Spline Joinery
When two plates or beams come together into the same plane on a post, there is often not enough thickness in the post for each plate to connect to it with a tenon. If you put a tenon on […]
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Tie Beam to Plate Tying Joint
As its name implies this tie beam to plate tying joint, unites a tie beam, plates, rafter and posts all in a compact structurally sound way. It utilizes a spline to tie the plates together and traditional mortise and tenon joinery
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Hexagonal Frame Plate to Rafter Connection
In a hexagonal timber frame where the plates around the perimeter join with the principal rafter, it is a bit tricky from an engineering standpoint. This is just one solution, and in this case, a steel post was used instead
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Birds Mouth at Timber Frame Rafter Foot
Here is an exploded view of a bird’s mouth rafter foot where it meets the plate. A typical timber frame joint where a rafter meets a plate is called a bird’s mouth, and this is a tremendous isometric rendering of
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Step Lap Rafter Tail and Plate
This joint is known as a “step lap rafter tail,” and the joint in the plate is known as a step lap rafter seat. I believe it gets its name as the tail laps over the plate, which creates an
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Timber Frame Rafter Seat Housing Joinery
This is an exploded view of a rafter foot and seat on a plate – a rafter seat housing. Here, you can see the plate with the post below. The rafter with a notch cut into the back side
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Step Lap Rafter Seat on Timber Frame Plate
This is a view of a step lap rafter seat on an 8×8 plate. The joint gets its name as the rafter laps over the plate to create an overhang for shedding rain water off the roof away from the
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Post Top Tenon at End of Plate
This is an exploded view of a post top tenon when the post is at the end of the plate. The tenon is 2″ off the side of the post and 2″ thick. The tenon is cut back 2″ from
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Post Top Tenon in Middle of the Plate
Post Top Tenon in Middle of the Plate – This is an exploded view of the post’s top tenon where it meets the middle of the plate. As you can see, the tenon is only reduced to 1/2″ under the
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Timber Frame Spline Connection Detail with Two Knee Braces
Often, a spline is used in a timber frame to reduce the amount of wood that is taken from a post or beam; this particular connection detail has two knee braces flanking the spline.
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