trim a wall to roof

[gustavson.michael]

How do I trim a wall to a sloping roof? I'm using Autocad 2008 in A 3D Mode.

[jaberwok]

Using Solids?
Make a copy of the roof in the same location (copy @ 0,0,0) and Subtract it from the wall(s). Note multiple separate walls will be Unioned if one roof is subtracted from the group of walls. If there is spare material left above the roof line, use Separate (from the Solid_Editing toolbar is easiest) then the surplus can be deleted.

[Andy.88917]

Using ACA try the "roofline" command. I use roofline and floorline daily to trim/extend/slope walls to match roofs.