Octagon Roof Framing Detail

This gazebo looks like a scene out of paradise.

Octagon roof framing detail.

In this example the octagon segments are 4 ft. The drawing shows standard details for an octagon wooden gazebo. The hip rafter angle is not the same as a 90 plan angle. First i figure out the framing dimensions with a calculator.

There are many differences between the gazebo shown and others many features will change between. 6 159 on the tongue and 10 on the body to draw out the plumb and level cuts of the octagon hip rafter. But once you step inside it has a great space for sitting resting or even sleeping. 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.

And to amp it up a notch there is a cooler on the floor. The tangent of 22 5 41421 laying out an octagon using a framing square we would take 12 on the blade and the number to be taken on the tongue is 12 41421 which is 4 97 or nearly 5. It has a raised floor and an interesting roof line that catches your attention at first glance. Long and combine to create a base width of 9 ft.

The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch. 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. Figure 2 2 roof framing terms. What more could your heart desire in a gazebo.

Line length is the hyptenuse of the triangle whose. 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. 8 10 roof rafters are 2 x 4. One half of 45 is 22 5.

18 use 2 x 6 etc. Then i cut all the parts and assemble the roof on the deck next to its intended location. The octagon plan angle is 67 50. Or they could have purchased a chappell master framing square that has the hexagon and octagon roof framing information printed on the square.

How to draw any polygon with an compass straight edge. 1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches.