Hello everyone
I am handeling a project in dimentionning an offshore pipeline according to the DNV norm
So according to the DNV OS F101 we do have three different equations:
* Sd : design effective axial loads (it's a combination of the accidental loads, the functionnal loads and the...
Thank you ST95,
You're talking about the guidance note that gave us the fiugere 5-1 right?
but that figure only gave us the derating factor for yield stress (fy,temp ) and not the derating factor for tensile stress (fu,temp)
I mean should I look some where for a similar information ? is that...
Hello every body, I wonder why the DNV gave us only informations about the derating value for yield stress fy,temp (Fig 5.1) and not for tnsile stress fu,temp knowing that we have to use both of them. Is there any way to determine fu,temp according to DNV ?
Thank you guys :)
Hello every body,
can any one please help me to understand the equation 3.35 from the DNV RP F 109
What I didn't really understood is these two parameters:
Lstab5 and Ly
actually we use should use this equation to determine the lateral dispacement Y then all the other parameters should be...
That's right, but some data in the 2007 version are not clear and I think I will need to go back to the 1988 version :/
then the new version does not totally replace the ancien one
Hello, I've been trying to handle a project in which I should determine the wall thickness of an offshore pipeline.
I've done this study according to ASME 31.4
In this norm after calculating the wall thickness we should verify three criterias: hoop stress criteron, longitidunal stress criteron...
Hello,
Can anybody help me understand the symbols in the equations from the generalized lateral stability method of DNV RP F 109?
Actually not all of them exist in the section symbols of this revision practice, and here is the list of the symbols that I need to understand:
* Hs in the equation...
Hello you guys, I would like to know what are the differences between the two recommanded practices of DNV : DNV RP E305 and DNV RP F109.
In fact they both have the same name " on-bottom stability design of submarine pipelines" and I remarqued that DNV RP F109 is an update of the DNV RP E305...
