Gable End Roof Overhang Framing

Framing for gable end overhangs rakes for steel framing is codified in the irc 2012 2015 r804.

Gable end roof overhang framing.

Then load bearing roof beams fixed to the trusses are extended in the same way. The american wood council s 2012 wood frame construction manual defines rake overhang as the horizontal projection of the roof measured from the outside face of the gable endwall to the. Due to the steeper angle of gable roof the maximum width of the eaves is narrower than other shed styles. Framing a gable roof building a gable with barge end purlin struts and collar ties.

Uplift of roof decking at the overhang. A rake on the gable end of the roof can be created with the construction of additional roof framing. For the arrangement of the gable end overhang for the standard roof you lengthen the ridge beam beyond the facade for previously verified length using cut rafters. There are no similar requirements for wood framing.

The biggest problems with gable end overhang strength occur if your roof overhang is greater than about 12 inches. That rafter outside forms the overhang for the barge boards to fix to and so the soffit boards and ventilation are continuous all the way. For slanted roof sheds overhangs add character and facilitate proper drainage. The other common wind related failure at gable ends is uplift of the roof decking at the overhang.

Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. After that you should fix the cornice board to the end sides of the ridge and the load bearing beams. This can be from two causes. Due to the shed s design a significant amount of rain.

Of the many ways that gable end overhangs are built the two most common ways are the use of ladder details and outriggers ladder details are usually adequate if the overhang is less than about 8 inches although they are frequently used for longer overhangs.