Gable Roof Truss Detail

Standard gable end detail mii sheet 2 trusses 24 o c.

Gable roof truss detail. Gable trusses are more expensive than common structural trusses because more lumber is required. Framing a gable roof building a gable with barge end purlin struts and collar ties. Manufactured gable ends are actually frames even though they are often referred to as trusses. Girder truss that creates dutch hip style roof by supporting hips and jacks trusses.

The claim that truss designers provide standard details is also misleading. The three primary variables to consider when designing the eaves for a gable roof are the width of the gable trim the projection of the eaves and the details at the corner of the gable ends. The beam is formed over uncut block in courses successively shortened to match the slope of the roof. If a truss roof is used with this method the gable truss is manufactured 3 shorter than the others.

Lean to trusses are stocked in a 1 12 slope x 12 and 20 width and special order up to 30 wide. Creates roof plane by scotching over main trusses. Gable trusses are in stocked in a 4 12 slope x 20 24 30 and 40 width and special order up to 50 wide 60 for tubing trusses. The webs are studs oriented vertically and usually spaced at 12 16 or 24 in.

The truss manufacturer generally provides a set of truss diagrams to the builder along with a placement layout plan. Girder truss that supports hip end trusses such as hips and jacks trusses. A gable truss isn t structural and needs a continuous bearing support underneath such as a beam or wall. A gable truss sits on the end wall of a structure and has vertical studs every 2 feet or 16 inches.

Attached to vertical with 4 16d 0 131 x 3 5 nails and attached. 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 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. This first installment of a two part series focuses on eaves that do not return onto the gable.

Then the barge or fly rafter is attached to the end of the cantilevered outlooker. Figure 7a shows a continuously reinforced cast in place concrete rake beam along the top of the gable end wall. The second looks at the details of boxed eave gable end. Then a 2 4 outlooker is placed over the dropped gable and butted into the side of the adjacent full height truss.

2x6 diagonal brace spaced 48 o c. The manufacturer may or may not also submit a set to the architect with or without standard details for bracing gable endwalls. Roof sheathing 1 3 max. Gable lean to and header.

Gable end wall overhangs.