Irregular Hips Roof Framing Geometry

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. Is your building ready for the next Earthquake?

Irregular Hips Geometry
based on Joe Bartok's Hip Roof Developmental Geometry

Major Rafter Pitch	Or Major Pitch Angle	Minor Rafter Pitch	Or Minor Pitch Angle	Building Span	Building Length
				feet inches frac	feet inches frac
Common Rafter Width	Hip Rafter Width	Ridge Width	Plate Width	Rafter O.C. Spacing	Major Rafter Pitch Overhang	Show Feet Inches

Download Irregular Hip Rafter Geometry DXF
Irregular Hip Geometry Framing.dxf -- auto generated DXF CAD file of irregular hip geometry drawing each time script is run

Draw lines in this order for irregular hip roof developmental geometry Line A-B = Major Pitch Common Rafter Run Line B-C = Minor Pitch Common Rafter Run Line A-E = Major Pitch Rise Line A-F = Major Pitch Rise Line E-B = Major Pitch Common Rafter Length Line A-C = Hip Rafter Run Line F-C = Hip Rafter Length Line C-D = Hip Rafter Length Line B-D = Major Pitch Common Rafter Length Line C-J = Hip Side Cut Rise Line A-G = Hip Backing Rise Line A-K = Hip Backing Rise Line K-A � Line M-A = Hip Backing Angle Line H-C � Line C-F = Hip Side Cut Angle At Ridge Line F-A � Line C-A = Hip Pitch Angle Line A-B � Line C-B = Major Plan Angle Line B-D � Line C-B = Major Pitch Sheathing Angle Line C-B � Line D-B = Major Pitch Jack Rafter Side Cut Angle

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
Licensed 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...