Gable End Roof Overhang Framing

The other common wind related failure at gable ends is uplift of the roof decking at the overhang.

Gable end roof overhang framing.

There are no similar requirements for wood framing. Uplift of roof decking at the overhang. Due to the steeper angle of gable roof the maximum width of the eaves is narrower than other shed styles. 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.

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. Framing a gable roof building a gable with barge end purlin struts and collar ties. Inadequate nailing of the sheathing to supporting framing or inadequate connections of the framing at the rake edge that supports the roof. After the end points of the plates are located the length is found using a base 1 triangle for a 6 in 12 pitch where the hypotenuse is 1 118 times the length of the base.

A rake on the gable end of the roof can be created with the construction of additional roof framing. This can be from two causes. Due to the shed s design a significant amount of rain. The biggest problems with gable end overhang strength occur if your roof overhang is greater than about 12 inches.

Framing for gable end overhangs rakes for steel framing is codified in the irc 2012 2015 r804. Then load bearing roof beams fixed to the trusses are extended in the same way. After the gable is framed lookouts extend from the first rafter inside the gable wall out over the plates to support the overhanging barge rafter. 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.

The picture above shows the plan view of a gable roof ladder trusses are made up using four noggins bridging at each corner to support a rafter outside the building.