Roof thikness calculation

Hello,

I have a problem in output of tank software. Normally if i change the roof angle the roof plate thickness change automatically but isn't the case. And if i change the live load also, the thickness can't be change.
Note that type of roof is self cone roof
can someone explain me this problem?

API defines both maximum and minimum limits on the roof plate thickness. We can't answer this question without seeing your data.

Open a Support Request in eCustomer and include your TANK input file (.tki) as well as the configuration file (tank.cfg) from your data directory.

I can not help it. But I hope that you will deal with those issues.

Hello,
I would like to know what's formula used by TANK software to calculate roof plate thickness for rafter supported cone roof?
thank you for advance