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.

Octagon Roof Interior Crown Molding Angles Development Calculators

 


Corner A Crown Molding Calculator
Corner B Crown Molding Calculator
Corner C Crown Molding Calculator
Polygon Crown Molding Angles Development & Calculator

 


Corner A Crown Molding Calculator
Corner B Crown Molding Calculator
Corner C Crown Molding Calculator
Polygon Crown Molding Angles Development & Calculator
Interior Crown Molding Miters & Bevels for Octagon
This image is for a plan angle of 135° with the crown going from horizontal to a vertical slope.
Crown Slope Angle = 10.37993°
Corner Angle = 129.76216°
Crown Miter Angle = 24.75746°
Crown Bevel Angle = 4.38648°

This image is for a plan angle of 135° with the rake crown turning the vertical plane corner.
Crown Slope Angle = 10.37993°
Corner Angle = 140.23784°
Crown Miter Angle = 19.58065°
Crown Bevel Angle = 3.51282°

Front view of both Octagon crown molding corners turning in the vertical plane.

You can see from this image that the backside of the crown molding needs to be beveled to rest flat against the ceiling.

You can see from this image that the backside of the crown molding needs to be beveled to rest flat against the ceiling.

 

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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...

Rafter Tools for Android
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Helping apprentice carpenters on their journey to becoming master carpenters with Certification in roof framing.

Crown Molding Tools
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Crown Molding Tools  

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using a Steel Framing Square

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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

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