ASSISTANCE TO RESOLVE ISSUES ON RECTANGULAR VESSEL USING PVELITE

[maxi e]

Dear Engineers,

Please I need your help on how to resolve issues I am having with the output of a rectangular vessel (Water Setteling Tank) using Pvelite. The design parameters are as follows

length = 3030mm, width = 2760mm, height = 1790, design pressure = 1.246 bara, design temperature, 80 degree C, service is water.

I used pvelite codecal rectangular vessel to design it, also, I used vessel type A4 and selected a section for my reinforcement, and used equal angle iron of 150 x 150
Please I am having an issue with resolving the BENDING STRESS SUMMARY AND TOTAL STRESS SUMMARY, and I would appreciate any solution on how to resolve these challenges from anyone.

attached is an image snap and PDF file of the input and the output report.

regards,
Maximillian Ebuka.

 

[Jay_]

First of all, Bara is absolut which means that your actual internal design pressure is 0.246 barg, which is bar gauge, the pressure that you would see on a pressure gauge. Unless you mean it gauge, so please make up your mind.
Second of all care to explain why the external pressure is around 10 barg?
A 1.25 barg design pressure for a rectangular tank this big is very high. I wouldn't worry about this result, that is not entirely an error, just use thinner plates and much bigger reinforcements, say UPN 300 as a first iteration.
Plus Stainless steel profiles?? are you kidding...
This is gonna cost alot.......
If i were you i would propaply think about a vertical cylindrical vessel with 2 torisph or 2 ellip ends.
Regards,

Detailing is a hobby,