SBE Builders

Strong Built Establishments Builders

SBE Builders is a commercial and residential framing contractor located in Discovery Bay California. Our Systematic Construction Logic produces Strong Built Establishments. E-Defense stands for Earthquake-Defense.

Development of Tetrahedron for Platonic Solids Geometry
Wood polyhedron or Wooden Polyhedra
Compound Angles Calculator
This script returns the compound saw miter and saw blade bevel angles for cutting platonic solids out of wood.
Each edge of the platonic solid is a hip rafter.
Platonic Solid
Download Development of Tetrahedron Geometry DXF
Development of Tetrahedron Geometry .dxf -- auto generated DXF CAD file of Development of Tetrahedron geometry drawing each time script is run



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


Development of Tetrahedron
Development of Tetrahedron
Development of Tetrahedron with B Triangle Angle
Development of Tetrahedron

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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
Build it Green Framing Contractor
American Carpenter and Builder
California Licensed General Building Contractor
CA LIC.#  546126
Expert Witness for Construction Structural defects


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...

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 1830 to 2009

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

This Is Carpentry

Roof Framing 101

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