Crickets using slope lines?

[patricks]

Is there no way to make a roof cricket using slope defining lines? It seems to me like that should work, since a cricket is sort of like a very small, shallow dormer. However I can never seem to get them to work. I have an opening (not an actual opening object, but just a rectangle sketched inside my roof's outer boundary sketch) cut in a roof where I have a roof-top mounted HVAC unit, and if I try using slope-defining lines on the upper edge of that opening, it always gives me some error, like either the arrow tails must be on the roof boundary, or it will simply flat-out refuse to make the roof footprint. What's the deal?

[sbrown]

You either have to have very small parallel slope defining lines, or us slope arrows.

[patricks]

DOH! I meant slope arrows in my post above. I'm trying to make a cricket above an open hole in a roof using slope arrows, and I just canNOT seem to get it to work.

[patricks]

My original post should have read like this:


Is there no way to make a roof cricket using slope arrows? It seems to me like that should work, since a cricket is sort of like a very small, shallow dormer. However I can never seem to get them to work. I have an opening (not an actual opening object, but just a rectangle sketched inside my roof's outer boundary sketch) cut in a roof where I have a roof-top mounted HVAC unit, and if I try using slope arrows on the upper edge of that opening, it always gives me some error, like either the arrow tails must be on the roof boundary, or it will simply flat-out refuse to make the roof footprint. What's the deal?

[SCShell]

Hey there,

I have found that slope arrows only work for the "main roof" sketched area. Any opennings or other boundries which are not the exterior edge, will not work.
To do what you are looking for, you need to place a second roof and design that separately with it's own slope defining element. Then you need to clean it up with the cut geometry tool and maybe a little drafting touch-up.

I do this for crickets, raised equipment platforms, skylights, tapered insulation above the roof deck etc. So far, it has worked pretty well for me.

Hope this is what you were asking.
Steve