Dear moderator,

For Cross tee connection, how sif can be determined in CAESAR V.5

I have attached the warning message & a snapshot.

WARNING: There are 4 PIPES framing into the intersection at 30. Please check for accuracy. No stress intensification factors for this intersection can be calculated.

Regards,
Balaji

There was a good answer on this topic few months ago. Topic has been discussed many times. PLS use search function.

If you ask me cross T doesn't belong to a pipe where you need CAESAR II.

you will not get any type for cross in CAESAR II. Its not in even B31 codes. refer some FEA S/W for correct SIF calculation.

Hi Balaji,

http://www.coade.com/ubbthreads/ubbthrea...=true#Post13386
Please visit that post and it will answere your question...

Regards!

I do not think that using minute element to trick the program makes bad design to a good design. Its like hiding a corpse into a cupboard. Sooner or later it will start to smell.

Using the [Search] function you can find:

http://www.coade.com/ubbthreads/ubbthrea...h=true#Post4983

http://www.coade.com/ubbthreads/ubbthrea...h=true#Post4282

http://www.coade.com/ubbthreads/ubbthrea...h=true#Post2676

Hi Sir Jouko,

I think Sir Loren is not hiding any corpse? Sir Loren do you?

By the way, I think he address that solution for beginer that is in hurry situation to solve a problem... Like me i need time to understand SIF but for now i really want to make my things done. SIF understanding may come later but for now deadlines are coming... so i think it is a better solution for me.

I really thank Sir John Breen to post a link that explain SIF(which i have no time to read yet but only downloaded).

http://www.coade.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=11021&page=1#Post11021

Sir Jouko Thank you for advice, I myself will try to study hard to make safety in our clients and those people operate the plants...

Ps: Dont get mad... im just a new commer who know nothing compare to you...

Regards!

I know little. That is the main reason I follow this forum. I learn every day.

The warning is because of four elements converging in one spot... it is simply a warning because this is not a typical pipe construct. (Some will argue that it is) However I believe Joukos point is that in piping that is being analyzed the internal strains are usually large enough to be of some concern. In those cases the non-code cross intersection type is a significant weakening of the header when D/d ratios become large therefore on would not weaken something deliberately that is going to receive a lot of load.

John is correct.

I thought of proposing new improved design. I just need to figure SIF for it.

hello sir ,
sorry but wanna ask somethng ,, wat d procedure to attach files,,
actulay i want to attach a file,
please guide me

kunal

start with pressure design first you have no ligament space in some spots....

Then start your SIFS they will be big

Kunal,

To attach files, use the [Reply] link at the bottom of a post. This will give you the "full reply form". On this form, at the bottm is a link to attach files.