Specifies values that depend upon the code that you are using.
B31.1 / B31.3 / B31J
Defines the weld strength reduction factor (Wc) used to reduce the allowable stress for the sustained load case. When you do not define a value, the software uses the material database value.
The software ignores this value when you set Ignore B31.1/B31.3 Wc Factor to True in the Configuration Editor.
B31.3 Chapter IX
Not used.
ASME Class 2 and ASME Class 3
Defines the primary stress index used for the given node on the current element.
Unless you otherwise override this value, the following values are applied for ASME Class 2 and Class 3 piping:
|
Straight Pipe: |
B1 = 0.5 B2 = 1.0 |
|
Curved Pipe: |
B1 = -0.1 + 0.4h; but not <0 or >0.5 B2 = 1.30/h**2/3 but not <1.0; h = tR/ rm**2 |
|
Intersections: |
B1 = 0.5 |
|
Butt Welded Tees: |
B2b = 0.4(R/T)**2/3 but not < 1.0 B2r = 0.5(R/T)**2/3 but not < 1.0 |
|
Branch Connections: |
(r < 0.5R) B2b = 0.50 C2b but not < 1.0 B2r = 0.75 C2r but not < 1.0 C2b = 3(R/T)**2/3 (r/R)**1/2 (t/T)(r/FTG ro) but not < 1.5 C2r = 1.15(r/t)**1/4 but not < 1.5 |
BS-7159 and UKOOA
Defines the pressure stress multiplier, m, if it is different than the code requirements. For straight pipe, m = 1.0; for bends and tees, m is defined in Figures 7.1 and 7.12 of the BS 7159 Code.
IGE/TD/12
Override the cyclic pressure stress intensification factor Ip (Cyc) if it is different than the code calculations (calculated according to Table 9, Figure 5, and Figure 7 of the code).