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Strong Built Establishments Builders
SBE Builders is a commercial and residential framing contractor located in Discovery Bay California.
Dedicated to the art of Carpentery & Roof Framing. We are the professionals for the future of the craft of carpentry.
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Using the Law of Sines c = ( a × sin( C ) ) ÷ sin( A) c = Dormer Roof Rafter Length C1 = 90° - Dormer Roof Pitch Angle C2 = 90° - (Main Roof Pitch Angle - Dormer Roof Pitch Angle) C = 90° - Dormer Roof Pitch Angle + (90° - (Main Roof Pitch Angle - Dormer Roof Pitch Angle)) C = C1 + C2 A = Main Roof Pitch Angle - Dormer Roof Pitch Angle a = Dormer Roof Run Dormer Roof Rafter Length = (Dormer Roof Run × sin(90° - Dormer Roof Pitch Angle + (90° - (Main Roof Pitch Angle - Dormer Roof Pitch Angle)))) ÷ sin(Main Roof Pitch Angle - Dormer Roof Pitch Angle ) or Dormer Roof Rafter Length = (Dormer Roof Run × sin(C)) ÷ sin(A) or Dormer Altitude = sin(Dormer Roof Pitch Angle) × Dormer Run Dormer Altitude Run = Dormer Altitude ÷ tan(Dormer Roof Pitch Angle) Dormer Miter Cut Angle = Main Roof Pitch Angle - Dormer Roof Pitch Angle Main Altitude Run = Dormer Altitude ÷ tan(Dormer Miter Cut Angle) Dormer Rafter Length = Dormer Altitude Run + Main Altitude Run Main Intercept Run = (Dormer Rafter Length × cos( Dormer Roof Pitch Angle)) - Dormer Run
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The book includes step by step instructions on developing stereotomic drawings on Art du Trait de Charpente, Trestles, Tréteau à devers, Canted Trestles, Louis Mozerolles' Joiners Table, Sawhorses, and the Saint Andrews' Cross, twisted crosses. You'll also find theories on hip rafter shift-offset, standard roof framing kernel trait drawings, German Schiften DP-Shadow Line techniques, folding net roof surface and net plane geometric development, when hip rafters collide, the Warlock Cut, and developing upper and lower claws on rafters using Axioms.
The book includes step-by-step instructions on developing stereotomic double curvature drawings for circular work in carpentry. Some of the techniques presented in this book are thousands of years in the making. As carpenters, we shouldn't have to re-invent the wheel each time we are faced with new challenges. There is a likely hood that someone, that came before us, has already refined a technique that we can use today. The tools might have changed, but the piece of wood that it is twisting and turning remains the same piece of wood.
Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't offer.
This iPhone app is for rough frame carpenters that don't build stairs everyday, but could use an stair app calculator to check their stair building calculations.
Build a set of stairs that you are gonna be proud of.
With Stair Tangent you can elimenate cumulative math errors when building - constructing stairs.
Crown Molding Tools
crownmoldingtools.com
