FLAT BOTTOM IN ASME TANK
FLAT BOTTOM IN ASME TANK
(OP)
Hello, I have to design a storage tank using the ASME code with pressure=30psi , diam=6.3 meter and the bottom have to be flat supported on the ground.
Using the formula for flat covers in the ASME, the thickness is 3.75".
Is this thick usual for tanks of this dimensions or is too much?
What recommendations can you give me for the design of the flat floor for a Tank with these features?
Using the formula for flat covers in the ASME, the thickness is 3.75".
Is this thick usual for tanks of this dimensions or is too much?
What recommendations can you give me for the design of the flat floor for a Tank with these features?





RE: FLAT BOTTOM IN ASME TANK
You need to rethink you tank configuration.
RE: FLAT BOTTOM IN ASME TANK
This type of construction is covered by API-620 up to 15 psi pressure. Note that at higher pressures, the anchorage and foundation details can become unreasonable as well.
RE: FLAT BOTTOM IN ASME TANK
Thanks JStephen, then in this case Could I design the foundation to support stresses by the pressure and thus I reduce the thickness of the flat bottom? or What other advice would you give me ?
RE: FLAT BOTTOM IN ASME TANK
RE: FLAT BOTTOM IN ASME TANK
The thickness of the bottom head will be less because the dished shape is stronger. The design of the tank foundation is independent of the tank design. A tank of this type will have an octagon foundation, maybe 2-3' thick.
The proposed flanged head diameter is close to the largest diameter that is normally manufactured. It will be difficult to ship.
RE: FLAT BOTTOM IN ASME TANK
I am going to check if I can change the configuration to a Dished shape head with skirt support.
Another question about this tank using the ASME VIII code:
Do you know a way of design a conical head with the half of the apex angle greater than 30 ° without the use of a toriconical head ? Or Any advice for this situation
Thanks in advance
RE: FLAT BOTTOM IN ASME TANK
RE: FLAT BOTTOM IN ASME TANK