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Mar. 24th, 2008 @ 11:00 pm Contraptions
When My dad was here I tried to demonstrate how I could suck sand out from under the house and move it to the backyard using the big trash pump but he wondered off while I was trying to get the pump to pump because there must have been something shinier in the front yard and so I just let it sit and pumped the water out with the sump pump.

When it gets a good flow going it will move sand and water out about 150 feet to the back yard which saves a lot of walking and time. I was moving about a yard of sand in five minutes before I ran out of water and had to stop for twenty to fill the hole back up but if I got a second big pump like a two inch trash pump I should be able to pump water up from the lake into the hole and suck sand and water out with the three inch pump so If I managed to get it balanced I could just use a bobcat to scoop up the sand, drop it in the pit, and move it into the back yard where I need it. It works pretty well as far as making a nice grade as it fans out and the grass will grow up through it. When I get into the layer of clay I am thinking I could use the pit to mix it real good and make a thin slurry, then pump it into the layer of sand above the seam of clay up hill from me to make an under ground dam and steer groundwater around the house. With the concrete on three sides of the house that would give me a big buffer of dryness around the bunker since a good emergency shelter should be able to sit empty without being maintained but still ready to jump into if a big hurricane gets close. I don't want to need sump pumps to keep this area dry and the clay will make a seal uphill of me for extra protection plus give me a good place to dispose of the clay. It's much finer than sand so it will fill in the voids between the grains and essentially disappear if I pump it in about 20 feet beyond the bunker perimeter and I don't want to spread clay around the back yard. If I have to I'll dig a pit to fill with clay and then cover it with a few feet of sand but the backyard is meant to have grass and clay will just make a mess on the surface.

I already had decided to go with just one story so I could have tall ceilings because the gravel pit and drain I put in the bottom of the shaft through the clay so it would drain naturally if it ever got flooded seems to have risen about five feet and so instead of being four feet below the floor at the bottom of the shaft it's coming up the pipe about 18 inches above the floor. I changed around the pipes for a more permanent and functional system and raised them all a few feet so I can watch this over the long term and I'll make the floor of the main bunker a foot higher than the highest it ever goes up the pipe and make a basin to hold about 500 gallons of water that I can have a sump pump in for small leaks and if it rises above the elevated drain it will just go into the ground. It might not go down as fast as it's going in if I had some major catastrophe and the reactor blew a coolant line but over time if I had a pipe break or something and it ran for a week before I noticed I imagine computers ad TVs and stuff would be safe since I'm going to make a point of having anything electrical a few feet above the floor including all the outlets.

It would really be a big big stretch to actually get a permit to build the big bunker I'd need an actual engineer to stamp everything and I imagine insurance would be just about impossible to get since I'm not licensed for anything although I'm sure that would be trivial for someplace big like
Discovery...
but I did stop by the building department to see if I could build a small one since we have an ordinance saying anything not living area and under four hundred square feet you don't need a permit this part of Florida being rural and to need a permit for a dog house or tool shed.
FEMA
says the best place is under a section of garage floor that a car wouldn't ever be parked and gee just by chance there is such a spot almost like I planned it that way but this is a big leap from a dog house or tool shed so they need to ponder this a bit. It's not that getting a permit itself is a problem since I can act as my own contractor but then I'd probably need engineered drawings and I just don't have the funds I really need to figure out some way to earn some money...

I'm wondering since FEMA has a small amount on constructing such things in the most general manner if that might be in my favor to print out the
PDF
but I haven't actually read it for some time so it might only be general suggestions without any actual specifications like how thick a wall needs to be and how to space the rebar. My thought was to cut a hole through the bottom garage floor and dig it out and form it then get a pumper and fill the hole back up with concrete so I wouldn't ever be actually digging any tunnels that might fall on my head and this all would actually be pretty simple to do and even a two hundred square foot room would be a comfort if a tornado sneaks up.

Of course a real bunker with fake windows and flat screens behind them so you could stream views depending on your current attitude for latitude or make day into night and the reverse would be a lot more fun to build...

Anyways I'll still need to move a lot more sand and was a bit irked at myself for the trouble I was having priming the thing and so I've pondered all the adds and ends and thought about a gigantic check valve so I could prime it just by turning a valve and then I practically trip over a weight for a tool that they used to use to collect sap from long leaf pines and notice it is the perfect shape and size for a heavy duty check valve and not likely to disintegrate anytime soon from being in a slurry stream and as all things Mike I had it in my head and then picked up a couple odds and ends like a stainless steel bolt and some more pipe glue and two couplers and made a fourteen foot primable check valve.

It might actually work!



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