New tank?? 280ish

Here's another response from beaslbob:

Here is my extremely not to be trusted just in the ball park analysis of 8 balls' bolts.

assumptions all weight will be on 5 7/8" diameter steel bolts.

Totall force is 3500 pounds.

Further beaslbob assumption. that would be 2 rows one with 3 bolts one with two.

Further even more ridiculous assumption. each of the bolts in each row equally take that row's force.

therefore the row with 2 bolts has 3500/2=1750 pounds and the row with 2 bolts had 1750/2=850 pounds

no one ever ever bumps against the tank and stand.

Steel has various ultimate strength and bolts can be heat treated up to 170,000+ pounds per square inch.

But on reviewing the various steels I found that the compressive yield strength and shear stress remains at around 35,000 pounds per square inch. So I use that just to be save. Besides these bolts are in compression not tension.

Each bolt has 3.141596*7/8*7/8/4=.601 square inches area.

With 850 pounds per bolt we have 850/.601=1455 pounds per square inch for each bolt.

Each bolt can take 35,000 psi so each bolt is over 23 times stronger then the load.

Obviously that is no problem. Even if all the load was on one bold, the bolt would not yield ("take a set").

If the stand was "threaded" the threads would be about 7/8" in diameter for a circumference 2.75 inches through the 1/8 stand thickness. Additionally assume extremely loose fitting threads where only 1/3 of the thread are actually in contact. So instead of the 1/8" you only have .0414" in the bolt and stand leg transferring the load. 2.75*.0417 is the shear area which is .1145 square inches to shear out the 850 pound force for a stress of 7640 psi. with an allowable of 35,000 psi the stand thread hole is 3.58 times times as strong as needed.

that 3.58 makes me a little nervous for something that will remain standing for very long periods of time. Additionally this analysis assumes there is no side force on the bolts and that really makes me nervous. Welding a nut would reduce the thread stress but then the welds would have to by analyzed. but hopefully the over all effect is a much stronger structure.

I think you are correct to use shims and nuts to prevent side forces and to have more area to transfer the loads from the bolts to the stand.

also I am not a concrete person but a 1' circle on the concrete has .7854 square inches for 1114 psi. If concrete does have 3500 psi strength that means to the concrete is around 3 time stronger then it has to be. But that makes me nervous because of the long term time frame. So perhaps you could use something to spread out the are a little most or the concrete may develops a set.

whatever you do I presume you are going to make adjustments so that the bolds are a "short" as possible and before the water is added. Adjusting with the full weight would not be a good idea if you could avoid it.

but I'm just rambling right along.

All of which is worth at most .02

Bob
 
Lol thanks Bob/Tomoko, The bolts aren't threaded into 1/8 Steel though. The nuts for the bolts are welded into the steel. My guess is the nuts are about 5/8" long So that should increase the 3.58 a good bit right?

As for the pressure on the slab. 3x stronger isn't bad, But I probably will still add a couple of shims between the frame and the slab to help spread the load some. A couple of blocks cut from treated lumber should do the trick. Either that or I could add more bolts to the bottom of the stand.. But If I drilled and tapped them. The added bolts would only be held by the 1/8" steel and would only probably be 1/2 or. I'd have to check what taps I had.
 
You know where this is leading to, Will, don't you?

You need to host our meeting as soon as you get some water in that new tank :D You know we can't hold our breath so long.

I am sure everyone agrees with me.

Tomoko
 
Thanks! I hope it turns out good.

Haha Tomoko, I don't think the new tank will be much to look at when I first set it up. But of course we can host the club once I get it all done.

I got my stand primed and painted after a couple hours with a wire brush and sander lol. I used some primer that is suppose to be super tough and stops and prevents rust. Then I painted it with 2 part epoxy paint. This stuff is very thick and seems pretty hard once it dries.
I also got the canopy built tonight! I have one small piece of trim to add in the very middle , but besides that its all built. Im going to wait till I get the stand built before I stain it and clear coat it.. here is a few pictures
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332024649.jpg

332024649.jpg
 
Sorry for so many pictures. Everyone always asked for pictures of the parts going together and I never took any when I did the 190. I figured since I had to rebuild the canopy and stand I would try to take some pictures of the steps!

Will
 
<a href=showthread.php?s=&postid=13236774#post13236774 target=_blank>Originally posted</a> by 8BALL_99
Sorry for so many pictures. Everyone always asked for pictures of the parts going together and I never took any when I did the 190. I figured since I had to rebuild the canopy and stand I would try to take some pictures of the steps!
Will
You shouldn't be sorry for so many pictures. In fact, you should take a step further and make videos and post them on YouTube. I'll even narrate in my best Bob Villa voice if you want. :D
Mariner
 
Thanks!, lol Mariner not sure about that one. I think the only craftsman tool I own is a screwdriver.

I just got off the phone with Miracles confirming my Shipping address, My tank was crated up yesterday and should ship tomorrow or Friday! They are just waiting for customs to return some form. So I guess the 190 is fixing to get drained this weekend.. Man thats going to be a lot of work haha.
 
Well the 190 is empty. Got all the stuff moved to the temp tanks.. Man that was a lot of work.. Just thought Id share. Im not posting what the equipment room looks like cause man its a mess!

Went from this
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To this
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Will
 
I sympathize with you! It's never fun tearing down a big tank that's been running since forever!
 
Yeah It was a little sad once it was empty. Even my wife walked in and said how weird it was for the tank to be empty. Next step will be to get this beast moved to the garage! Going to try and do that tomorrow if I can get enough hands. This one is heavy, the 300 is going weigh a ton.:eek2:

Will
 
You have a hole in your WALL! Can't wait to see the new tank. Hurry and get it up so we can all come visit. lol

Monica
 
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