emergency dike construction method

Interesting concept...

I think the Tees and fitting for pumps are an unecessary cost/compliction.
I think the water seeping into the sand is part of the reason the sand bag works as a barrier.

Del

I think you'd have a problem after the first layer (which sounds good), in that the sand wouldn't stay along the centre-line of the second bolt - it would just run off to either side (unless the sides were supported somehow until they could be "sewn up").

Wouldn't you have to put a 2nd tube on the bottom then the 3rd tube on top in a pyramid formation to give it enough base to be stable enough for upper layers.

I like the concept. Since we are currently fighting the Mississippi & the Missouri Rivers here. I've been trying to figure out a better way of building sand bag walls.

How would you reinforce the areas around the grommets so that the weight of the sand wouldn't tear the fabric as you are tying the two sides together?

Yes as you say it is just a " concept " at this point . Ive been doing some thinking since my original post and have some revisions . The hemp canvas that ive described exists and is an extremely heavy weight oily type canvas. Whether its available in a bolt 16' wide is doubtful at this point in time ? The pronounced width is to accomodate the depositing (via frontloader) of sugar sand such that when the bag is sewn up its finished dimensions are 6' wide and 2' high .As for the 4" ID steel pipe along the centerline and the accompanying tee'd sections ,atop the centerline pipe there would need to be deposited some dry mix maybe 3/4's sand mix and 1/4 portland to keep the weight of the sand from distorting the pipe ?Also the tee'd sections could not be tee'd at all they would have to be 4 ways ? And the protrusions from the four ways would be 6' or 7' in length themselves to facilitate multiple layers of wonderboard ? The first layer to be about 18" from the bag(s) ? Steel re-enforcement such as rolled steel mesh wire would be placed between each layer of wonderboard prior to the pour . The csb would be saturated with water just before the pour and the only tourquing of threaded fasteners during concrete set up would occur at the outer most layer(s) of wonderboard on both sides of the csb? The end result being a wall 12' wide with a concrete expenditure of a 5' wide wall ?

www.superiorsandbagsystems.com

Lay a tarpaulin on the ground and lay Hesco barrier on top , fill the hesco with rock / sand / anything , lift the tarp up and tie it to the top of the hesco for waterproofing.
job done

These things are self explanatory but you could go up to 6 feet

I think these are best , fast to set up , low transport weight , seal the pressure side with a tarp and the water compresses the seal if they are 40 degrees or lower

Long-term is when we find our dikes, barriers, and similar approaches to be just delaying tactics. 100-year and 500-year floods have all become more common than the predictions because of changing weather conditions (they are now 20-year and 50-year floods). Good soil in the river bottoms and flat areas all encourage regular agricultural use and construction of buildings, etc. Therefore we build levees, but this limits the area over which water can flow, causing the "flood" heights to increase. The history of floods in the Mississippi river give good examples of this--I suspect that in the next 50 years or less that river will change channels at the Atchafalaya and completely bypass its existing mouth through New Orleans. A flood of the Mississippi river system 95 years ago destroyed or bypassed hundreds of miles of levees, with 1,000,000 people displaced for months and the waters covering areas as wide as 100 miles.

We think we can control the world. Not likely. Better to cooperate than compete, but that goes against our "nature".

Building thousands of small water retention ponds in farm lands has repeatedly shown substantial reduction in downstream flooding while also improving moisture content in the soils. Big dams have undesired side effects such as depleting soil downstream, becoming filled with sediment, blocking fish migration, etc.--although they do control flooding up to a certain point when they can be over-topped and fail catastrophically or their spillways overflow and massive flooding occurs downstream.