size. I just added the picture.
My one concern is how far above high tide are your outlets to the canal? I've always laid drain pipe holes down. My perference is solid pipe because it drains better.
Thank you.
The canal is not affected by tides, it's just an inland stormwater retention canal. I might put a backflow preventer at the outlet so that water doesn't sit inside the pipes when the water level rises during heavy storms. At the moment the water is 3' below the top seawall cap, in rainy season it ocassionally goes up 1-2'. It might flood in hurricanes/tropical storms. The highest it's been is 2' above the cap during Milton.
How about a pipe with holes on all sides so that it helps with rain runoff collection and with hydrostatic pressure?