Fully supported flanged tank bottom according to EN 14015

[dim_angel]

Hello everyone,
This is my first time designing a tall vessel and have the following question. Is there provision in EN 14015 code for a flanged flat bottom, fully seated on a concrete foundation? Thank you in advance.

 

[HTURKAK]

The scope of EN 14015 is for vertical, cylindrical, flat bottomed, above ground, welded steel tanks . The foundation could be
pad type, Concrete ring type , Concrete surface mat .

Is your question for an anchored tank ?A sketch would help to get your point.

 

[dim_angel]

Hello and thank you for your reply,

My question regards whether or not a flat bottom with flanged ends, instead of a "typical" flat bottom, is acceptable according to the EN-14015 standard, and under what conditions. For example, as far as I know, flanged bottoms are acceptable in API 650. Here is a sketch of a section with the design I have in mind, if that helps.

 

[Geoff13]

In API 650 a flanged bottom in only permitted on an Annex J shop assembled tank. However your tank is quite small so shop assembly might be possible.

Assuming EN 14015 is similar to API 650, you could check your copy to see if there's something similar to Annex J.

 

[LittleInch]

That drawing is very small to read and a zoom on on the bottom connection would be good.

What sort of connection are you making from the flanged bottom floor plate to the walls?

Bolting or welding? A close up detail of that joint would be good to see and understand.

not quite sure why you want to design such a tank when any number of vendors will just make one for you.

 

[HTURKAK]

The tank sketch in your post ,does not comply with EN 14015 requirements and can be assumed non- standard tank . The bottom detail in EN 14015 as shown below and API 650 has similar details . The bottom plate thk min. 6.0 mm defined. Regarding chair supports , you can look Annex M Tank anchorages.

If you are looking for the design of this tank , my suggestion would be a hybrid approach ( EN 1993-4-1 flat bottom ground supported silo ) and , ( EN 14015 )

 

[JStephen]

Normally, a shovel-bottom (sloped to one side) would not be a flanged bottom.
From the original question, I was thinking flanged as in having bolt holes like a pipe flange, not a flange like an F&D head.
The outlet illustrated does not meet API-650, but has been done a fair bit.

 

[LittleInch]

Do it cone down and stick the pipe on the middle.