How do I rotate my gridlines so that they are perpendicular to levels. I.e 90 degrees?

[slejjjjj]

Hi,

I have used a curtain system applied to a mass. How do I get a pricise rotation on my gridlines? The problem is I want the grids on gable ends of glass house to be 90 degrees. Due to the sloping roof they are orientated to the roof angle. I have attempted to rotate using the properties of curtain system but to no avail. Please let me know if you have a solution.

See attached diagram. Red lines indicate what I want to achieve.

Many thanks
Simon

[Brian Myers]

You should be able to do this if the walls on the side are just a regular curtain wall, perhaps while the wall profile modified to match the slope, and then manually placing the mullion locations where you require them (ideally, from an elevation view).