2 X 4 Roof Overhang

A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof.

2 x 4 roof overhang.

The table below shows common roof pitches and the equivalent grade degrees and radians for each. L stands for the span of the beam in feet. Most roof s have a pitch in the 4 12 to 9 12 range. The vertical rise of the top chord per 12 horizontal inches is the roof pitch or slope.

Now the example formula is 4 000 1 000 bd 2 9 x 10. That makes absolutely no sense. Joe your problem is at the corner of the roof at the eaves. F stands for the beam s fiber strength in bending which depends on the species of wood.

Erick c 4 23 2017 11 47 00 pm reply. So the corner is supported by one 2 x4 located usually 2 to 4 ft in from the exterior wall and the rough fascias making for a weak spot you feel when you walk the roof. Gable trusses are only dropped over the area of the building not the overhang. Two feet is the general maximum length for a typical roof overhang.

Does it mean to say 4 1 overhang at 12 o c. How can southern pine have less allowable overhang at 12 o c. I m not an engineer but i believe this is due to the added weight of the overhang. The total load is 4 000 pounds.

In the example the beam spans the 10 foot width of the roof. They are essential for framing and shading windows reducing splashback and getting rain to fall far enough away from the foundation. For the initial calculation f can be estimated at 1 000. Roof overhangs can extend farther than 2 feet but beyond this length they begin to lose structural integrity and require external supports.

Spacing than if it s 16 o c. This will protect a roof from most types of damage. Doing so keeps basements and crawlspaces dry and it also helps to. If the overhang extends beyond 24 inches say to 30 inches then a 2 6 top chord for the tail section will be required to handle the additional overhang.