Applies To
	Product(s):	AutoPIPE
	Version(s):	ALL
	Area:	Modeling
	Original Author:	Bentley Technical Support Group
	Date Logged & Current Version	Jan 2019 12.01.00.10

Problem:

How to model a modified Y-pipe fitting?

Solution:

Using the Same techniques to create a Nozzle on a Vessel, create the modified Y-pipe fitting

1. Starting from some point on the main vertical piping, insert a run in the vertical direction to a short distance away from the end of the Modified Y connection (ex. A00 to A01 = 1 ft)

2. Continue the vertical piping as need to the starting point of the Modified Y component. (ex. A01 to A02 = 8 inches)

3. Insert a new pipe property that has the same Outside Dia. of the Modified Y component (ex. Y-fit, Material = same as main header)

4. Insert run piping to represents the same thickness as the Modified Y component (ex. A02 to A03 = 4 inches)   

5. Insert weight of Modified Y component

6. Keeping with the same techniques used to mount a nozzle on Vessel, insert internal piping to rigidly mount branch piping on surface of the Modified Y component. 

a. Make the previous point on the main header the active node point. (ex. A01), and Modify / Convert point to Tee.

b. Double select the node point (ex. A01), a tee dialog will now appear. make the following changes:

- Change Tee Component from Tee to Cross,

- Set Type of Tee from Welding to Other

- Enter SIF - IN / OUT = 1.00

c. Select one of the cross's branch arrows heads to make it the active node point, confirm that current segment has changed from previous designation to a new values (ex. Seg A is no Seg B).

d. Insert internal run piping to surface of Modified Y component (ex. B01  Dz = 8 inches, Dy = -12 inches, set Pipe data Identifier = Internal) Press OK, 

e. When the pipe properties dialog appears, update settings to represent internal piping (ex. PipeID = Internal, OD = user to define, SG = 0.00, Material = same as main header)

7. Insert Branch piping with new PipeID as needed (ex. B01 to B02), Insert new pipe property to represent smaller piping out of the Modified Y component (ex. PipeID = Branch)

Done with Branch #1, now go back and insert Branch #2. 

8.  Go back to Cross and select 2nd branch arrow, again notice that the segment has been changed to a new value (ex. Seg B to Seg C)

a.  Insert run piping to surface of Modified Y component using the correct PipeID (ex. C01  Dz = -8 inches, Dy = -12 inches, set Pipe data Identifier = Internal) 

9. Insert Branch piping as needed using the correct PipeID. (ex. B01 to B02, Dy = -2 feet, Pipe data identifier = Branch)

Done with Branch #2, now in the home stretch a few more steps. 

10. Select all the Internal Piping and piping representing the Modified Y component (can be done in one step using the Input grids Pipe Property Tab), these items should all be highlighted Red. Insert Rigid Options Over Range,

- Include weight = disabled

- Include Expansion = enabled

11. Last step, select all weld locations (ex. A02, B01, & C01),

- Insert Joint Type and User SIF, Joint End type = User-Defined

- SIF = (user to calculate and enter value),

- Override all other SIFs at this point = enabled 

Done...

See Also

Tee, Cross, or Branch Piping Components - Modeling Approaches

Bentley AutoPIPE