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Thread: Baseline height
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02-17-2014, 11:53 PM #5
I think the attached images will add visual confirmation to the information given to you already. The model I used had 2 x 10 (9-1/4") rafters, 2 x 6 (5-1/2") walls and an 8:12 roof pitch. As Gerry indicated, Chief calculates the birdsmouth automatically. If there had been no birdsmouth, the heel height would have been 11-1/8". Since there is a birdsmouth, the actual heel height is 7-7/16", making the birdsmouth cut 3-11/16".
There's some good explanations in Help (F1) that do a decent job of explaining how roof planes function and can be manipulated to get the results you need.
Check out the Roof Plane Specification Dialog section for additional information besides what is shown in these last two images.
Hope these visuals help you with your roof planes. If you ever get a project where you are having trouble getting all your roof planes joined correctly, it is very helpful to tile a 3D overview along side your plan view such that you can use one or the other as you work.
Also keep in mind that Chief can do most of your roof plane building for you if you select the individual walls, go to the roof plane tab, and set the properties of the roof planes bearing on each wall. You may still have to do a little editing on some roofs but I find it very helpful to let Chief do all or most of the work and I cleanup any problem areas.Curt Johnson
X5
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