SBE Builders

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.

Development of Tetrahedron for Square Tail Fascia Geometry
based on Joe Bartok's Development of Tetrahedron Geometry
Joe Bartok's Square Tail Fascia Formulas
Joe Bartok's Web Site
square fascia hipnotes
hip models
sample calculations
Square Cut Fascia Angles and Dimensions Calculator
Square Cut Fascia intersects foot of Hip Rafter

Major Rafter Pitch Or Major Pitch Angle Minor Rafter Pitch Or Minor Pitch Angle Deck Plan Angle (0 - 180)
Fascia Thickness Fascia Width
Download Development of Tetrahedron for Square Tail Fascia Geometry DXF
Development of Tetrahedron for Saquare Tail Fascia Geometry .dxf -- auto generated DXF CAD file of Development of Tetrahedron for Fascia geometry drawing each time script is run


Development of Tetrahedron for Square Tail Fascias Angles
Development of Tetrahedron


Square Tail Fascia Material Cut Laying Flat (Side of Fascia, Perpendicular to Roof Surface)
Main Common Fascia Miter Angle = arctan (sin (Main Roof Pitch Angle)  tan( Adjacent Plan Angle)) 
Main Common Fascia Saw Bevel Angle = arcsin (cos (Adjacent Rafter Pitch Angle) * cos(Main Plan Angle)) 

Square Tail Fascia Material Cut On Edge (Top Of Fascia, in the Plane of the Roof Surface)
Main Common Fascia Miter Angle = arctan (cos (Main Roof Pitch Angle)  tan( Main Plan Angle)) 
Main Common Fascia Saw Bevel Angle = arctan (sin (Hip Rafter Angle)  tan(Adjacent Plan Angle)) 
------------------------------------------------------------------------------------------------------
Deck Angle = 90.00000
Main Plan Angle = 51.34019
Adjacent Plan Angle = 38.65981
Main Roof Pitch Angle = 33.69007
Adjacent Roof Pitch Angle = 39.80557
R1 Hip Rafter Angle = 27.50055
Main Jack Rafter Side Cut Angle = 33.64933
Adjacent Hip Rafter Backing Angle = 29.99339
90 - P2m Roof Sheathing Angle = 56.35067
Adjacent C5a Hip Rafter Backing Angle = 29.99339
90 - Adjacent C5a Hip Rafter Backing Angle = 60.00661

Square Tail Fascia Material Cut Laying Flat (Side of Fascia, Perpendicular to Roof Surface)
Main Common Fascia Miter Angle = arctan (sin (Main Roof Pitch Angle)  tan(Adjacent Plan Angle)) = 34.73648
Main Common Fascia Saw Bevel Angle = arcsin (cos (Adjacent Roof Pitch Angle) * cos(Main Plan Angle)) = 28.67914
Main Common Fascia Miter Angle = arctan (sin (33.69007)  tan(38.65981)) = 34.73648
Main Common Fascia Saw Bevel Angle = arcsin (cos (39.80557) * cos(51.34019)) = 28.67914

or

Square Tail Fascia Material Cut Laying Flat (Side of Fascia, Perpendicular to Roof Surface)
Main Common Fascia Miter Angle = arctan (tan (90 - Adjacent Hip Rafter Backing Angle) * sin(90- Main Jack Rafter Side Cut Angle)) = 34.73648
Main Common Fascia Saw Bevel Angle = arcsin (sin (90 - Adjacent Hip Rafter Backing Angle ) * cos(90- Main Jack Rafter Side Cut Angle)) = 28.67914
Main Common Fascia Miter Angle = arctan (tan (90 - 29.99339 ) * sin(90- 33.64933)) = 34.73648
Main Common Fascia Miter Angle = arctan (tan (60.00661) * sin(56.35057)) = 90- 55.26349 = 34.73651
Main Common Fascia Saw Bevel Angle = arcsin (sin (90 - 29.99339 ) * cos(90- 33.64933)) = 28.67914
Main Common Fascia Saw Bevel Angle = arcsin (sin (60.00661) * cos(56.35057)) = 28.67914


Square Tail Fascia Material Cut On Edge (Top Of Fascia, in the Plane of the Roof Surface)
Main Common Fascia Miter Angle = Main Jack Rafter Side Cut Angle
Main Common Fascia Saw Bevel Angle = Adjacent Hip Rafter Backing Angle
Main Common Fascia Miter Angle = arctan (cos (33.69007)  tan( 51.34019)) = 33.64934 
Main Common Fascia Saw Bevel Angle = arctan (sin (27.50055)  tan(38.65981)) = 29.99339





Development of Tetrahedron Geometry
based on Joe Bartok's Tetrahedron Developmental Geometry
Development of Tetrahedron Geometry
Development of Tetrahedron and Dihedral Angle for Polygons
Development of Tetrahedron for Compound Angles Geometry
Compound Miter and Bevel Calculator, To cut compound angles on the edge
Development of Tetrahedron for Purlin Geometry
Development of Tetrahedron using Hip Rafter Angle
Development of Tetrahedron using Jack Rafter Side Cut Angle
Development of Tetrahedron using Sheathing Angle
Development of Tetrahedron using Hip Rafter Backing Angle
Canadian & American Geometric Roof Framing Development Tetrahedron Calculator & DXF File
Development of Tetrahedron for Square Tail Fascia Geometry
Development of Tetrahedron for Hawkindale Formulas Geometry
Development of Tetrahedron for Crown Molding Geometry Using Spring Angle and Corner Wall Angle
Development of Tetrahedron for Crown Molding Geometry Using Slope Angle and Corner Plane Angle
Development of Tetrahedron for Crown Rake Molding Geometry

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SBE Builders
SBE Builders
5305 Laguna Ct.
Discovery Bay, California 94505
(925) 634-6022 • Fax: (925) 634-6022
Commercial & Residential Framing Contractor
American Carpenter and Builder
California Licensed General Building Contractor
CA LIC.#  546126


Roof Framing Geometry

  • Roof framing geometry is empirical-type knowledge.
  • Information gained by means of observation, experience, or experiment.
  • From ground Line 0: Z1, Z2, Z3 etc...
  • To Roof Axis 0: A1, A2, A3 etc...
  • To the bring back line 0 for scribing: B1, B2, B3 etc...

Roof Framing Geometry Blog

Rafter Tools for Android
With Quad Tetrahedra Analytic Algorithm Technology.
Helping apprentice carpenters on their journey to becoming master carpenters with Certification in roof framing.

Rafter Tools+ for iPhone

Rafter Tools+ is a rafter calculator for complex roof framing angles that other roof framing calculators don't offer.

RafterTools+

Stair Tangent for iPhone

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.

Stair Tangent
stairtangent.com

Crown Molding Tools
crownmoldingtools.com

Crown Molding Tools  

Carpenters Of Steel

Canadian & American Geometric Roof Framing Development
using a Steel Framing Square

Geometric Roof Framing Development for Irregular Hip Roof Calculations
using a Steel Framing Square

Geometric Development of Tetrahedron
using a Steel Framing Square

Hip Rafter Backing Bevel Angles from 1565 to 2013

Applied Geometry and Euclidean GeometryA lesson in Applied Geometry and Euclidean Geometry

This Is Carpentry

We're a member of the Timber Framers Guild

Timber Framers Guild

American College of the Building Arts, carpentry and timber framing programs.

American College of the Building Arts

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