Posted by: bhagwatp
Lift Off Case - 07/01/11 10:22 AM
I have a confusion about lift off case.
I use App. P of B31.3 in CII which takes care of operating stresses. So is it needed to check Lift off case when CII checks for operating stresses?
Posted by: Richard Ay
Re: Lift Off Case - 07/02/11 08:22 AM
The Sustained and Expansion cases must still pass.
Posted by: bhagwatp
Re: Lift Off Case - 07/09/11 04:23 AM
That's right.
My query is,
If we don't use APP. P of B31.3 in CII, It doesn't check OPE stresses. IN this case Suppose a Support gets lifted, we will check for LIFT OFF case by removing that support and check for stesses.
But IF We use APP. P in CII, it checkes OPE stresses.
So do we check lift off case again by removing that support and check stresses?
In both cases, I agree that all stresses(SUS,EXP,OCC) should be within alloawable.
Posted by: Richard Ay
Re: Lift Off Case - 07/09/11 01:16 PM
Read the section in the Technical Reference Guide (Chapter 6) on the "Hot Sustained" case.