Flat heads.

mageslay · **Joined:** Tue Dec 02, 2008 9:43 pm **Posts:** 42

Hi all !
Tell me please
In UG-34 (c) (2) there is a formula - (2). In this case where to take meaning of parameter >
E - joint efficiency?
:?:

akonrad · **Posted:** Tue Dec 23, 2008 2:37 pm

mageslay,
Go back several lines to UG-34(b), where E is defined.

mageslay · **Joined:** Tue Dec 02, 2008 9:43 pm **Posts:** 42

akonrad

There conversation is conducted about welded details.
In my case are fixed by bolts. As shown in Fig. UG - 34 (j) and (k)
How to be in this case if conversation not about welding?

dr.chris · **Posted:** Wed Dec 24, 2008 1:39 am

E = 1 if there is no weld joint on the flat head

mageslay · **Joined:** Tue Dec 02, 2008 9:43 pm **Posts:** 42

dr.chris

Tell please subitem UG where it is written?

sanjeev_shukla70 · **Joined:** Wed Apr 18, 2007 2:05 pm **Posts:** 260

Code:

UW 12 (d)- Seamless vessel sections or heads shall be considered equivalent to welded parts of the same geometry in which all Category A welds are Type No.1. For calculations involving circumferential stress in seamless vessel sections or for thickness of seamless heads,E = 1.0

Regards

mageslay · **Joined:** Tue Dec 02, 2008 9:43 pm **Posts:** 42

By all thank :!:

srinivasan · **Joined:** Tue Jan 27, 2009 6:33 am **Posts:** 79

It is important to understand that weld joint efficiency refers to welded head (like a crown and petal); if the head is a single piece, E=1 is to be used

Flat heads.

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