Controls options for reviewing intersection SIFs for the IGE/TD/12 code.
After finishing your review and closing the dialog, you have the option of transferring
values to the appropriate properties on the Classic Piping Input Dialog Box.
Node
Displays the Node number where the stress intensification exists.
Type
Specifies the type of tee or joint.
Select one of eleven types of tees and joints. For specialized diagrams of tee type with this code, see Properties Used for SIF Calculations with Other Metallic Piping Codes and IGE\TD\12 Reference.
Meets D1, Notes 10 a, c, d, e, f (for B31.1)
Indicates that the tee meets the dimensional criteria of B31.1 Figure D1 as well as Notes 10a, 10c, 10d, 10e, and 10f. This allows the software to use the branch equation when determining the SIF value for the tee. This option relies on setting the Reduced Intersection and No RFT/WLT in Reduced Fitting SIFs options on the Configuration Editor.
Use Notes 6, 9, 10 (for B31.8)
Indicates that the software should use B31.8 Notes 6, 9, or 10, as applicable, when determining the SIF value for the tee.
Meets 3673.2b-2, Notes 10, 11 (for ASME Section III Class 2 (ASME NC) and ASME Section III Class 3 (ASME ND))
Indicates that the tee meets the dimensional criteria of ASME NC/ND, Figure 3673.2(b)-2 and Notes 10 and 11. This allows the software to use the branch equation when determining the SIF value for the tee. This option relies on setting the Reduced Intersection and No RFT/WLT in Reduced Fitting SIFs options on the Configuration Editor.
Ferritic Material for Note 3673.2b-1.3 (for ASME Section III Class 2 (ASME NC) and ASME Section III Class 3 (ASME ND))
Indicates that the material for the ASME NC/ND tee is ferrous, which allows the software to compute the Y value based on the highest specified temperature value.
Pad Thk
Specifies tp, the thickness of the reinforcing pad for reinforced fabricated or full encirclement tees. The pad thickness is only valid for these intersection types. If the thickness is left blank or the value entered is zero, the software uses the SIFs for an unreinforced fabricated tee.
In most piping codes, including B31J, the beneficial effect of the pad thickness is limited to 1.5 times the nominal thickness of the header. For B31J, this property applies to reinforced tees. See Type or Intersection Types.
EN13480 limits the reinforcing pad thickness to the nominal thickness of the header.
The Swedish piping code uses a value of 2.5.
This factor does not apply in BS 806 or Z184.
Ftg Ro
Specifies the fitting outside radius for branch connections. This option is used for reduced branch connections in the ASME piping codes, Bonney Forge Insert Weldolets, and for WRC 329 intersection SIF calculations. Configuration options exist to invoke the WRC 329 calculations and to limit the application of the reduced branch connection rules to unreinforced fabricated tees, sweepolets, weldolets, and extruded welding tees.
For B31J, this property applies to weldolets. See Type or Intersection Types.
Default Values
-
When no value is defined, the software uses the outside radius of the branch pipe.
When no value is defined for B31J, the software uses a predefined default. See Limits and Conditions in B31J Methods.
Crotch R
Specifies rx, the crotch radius of the formed lip on an extruded welding tee. This is also the intersection weld crotch radius for WRC329 calculations. Specifying this value can result in a 50% reduction in the stress intensification at the WRC 329 intersection. If you attempt to reduce the stress riser at a fabricated intersection by guaranteeing that there is a smooth transition radius from the header to the branch pipe, then you may reduce the resulting stress intensification by a factor of 2.0.
For B31J, this property applies to welding tees, extruded tees, and sweepolets. See Type or Intersection Types.
Default Values
-
When no value is defined, the software uses zero.
-
When no value is defined for an extruded tee with B31J, the software uses 0.05*(outside diameter of the branch pipe)
When welding tee and welded-in contour insert tee (sweepolet) geometries meet the
B31J dimensional requirements of a smooth crotch radius and an increased crotch thickness, flexibility factors and SIFs can be reduced. See Reduction of SIFs and Flexibility Factors in B31J Methods.
Weld ID
Specifies the weld identifier value. Select 0 - As Welded or 1 - Finished/Ground Flush.
If you specify a value of 1 - Finished/Ground Flush, then the software considers the weld to be ground flush on the inside and out and it calculates the SIF as 1.0.
For more information on how input parameters are used to compute SIFs for girth butt welds, see Mismatch - Average / Weld (d).
This property only applies to:
-
Bonney Forge Sweepolets
-
Bonney Forge Insert Weldolets
-
Butt Welds in the Swedish Piping Codes
-
IGE/TD/12
-
Butt Welds in the IGE/TD/12 code
Weld (d)
Specifies davg, the average circumferential weld mismatch measured at the inside diameter of the pipe. This value is used for butt welds and tapered transitions. When no value is defined, the software uses zero.
For B31J, this property applies to butt weld joints and tapered transitions. See Type.
This property does not display for FRP piping codes.
Fillet
Specifies the fillet leg length. This option is used only in conjunction with a socket weld component. The value is the length of the shorter leg for an unequal leg fillet weld. If a fillet leg is given, both socket weld types result in the same SIF. See Appendix D of the B31 piping codes for further clarification. When no value is defined, the software uses zero.
Header OD
Specifies the actual outside diameter of the header matching pipe.
Header Thk
Specifies the actual wall thickness of the header matching pipe.
Branch OD
Specifies the actual outside diameter of the matching pipe.
Branch Thk
Specifies the actual wall thickness of the matching pipe.
Header SIF (i)
Displays the calculated in-plane header stress intensification factor.
Header SIF (o)
Displays the calculated out-of-plane header stress intensification factor.
Branch SIF (i)
Displays the calculated in-plane branch stress intensification factor.
Branch SIF (o)
Displays the calculated out-of-plane branch stress intensification factor.
Flexibility Characteristic
Displays the flexibility characteristics that are calculated from tee properties such as run diameter and wall thickness.
Branch Section Modulus
Displays the branch section modulus.
Recalculate
Recalculates and displays SIFs, flexibilities, stiffnesses, and other related results after you change the input data. If you change the input data, CAESAR II allows you to transfer the data back to the model.