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How to Calculate Rafters for Intersecting Roof Planes the Easy Way
comments (0) January 26th, 2012 in Blogs
Matt Jackson, member
Intersecting roof plane rafters for a porch roof
Plane and Simple
Using a rotary dial phone never seemed problematic to me, that is, until I tried the new-fangled touch-tone design. In comparison, figuring rafter layout with a framing square and rafter tables was acceptable until I got a construction calculator. And now, with access to SketchUp as a "visual calculator" rafter calculating is really plain and simple. (one of those plains is mispelled). This video shows how I go about modeling and measuring a shed roof rafter in 4.25:12 pitch:
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Perspective
The more I use SketchUp for this type of construction math, the more I come to rely on it. While there is no substitute to the depth of insight and knowledge of roof framing gained in the jobsite environment it's nice to have access to such a powerful tool for crunching layout numbers. All I need now is someone to show me how to text with my rotary dial phone and I'll be set...
BTW
You can download the Intersecting Roof Planes Model created in this blog post from the SketchUp warehouse by clicking here if you want to use it as a virtual guinea pig.
posted in: Blogs, framing, rafter, shed, roof, pitch, slope, angle, plane, square, intersecting, dormer
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The Digital Job Site
Get the inside scoop on how builders, remodelers, and architects use the free 3-D modeling software Google SketchUp to design projects and present them to clients.
You'll find practical advice on how to use this powerful drawing tool, and get some insight into how some experienced builders and designers have workied it into their set of everyday tools. If you are new to SketchUp, you might want to get warmed up with a few of Google's free tutorials.
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