I doubt the 16g steel will be good enough.
I suggest you need at least 3mm , 1/8 inch hot dipped galvanised steel
Or 6mm raw steel painted.
Corrosion is the issue
William I am glag you are looking at a metal roof.
I simply do not understand why it is not the first choice for everybody.
Further, you speak of wanting to be able to just
I like the idea of just being able to tear the structure down and bury it.
Concrete can be poured into holes full of water.
Sometimes its done deliberately to prevent the form work collapsing.
BUT you need to pour the concrete mix down a chute to the bottom of the trench.
This causes the mix to stay as a mix and displace the water at the bottom.
By continuing to pour , lifting the chute until the concrete is at the level you want, the job will be perfect.
Its important to create a drain for the displaced fluid to run off to. Maybe a small dam to allow it to settle out the solids rather than have it go down a drain.
You can pour continuously
There are a number of factors you need to consider first.
Filters
- maybe run a series of larger to smaller filter medium so the filter does not block too quickly
- aim at large surface area filters to ease the effort required to push water through
- Consider disc filters which can be cleaned against cartridge filters which cannot.
Water flow
- check 5 to 6 gals per minute is what you need
- check 40 psi is needed.
Flow and pressure are linked.
A larger filter will make it esier to get a higher flow and pressure at the taps.
Each pump manufacture has charts which will show you the capacity of each pump and the operating pressure.
I am not sure if you will be able to get cahrts for filters that detail the pressure drop across the range of water volume through the filter, but look for them.
Dredging rivers has been shown to be the worst method of dealing with floods. The video is very good, it explains that by using berms or walls to divert the
flowing water away from where it can do damage, and letting still water just hang around, the destructive elements of floods can be addressed.
Rushing water has a lot of power, still water has little.
Sure having things inundated even if the water is still, is not helpful.
Willows etc will hold the bank against erosion up to a point, but flooding itself is often made worse by those upstream dredging etc to get the water away quicker.
By holding water back and letting it slowly resede is the natural and safest way to deal with floods.
Some questions?;
whats the issue with tyres?
What would stop big critters living in the tubes?
Would gravel foundations work better than concrete?
Have any diagrams or pictures please?
From my experience, I question the practicality of keeping such a small block from flooding without tons of earthworks.
Why buy a block that floods and then try to harness nature/
I get flooding at part of my farm, and its annoying if it goes higher than I have allowed for, but to stop that would be impractical.
I work around the flood area, but I have 20 acres, so its possible.
Can you just enjoy the block for what it is, put good gravel on the roads, berms to deflect running water from your house or shed and let nature deal with the rest.
Your neighbours works may in fact impact on your place by pushing flood waters to you.
Banks, flood waters and neighbours can be an explosive misx
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