Rake Crown Mouldings with No Transitions

 Crown Moulding Tools help file for Rake Crown Moulding with no Transition pieces. Sloped ceilings with rake crown moulding with transition pieces looks good, however a sloped ceiling with rake crown moulding with no transition pieces looks even better.






Crown Molding Tools for Android 







Crown Molding Tools for Android has been updated with 6 new calculators. Installing rake crown moulding is complex, but these calculators will hopefully simplify the task.
  1. Calculate Horizontal to Rake Wall No Transitions
  2. Calculate Rake Wall To Horizontal at Corner Wall No Transitions
  3. Calculate Rake Crown to Rake Crown No Transitions
  4. Calculate Rake To Level No Transitions
  5. Calculate Rake To Level Return No Transitions
  6. Calculate Rake To Rake at Peak No Transitions
           















These pictures were taken at The Moulding Company  in Concord California. The rake crown mouldings were installed by Christian Murtha.





For rake ceiling crown moulding with no transitions, you have to roll the crown moulding to a different spring angle for the length of the crown moulding miter cuts to be the same length. The crown moulding positioned on the lower horizontal wall will be set at the spring angle of the crown moulding. The shallower the spring angle of the crown moulding the roll-tilt of the crown moulding running up the rake wall will look better. Crown moulding with a spring angle of 38° should be your first choice. The rolled crown spring angle is equal to the Crown Moulding Spring Angle + Rake Ceiling Slope Angle. With an 38° spring angle and a roof slope angle of 33.69007°, 8:12 pitch, the rolled crown spring angle is equal to 38° + 33.069007° = 71.69007°. With a 45° spring angle it would be equal to 45° + 33.69007° = 78.69007°.

All of the crown moulding should be back beveled to set tightly against the ceiling. Use the Crown Slope Reference Plane Angle to back bevel the top edge of all of the crown moulding.

Start with the lower horizontal crown moulding. Place the lower horizontal crown moulding against the wall and scribe the bottom of the crown moulding for a reference line. Draw parallel lines from the rake ceiling for the rake crown moulding. Do not use the same dimension as the  horizontal crown moulding reference line for the rake ceiling reference line. These are parallel lines determined by the intersection of the bottom of the horizontal crown moulding with the rake ceiling wall.




Roof  Pitch  in Inches per Rise of  Roof in 1 Foot of Run -- Roof Slope Angles
  • 0.5:12 = 2.38594°
  • 1:12 = 4.76364°
  • 1.5:12 = 7.12502°
  • 2:12 = 9.46232°
  • 2.5:12 = 11.76829°
  • 3:12 = 14.03624°
  • 3.5:12 = 16.26020°
  • 4:12 = 18.43495°
  • 4.5:12 = 20.55605°
  • 5:12 = 22.61986°
  • 5.5:12 = 24.62356°
  • 6:12 = 26.56505°
  • 6.5:12 = 28.44293°
  • 7:12 = 30.25644°
  • 7.5:12 = 32.00538°
  • 8:12 = 33.69007°
  • 8.5:12 = 35.31121°
  • 9:12 = 36.86990°
  • 9.5:12 = 38.36749°
  • 10:12 = 39.80557°
  • 10.5:12 = 41.18593°
  • 11:12 = 42.51045°
  • 11.5:12 = 43.78112°
  • 12:12 = 45.00000°
  • 12.5:12 = 46.16914°
  • 13:12 = 47.29061°
  • 13.5:12 = 48.36646°
  • 14:12 = 49.39871°
  • 14.5:12 = 50.38931°
  • 15:12 = 51.34019°
  • 15.5:12 = 52.25319°
  • 16:12 = 53.13010°
  • 16.5:12 = 53.97263°
  • 17:12 = 54.78241°
  • 17.5:12 = 55.56101°
  • 18:12 = 56.30993°
  • 18.5:12 = 57.03060°
  • 19:12 = 57.72436°
  • 19.5:12 = 58.39250°
  • 20:12 = 59.03624°
  • 20.5:12 = 59.65675°
  • 21:12 = 60.25512°
  • 21.5:12 = 60.83239°
  • 22:12 = 61.38954°
  • 22.5:12 = 61.92751°
  • 23:12 = 62.44719°
  • 23.5:12 = 62.94940°
  • 24:12 = 63.43495°
Key Words:
Cathedral ceiling rake crown molding miter and bevel angles
Vaulted ceiling rake crown molding miter and bevel angles
Sloped ceiling rake crown molding miter and bevel angles

Komentar

Posting Komentar

Postingan populer dari blog ini

Layover Valley Rafter Basics

Gambar
Before I get into the Hexenschnitt for the Layover Valley Rafter I needed to review the basic geometry that defines the layover valley rafter. I needed to make sure I could draw the layover valley rafter correctly in plan view (ground plan). Here's one method of a basic drawing using the layover valley rafter backing triangle to position the layover valley rafter material on the roof surface that defines the  layover valley rafter in plan view. The  layover valley rafter top bevel is easily defined by extending the  layover valley rafter backing triangle to the top of the  layover valley rafter. The other  layover valley rafter line in plan view is defined by the bottom edge of the  layover valley rafter material sitting on the  layover valley rafter backing triangle. (Roof Surface). The  layover valley rafter plan view lines at the intersection of the two roofs. I tried this method for drawing the  layover valley rafter, but this method seems to be slow of a process for determinin
Baca selengkapnya

Hip Rafter Edge Bevel and Backing Angle

Gambar
In complex roof framing there are 7 main roof framing angles. Hip Rafter Backing Angle Valley Sleeper Bevel Angle Plain Titl (DP) Main Plan Angle Adjacent Plan Angle  Main Profile Rafter Slope Angle Adjacent Profile Rafter Slope Angle In this article I will discuss the hip rafter backing angle and the valley sleeper bevel angle. These two angles determine the miter angle and and saw blade bevel angles for jack rafters and purlin rafters that are plumb to the earth and for jack rafters and purlin rafters that are skewed from the eave line. A thorough knowledge of these two angles is critical in complex roof framing using geometry or trigonometry. The hip rafter edge bevel was avoided in the 12th century on some roof structures by rotating the hip rafter into the roof surface plane. However, by avoiding the hip rafter edge bevel, the carpenters-builders had to have a knowledge of the Valley Sleeper Bevel Angle. They didn't call it the Valley Sleeper Bevel Angle, but it's the same
Baca selengkapnya

Layover Valley Rafter Hexenschnitt #3

Gambar
In the book Das neue Buch vom alten Wissen der Schiftung The new book on the ancient knowledge Schiftung The new book on the ancient knowledge Roof Framing The new book on the ancient knowledge Roof Framing Geometry by Bernd Küppers I'm stuck on page 23. The geometry in the book, just doesn't return the correct miter angle for the Layover Valley Rafter Witches Cut (Hexenschnitt). I don't know if I'm drawing it incorrectly, or the BE (Bottom Edge Plane of the Layover Valley Rafter) should be drawn differently. Similar drawing at File: Kehlbohle mit Hexenschnitt.jpg There's 3 canted planes that define the Layover Valley Rafter Witches Cut Miter Angle. The main roof surface, the square tail fascia plane of the main roof and the the square tail fascia plane of the adjacent roof.  I think the problem with my geometric drawings is defining the intersection of the roof surface with the adjacent  square tail fascia plane.
Baca selengkapnya