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.

This Pitch Break Shed Roof calculator will return roof framing trigonometry & geometry details for:

  1. Pitch Break Shed Roof Rafter Length
  2. Pitch Break Shed Roof Miter Angle (Rake Cut Angle)
  3. Total Pitch Break Run ( Intersection of Shed Roof and Main Roof)
  4. Main Roof Intercept Length
  5. Main Roof Run To Intersection of Main Roof And Shed Roof

Pitch Break Shed Roof Rafter Calculator

Pitch Break Shed Roof Details
    Main Roof Pitch
    Shed Roof Pitch
    Main Roof Rafter HAP
    Shed Roof Rafter HAP
    Main Roof Rafter Material Depth
    Dormer Roof Rafter Material Depth
    Plate Line Height Difference entered in Inches
Enter a negitive number if the Shed Roof PL is below the Main Pl
    Shed Roof Run
Entered in Inches

show results in feet & inches


results are show below in the IFrame window

Pitch Break Shed Roof Dim

Law Of Sines

  
Using the Law of Sines 
c = ( a × sin( C ) ) ÷ sin( A)

c = Shed Roof Rafter Length
C1 = 90° - Shed Roof Pitch Angle
C2 = 90° - (Main Roof Pitch Angle - Shed Roof Pitch Angle)
C = 90° - Shed Roof Pitch Angle + (90° - (Main Roof Pitch Angle - Shed Roof Pitch Angle))
C = C1 + C2
A = Main Roof Pitch Angle - Shed Roof Pitch Angle  
a = Shed Roof Run

Shed Roof Rafter Length = (Shed Roof Run × sin(90° - Shed Roof Pitch Angle + (90° - (Main Roof Pitch Angle - Shed Roof Pitch Angle)))) ÷ sin(Main Roof Pitch Angle - Shed Roof Pitch Angle )
or
Shed Roof Rafter Length = (Shed Roof Run × sin(C)) ÷ sin(A)
or
 
Shed Altitude = sin(Shed Roof Pitch Angle) ×  Shed Run
Shed Altitude Run = Shed Altitude ÷ tan(Shed Roof Pitch Angle)
Shed Miter Cut Angle =  Main Roof Pitch Angle - Shed Roof  Pitch Angle
Main Altitude Run = Shed Altitude ÷ tan(Shed Miter Cut Angle)
Shed Rafter Length = Shed Altitude Run + Main Altitude Run
Main Intercept Run = (Shed Rafter Length  × cos( Shed Roof Pitch Angle)) - Shed Roof Run
  
   
  

  
  
SBE Builders
SBE Builders


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Book I & Book II. These roof framing books were written to make complex roof framing simple..

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Build a set of stairs that you are gonna be proud of.
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