Rectangular Open Top Tank 2

[RoeRu]

thread404-11986
Hi, I'm new to this site and I happen to stumble upon this thread while googling for a design of a water storage tank. The tank is not under pressure, and is open on top. The dimensions are L33'X W13' X H6'. I am trying to find how many external stiffeners both horizontal and vertical I need to support the pressure. I'm thinking of a 2"x2" 10ga formed c-channel as stiffeners. Any help is much appreciated. Thanks.

 

[rb1957]

google "moody rectangular panels" ... seriously ! this should get you to the original reference used in Roark, written by Moody and should help you out.

Quando Omni Flunkus Moritati

 

[RoeRu]

Thank you very much. This should help me a lot in understanding the loads and the design process as well.

 

[racookpe1978]

Why would you want to use a 2x2 C channel for an external rib? Why are rejjecting angle iron or plain flat bar?

No matter how you attach a CH 2x2 to the wall, it is a very inefficient use of steel!

Why both horizontal AND vertical stiffeners? You're making what should be just a plain inexpensive box very, very difficult (can you spell expensive and time-consuming?) to weld up and fit all of the nested channels if you demand both horizontal and vertical ribs.

Do you have a walkway or platform around the top?

 

[RoeRu]

We were making small tanks for our customer and we were using this type of stiffener. My boss asks me if I can use these same stiffener and I told them it might be too small. That is why I came to this forum to get some idea to support my judgement.

We don't have a walkway directly on top on the tank, just on the side and is level with the top of the tank.