Hi, Dear Friends,
I have a question regarding stress calc in CONSPAN.
First, please see the following pic.
I am trying to verify the calc results with a spreadsheet. Please see following pic.
I was able to get the stress results due to DL and LL correctly. However, I cannot get the stress due to prestress force somehow.
top 1.00 v.s. 0.956
bot -4.52 v.s. -4.309
The prestress loss is as following.
Since I am using "transformed section properties", I ignore elastic loss and gain. I calculate my Pe as 1401.755 =1581.9-23.06*7.812 (as in the spreadsheet).
Please help me finding my error. Big THX.