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Thanks for the reply, that makes me feel a little better. Not sure about any footers I thought it was just a monolithic slab but I am not familiar with the codes in Kentucky. I would guess that the bottom of the excavation for the pool is below any footer or the slab, the soil in kentucky is...

Meant excavation.http://files.engineering.com/getfile.aspx?folder=11d84a15-ae12-4d18-92bd-6339e7f7f978&file=0425130805.jpg

I had an above ground pool set up and the excavators dug out about 3 feet of earth about 3.5 feet from the corner of my garage. I am concerned it was dug too close to the slab of the garage which is part of the house. I will be backfilling to the pool but wanted to get opinions on whether...

Steel pipe is not something we have in stock or access to, so I am not familiar with the cost. why don't you enlighten me to the cost of a 6ft section of 24" diameter pipe.

A steel pipe might work, but I am trying to keep the cost down.

If you could let me know the result from your copy that would be a big help, just so I know. I will look into the 24" std wt pipe too. You wouldn't happen to have a general idea of price for the pipe would you, maybe a link? Thanks for the help

I was planning on having the box welded together, so it would appear like a large steel rectangle tube. Then weld a plate over one end and leave the other open so I could access the inside. I am not familiar with Roark's table.

Hello all, I originally was thinking of making this from plywood but 4psi is too much for plywood. I have access to 4x8 sheets of steel 1/4 and 3/8". I would like to know which one I can get away with using for a 20"h x 13"w x 66"d box. There will be a 4psi difference inside the box vs. the...

Thanks for all the replies. What would be the minimum thickness of steel plate I could get away with?

Thanks. From my research I didn't think it would work, but I thought I would get a second opinion.

Hello, I would like to know if I build a 2'2'96" box out of 1" plywood sheathing (think diy altitude test chamber) would it be able to withstand a 4psi differential. I am looking at testing products at no greater than a simulated 9000 ft. Thanks