Skewing cross-section geometry data

Chris,

I'm working on RiverCAD with Chris Long and company out of Seattle. I have a question that I can't find an answer to in the RiverCAD manual. Am I able to skew my cross-section data? I know I can rotate the topo link line which visually skews the cross-section; however, the cross- section data is not automatically adjusted based on the skew angle. This feature is available in Hec Ras. Do you know if it is available in RiverCAD?

Thanks for addressing this.
Regards,
Jane Eaket, M.Sc., E.I.T.
jeaket@nhc-edm.com

Dear Jane :

You can adjust the ground geometry for skew. Select Input | Ground Geometry | Adjust Geometry. This dialog box will allow you to adjust the ground geometry stationing by using the cosine of the angle as a multiplication factor. Note, however, that this adjustment only changes the ground geometry--not bridge low chord or roadway geometry.

Sincerely,

Chris E. Maeder, M.S.
Senior Technical Engineer
chris.maeder@bossintl.com

Chris,

I have tried what you suggested and can't find the skew option within the adjust geometry box. There are a few other options for adjusting the geometry but none are an obvious option for skewing the geometry. Do you know what the skew option is called within the "Adjust Geometry" dialog box.

Thanks.
Jane Eaket, M.Sc., E.I.T.
jeaket@nhc-edm.com

Dear Jane :

There is a section titled "Adjust Stationing". Define the cosine of your angle of skew in the data entries "Left Overbank Factor", "Channel Factor", and "Right Overbank Factor". These entries will then be multiplied against the current cross-section's ground stationing, thereby counteracting the cross-section skew.

Sincerely,

Chris E. Maeder, M.S.
Senior Technical Engineer
chris.maeder@bossintl.com