Roof Structure of storage tank

[walha76]

Hi,
I have to built a new storage tank D:44m, H:19m, fixed conic roof with floating screen according to API 650.
What is the adequate structure of the roof.
Could be in steel profile ? or shall be with colomns?
I have doubt with the designer because he propose me a roof structure in steel Profile IPE 270 without any columns.
I will be gratefull if you could advice me acording to your experience.
Many thanks?

 

[JStephen]

Typical roof structure for a tank of those dimensions would use a center column and one or maybe two rows of outer columns. A large self-supporting roof will be more expensive, and would not normally be used without some specific reason.

 

[walha76]

Thank you Mr J.Stephen
How I can convince the designer? I need calculation note or technical document
I am looking for Web site or specialized company which can give me service about this subject?
Thank You!

 

[JedClampett]

Temcor (

http://www.temcor.com/)

or Conservatek (

http://www.conservatek.com/companyoverview.htm)

will be glad to whip you up an Aluminum free standing dome structure. As far as steel, I'm not sure I've seen anyone who manufactures them.

 

[JStephen]

Contact some tank companies that are active in your area and ask what styles are available and the comparative cost.