Hi all, first of all I congratulate you for this great forum and secondly I want to make an inquiry:

I am designing an atmospheric tank 500 m3, I am doing hand calculations and support with COADE TANK 3.1 program, however, I am somewhat stuck with the differences between API 650 2007 and API 650 1998 for the calculation of roof , so too, apparently TANK 3.1 does not use the latest version of API ie 2007; Now, hopefully someone could clear my doubt of the program and perhaps too much to ask, but if someone could give me some calculations to be used for conical roofs self-supporting sample, I will appreciate it infinitely.

Regards