Problem:

W2 is entered as per image below,

Select the OK button and reopen the same load case,  AutoPIPE automatically changes the 1, 1 into 0.707, 0.707. WHY?

Furthermore, if you change the value and reopen the dialog screen the original 0.707 settings are updated to random values below 1.0. WHY?

Solution:

First while on this dialog, press the Help button and select the Hyperlink for "Wind Direction", when the help opens for this specific topic, the answer to the first question is answered by the last sentence of the paragraph "Upon saving the inclined direction vector..."

Second, to answer why the program is mysteriously updated to some values other than 1.0 or 0.707; answer, because the value was not correctly accepted by the dialog and the previous value is still being applied. On this and other dialogs, after updated a dialog field value, press the TAB keyboard key before using the mouse to select the OK button. Otherwise the program will ignore the new settings and use the original values that was originally entered before the update.

Again, solution read the online help to know why the values of Dx=1.0 and Dy = 1.0 are being changed, and always use the TAB  keyboard key after entering any data into any dialog.

See Also

Modeling "Wind" - Load Case

Bentley AutoPIPE