Framing a Supporting Valley

On this roof, the main structural valley rafter intersects and is supported by the main ridge beam. This longer, supporting valley rafter carries the lower (minor) ridge and the intersecting (supported) valley.

All cheek cuts on the main (supporting) valley rafter and on all the jacks are 45 degrees. The intersecting (supported) valley has a 0-degree cheek cut.

We added extra studs to the rake walls where the valleys intersected the wall to create full-height structural columns. We then fastened the valleys to the face of these columns using FastenMaster TimberLok screws, which will be loaded in shear.

For the inside ply of the supporting valley, there is a triangular “step” at the intersection where the bevel reverses direction.

We chose to drop the intersecting (minor) ridge.

We beveled the bottom edge of the intersecting ridge to allow for a nice, clean drywall line.

At the intersection of the valleys and the minor ridge, we ran 5/8-inch threaded rod and used bearing plates to spread the load over 6-by blocks cut at 45 degrees.

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