Water Basin Design

Can you tell us how much 960 gallons of water weighs? Just for grins, let's assume STP.

no need

It would be much easier to build a round tank than a rectangular one. If you build a rectangular tank you will have either make the walls quite thick or provide substantial lateral bracing to keep the walls straight.

Unless there is some driving force to make the tank rectangular I would suggest round. A 6' 5" diameter tank 4' high would give you 960 gallons and using the formula from API 650 a wall thickness of 0.005" would be sufficient to withstand the hydrostatic pressure in the tank but I would suggest something a little thicker for structural rigidity...say 3/16" minimum.

How are you going to join the plates together? Welding? Riveting?

i think .005" is too thin..

According to the formula from API 650 "Welded Steel Tanks for Oil Storage" for the thickness of a tank shell and using a yield of 10 KSI for aluminum you get a thickness of 0.005" which is WAY too thin for any practical application since attaching nozzles or even joining the sheet would be quite difficult.

The 0.005" is the theoretical minimum thickness for the shell, not the practical thickness.

has to be rect

If is 8' dia x 4' high with 14ga sheet and EPDM liner no supporting frame required when sheet is appropriately overlapped and secured with a double row bolts or rivets top to bottom.

google - glue tile to aluminium sheet

was thinking that

WHY Aluminum storing H2O2 instead of water?

Probably OP is building his mini swimming pool in a costal area

i can weld it my self, plus its free

May be you should hire a licensed engineer and get this project designed properly, because I am sure there are many more components to be addressed than you have presented to this point.

engineers costs are over rated, why spend the money when I can get the information here form just as qualified people

OK,

Assuming 8' long 4' wide 4' tall?

32 sq ft per side

16 sq ft per end

= 96 sq ft surface area

=13,824 sq in.

Wt. of water (fresh, at sea level) 8.34 lbs per gal.

960 gallons = 7910 lbs.

resulting in .572 psi

The sheeting could be VERY thin from a rupture standpoint!

But you would need extensive bracing to keep it from bowing outward.

I would go with a round tank as others have suggested.

Better yet, buy a prefab that it rated for your use. Does it have to be aluminum?

If you insist on DIY, with dimensions as suggest in your question, I would go with 1/4 in. plate welded at all seams and corners with corner gussets and 3, half inch, cross bars (evenly spaced) on top. It will cost a small fortune to build!

ya was think quarter inch plate with quarter by quarter tube frame and middle section

Does it have to be aluminium? You would be better off with a plastic tank which you can get in any sizes you want and they are much, much cheaper and you can adhere your tile to the porous shell on the plastic tank.

Also I don't know how clean you want to keep your water, but we have aluminum tanks for water storage on our fleet trucks for remote tower work and they are not as easy to keep clean as the plastic tanks we have.

Check out this LINK.

cost for a custom plastic tank, blows my budget. i get the aluminium for free