Octagon Roof Framing Detail

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.

Octagon roof framing detail.

1 8 pitch is given so 24 x 1 8 equals 3 or unit of rise in inches. The octagon plan angle is 67 50. Figure 2 2 roof framing terms. 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. 8 10 roof rafters are 2 x 4. In this example the octagon segments are 4 ft. 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.

How to draw any polygon with an compass straight edge. The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch. Using the chappell master framing square line 1 under 8 12 6159. The drawing shows standard details for an octagon wooden gazebo.

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. Line length is the hyptenuse of the triangle whose. One half of 45 is 22 5. The hip rafter angle is not the same as a 90 plan angle.

It has a raised floor and an interesting roof line that catches your attention at first glance. The central angle for an octagon roof is 45. But once you step inside it has a great space for sitting resting or even sleeping. Then i cut all the parts and assemble the roof on the deck next to its intended location.

First i figure out the framing dimensions with a calculator. What more could your heart desire in a gazebo. 18 use 2 x 6 etc. And to amp it up a notch there is a cooler on the floor.

This gazebo looks like a scene out of paradise. 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.