Sloped Straight Brushes Breaking

[CallMePuff]

So I'm new here and I'm working on a race track map. The track has been laid out flat, and recently given elevation. So most of the brushes are ascending or descending. Now my problem is the straight bits. I create a brush, triangulate it (heard that works better) and proceed to connect the vertices to the brushes around it resulting in a straight sloped road. Looks all fine and dandy until I compile and view in Gmod, where they disconnect like so. http://imgur.com/EA5Ckfq Any ideas folks?

[marnamai]

any invalid brushes in the map?

[LordDz]

Post compile log?

[CallMePuff]

any invalid brushes in the map?

From what I remember, no. I'll post the log when I get home.

[marnamai]

invalid brushes aren't listed in the compile log afaik. Goto map / check for problems (alt+p)

[CallMePuff]

invalid brushes aren't listed in the compile log afaik. Goto map / check for problems (alt+p)

I've been checking with alt p and no errors are found.

[Knights]

No point in looking at the log like others said, you can't angle some brushes in weird ways and hammer will know it and move it to a suitable point that won't match what you were going for. You'll have to play around with it more more and cut triangles into it until the editor likes it...

[SmileTime]

Agree with what Knights said but this is odd, the side face doesn't seem to lineup with the top face so it might be a more serious issue.

Usually it's not that the geometry is bad, but rather that the file format has a limited precision so it's not being saved accurately. Here are a few tricks that often fix the problem by changing the brush slightly without changing your design:

Making the brushes thicker. Your top face remains the same so your geometry isn't changing, but since it's thicker so there more precision.

Make the bottom flat. Have the bottom of the brush parallel to the grid rather than parallel to the top.

Pyramiding. Like triangulating the top face you take it one step further and have each of those triangle be part of a three sided pyramid. So the bottom three vertices collapse into a single vertex.

These might not fix it but often do.