Steps To Extract a Tetrahedron In Google SketchUpīilly Dillon called my copy of "Traité Théorique et Pratique de Charpente" by Louis Mazerolle Timber Porn and it pretty much stayed a porn book on Stereotomy geometry until I read through Tim Moore's blog on Stereotomy. The Timber Framing Hawkindale Angle Formulas developed by Rees Acheson from the Martindale Hip and Valley Roof Angles and edited by Ed Levin of the Timber Framers Guild was the first Tetrahedron development for roof framing angles, but Joe Bartok's Tetrahedron Trigonometric Identity Formulas gave us the ability to find the roof framing angles in any type of Tetrahedron. The Tetrahedron Trigonometric Identity Formulas by Joe Bartok are what I consider the most important roof framing document developed over the last 100 years. Tetrahedron Trigonometric Identity Formulas Tetrahedron Extracted From Jack Rafter Side Cut At Hip Rafter The Trapezoidal Timber generated from the Roof Framing Geometry plugin based on the Skewed Rafter on page 52 in "Traité Théorique et Pratique de Charpente" by Louis Mazerolle. Google SketchUp Plugin - Roof Framing Geometry Version 1.1 Hexagon and Octagon Roof Framing GeometryĮyebrow & Barrel Roof Dormer Structural Design If the 2 tetrahedrons don't align with the hip rafter than the roof is unconstructable.Īpprentice Carpentry Roof Framing Geometry Part 1Īpprentice Carpentry Roof Framing Geometry Part 2Ĭhappell Master Framing Square and the Purlin Lip Cut AngleĬhappell Master Framing Square Unequal Pitched Roof ReviewĪd Quadratum - Seed of Life - Ad Triangulum Router Templates The Minor Tetra Angle is from an function that I wrote that tries to draw the 2 tetrahedrons for the 2 different pitches. This is another good example of the different math functions on different platforms and different devices calculating different angles when the roof is unconstructable to begin with. Here's a screen shot of my Android Frieze Block Miter Angle & Saw Blade Bevel Angle app showing Minor Tetra Angle = 22.99236°. ![]() Unconstructable Irregular Roof Framing and My Android App Hip Rafter Offset for Hexagon and Octagon Roof Framing Segmental Arches - Gothic Arches - Lofting Ellipses - Groin Vaults To use this Rake Wall Calculator scroll left in Rafter Tools until the Rake Wall Angles calculator is displayed. This hip rake wall can be calculated using Rafter Tools, Plan A Calculator. Tim Uhler framed a house with a hip rake wall that was rotated into the roof surface. Hip Rake Walls Rotated Into The Roof Surface World Skills International Competition Roof Design
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