Octagon Roof Framing Detail

Or they could have purchased a chappell master framing square that has the hexagon and octagon roof framing information printed on the square.

Octagon roof framing detail.

The octagon you are framing is an irregular octagon i conveniently choose 24 as the overall width of the square as well as the octagon to make the run of a common rafter 12 bc in the square ef in the octagon to find the run of the hip rafter ab in the square we could use the pathagorean theorem or we could use some simple trig. First i figure out the framing dimensions with a calculator. This gazebo looks like a scene out of paradise. Using the chappell master framing square line 1 under 8 12 6159.

The hip rafter angle is not the same as a 90 plan angle. The central angle for an octagon roof is 45. 8 10 roof rafters are 2 x 4. How to draw any polygon with an compass straight edge.

6 159 on the tongue and 10 on the body to draw out the plumb and level cuts of the octagon hip rafter. What more could your heart desire in a gazebo. And to amp it up a notch there is a cooler on the floor. The drawing shows standard details for an octagon wooden gazebo.

The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch. Then i cut all the parts and assemble the roof on the deck next to its intended location. It has a raised floor and an interesting roof line that catches your attention at first glance. One half of 45 is 22 5.

If the unit of rise in inches is 3 then the cut is the unit of rise and the unit of run 12 inches or 3 12. Watch this video for a virtual tour of an octagonal roof framing model created in sketchup for the exploring octagonal roof framing tutorial at the digital. Oval octagon rectangular and square gazebos number of pieces and framing of floors and roofs larger and smaller gazebos i e. Line length is the hyptenuse of the triangle whose.

Long and combine to create a base width of 9 ft. There are many differences between the gazebo shown and others many features will change between. The octagon plan angle is 67 50. 18 use 2 x 6 etc.

In this example the octagon segments are 4 ft. Figure 2 2 roof framing terms.