Q. How to model a Flanged Cross component using Back to Back Tee components in AutoPIPE?

	Applies To
	Product(s):	AutoPIPE
	Version(s):	ALL
	Area:	Modeling
	Original Author:	Bentley Technical Support Group
	Date Logged & Current Version	Jan 2019 12.00.00.14

Problem:

How to model a flanged cross pipe fitting with center of cross to face of flange measurement = 1 foot using Back to Back tee?

Solution:

There are 2 methods of creating a Cross piping component in AutoPIPE

1. Model using Cross component

2. Model using back to back Tee components

Use procedure below to model with back to back Tee components, or click here for instructions to model with a single Cross component

A. Select a node point in the model

B. Use Insert Tee command

Length = 1 ft

Type of tee = Other

SIF in / out = enter value (ex. 1.0)

Note: The user must enter a custom SIF values as the default values are wrong. Most piping codes (i.e. ASME B31.1, B31.3, etc..) do not have SIF calculations for cross fittings. Only available options are: A. hand calculate the SIF value using other reference materials B. contact the manufacture to have them supply an SIF value, or C. analyze with an FEA application to provide the calculated value based on the cross's geometry.

Press OK to continue

C. Select the branching blue arrow, (notice the segment changed from A to *B*)

D Use insert Run command to enter branch piping, distance = 1 ft

Press OK to continue

E. Select Run arrow, notice that the segment changed from B back to A

F. Use Insert Tee command

Length = enter a small value (ex. 0.01)

Type of tee = Other

SIF in / out = enter value (ex. 1.0), again enter user SIF values as mentioned above.

Press OK to continue

G. Select the branching blue arrow, (notice the segment changed from A to *C*)

Note: selecting the branch arrow is easy, by confirming current node point is A03, and then press the UP arrow on the keyboard

H. Use insert Run command to enter branch piping, distance = 1 ft

Press OK to continue

I. Select Run Arrow from node point A03.

Note, selecting the arrow is easy using the keyboard arrows Up / Down switches between connected segments at a node point, Left / Right arrow moves up and down the segment respecively.