Hi,I would like to ask something about the solution module output data. In what units are the Nh, Ni , Nc at the Hoop stress determination?Thanks in advance

Should be lb/in. Everything in that "solution file" is in (internal) Imperial units.

Thank you.Now I would like to ask does tank 3.1 incorporates the calculation formulas for dynamic liquid hoop forces Ni, Nc, Nh (E.6.1.4) according to 11th edition or Addendum 1 of 11th edition.If not when should we expect a new version of tank because the formulas are quite different.

TANK 3.10 includes the 11th Edition. Version 3.20 will address Addendum 1. I'm working on that now, but I'm still making changes to the source code, no testing/QA has been performed. This version is at least 3 months away.