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.

Oval octagon rectangular and square gazebos number of pieces and framing of floors and roofs larger and smaller gazebos i e. In this example the octagon segments are 4 ft. Then i cut all the parts and assemble the roof on the deck next to its intended location. Figure 2 2 roof framing terms.

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. 6 159 on the tongue and 10 on the body to draw out the plumb and level cuts of the octagon hip rafter. 8 10 roof rafters are 2 x 4. The central angle for an octagon roof is 45.

The hip rafter angle is not the same as a 90 plan angle. What more could your heart desire in a gazebo. This gazebo looks like a scene out of paradise. The octagon plan angle is 67 50.

Using the chappell master framing square line 1 under 8 12 6159. There are many differences between the gazebo shown and others many features will change between. First i figure out the framing dimensions with a calculator. 18 use 2 x 6 etc.

The drawing shows standard details for an octagon wooden gazebo. 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. It has a raised floor and an interesting roof line that catches your attention at first glance.

But once you step inside it has a great space for sitting resting or even sleeping. One half of 45 is 22 5. 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. Long and combine to create a base width of 9 ft.

Line length is the hyptenuse of the triangle whose. The hip rafter pitch is the common rafter pitch over 13 in like 8in 13in for an 8in 12in roof pitch.