A parallel chord truss is different from most other timber frame trusses in that it is not triangular in shape. They have a rectangular design, with the top and bottom chords (the long straight elements of the truss) strengthened and […]
Parallel Chord Truss Read More »
Just the housings and rafters to cut this boss pin detail would certainly challenge any timber framer. The central post is typically called a boss pin, and it is used when you have several hips and valleys coming together at
Hexagonal Heavy Timber Frame Boss Pin Detail Read More »
Creating a lookout in the gable of a home creates a dramatic effect both visually and structurally. Here is a timber frame lookout detail.
Timber Frame Lookout Detail Read More »
This exploded view is of a king post to tie wedged tenon – a wedged king post tenon in a truss frame from a famous meeting house. The tie is a 12 x 12, and the king post is an
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This is an exploded view of a king post’s bottom tenon where it goes through a very large tie beam. The king post tenon is secured with pegs into the tie beam. A king post hangs down from two rafters
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This timber detail exploded view is of a collar beam, which is a 4×4 connecting to a 4×6 rafter.The pitch is 12/12, and the tenon is set off the reference face 1 1/2″ and then 1 1/2″ thick, with a 3/4″
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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
Step Lap Rafter Tail and Plate Read More »
This joint is known as the tongue and fork joint. Here is an exploded view of two 4×6 rafters at 12/12 pitch with 1 1/2″ tenon set 1 1/2″ off the reference side with a 3/4″ oak peg.To ensure a
Rafters at Ridge – Timber Frame Tongue and Fork Joint Read More »
This is an exploded view of a pair of 4″ x 9″ timber frame rafters where they meet at the ridge. They are connected with a half-lap joint and peg.The roof pitch is 8/12, and the peg is a 3/4″
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