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″ hardwood peg.
Purlin Joints at Rafter
Here is an exploded view of a pair of purlins where they meet the rafter. Each frame design should be reviewed by an experienced timber framing engineer for the exact design of this joint. Loads, spans, type off wood, and possibly other factors will have to be considered when designing this joint. My examples are [...]
Birds Mouth at Timber Frame Rafter Foot
Here is an exploded view of a birds mouth rafter foot where it meets the plate.
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 it name as the tail laps over the plate which creates an overhang to shed the rain water away from the side of the building. And that [...]
Rafters at Ridge – Timber Frame Tongue and Fork Joint
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. These rough sawn rafters have also been reduced down to the next smaller 1/2″ in size at [...]
Half Lap Timber Frame Rafters at Ridge
This is an exploded view of a pair of 4″ x 9″ timber frame rafters where they meet at the ridge. The roof pitch is 8/12 and the peg is a 3/4″ x 10″ peg.
Rafters at Ridge – Butt Joint
There are three basic ways to join the rafters at the ridge. This is the most basic way which is to just butt the two rafters together. Most of the time these are secured to each other with metal fasteners. But you could peg them.
Timber Frame Rafter Seat Housing Joinery
This is an exploded view of a rafter foot and seat on a plate. Here you can see the plate with post below. And the rafter with a notch cut into the back side of the plate for the rafter foot is sit on. The toe of the rafter has been trimmed to the outside [...]
Step Lap Rafter Seat on Timber Frame Plate
This is a view of a step lap rafter seat on a 8×8 plate. The joint gets it’s name as the rafter laps over the plate to create an overhang for shedding rain water off the roof away from the side of the building. And as the notch looks like a stair step. The amount [...]
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Birds Mouth at Timber Frame Rafter Foot Here is an exploded view of a birds mouth rafter foot where it meets the ... -
Drop in Floor Joist This is an exploded view of a drop in floor joist where it attaches to ... -
Anchor Beam through Tenon Dutch Style Timber Frame Barn This Dutch barn style through tenon is called an Anchor beam. Here is an exploded ... -
Queen Post Truss Similar in design to a King Post Truss, the Queen Post Truss uses two vertical ... -
1″ Diminished Housing Detail A diminished housing offers a way to dress up your frame as well as take ... -
Half Lap Scarf Joint with Table Here is an exploded view of a half lap scarf with tables. I suppose you ... -
Timber Frame Bridle Scarf Here is an exploded view of a scarf known as a timber frame bridle scarf. ...
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1″ Diminished Housing Detail A diminished housing offers a way to dress up your frame as well as take ...
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ASSY Screws in Steel to Wood Shear Connections Reprinted with permission of Max Closen, MyTiCon Timber Connectors, Vancouver, BC, Canada. -
ASSY Screws in Steel to Wood Tension Connections Reprinted with permission of Max Closen, MyTiCon Timber Connectors, Vancouver, BC, Canada. -
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Scissor Truss Timber frame scissor trusses do not have a horizontal chord. This gives the area ... -
Hammer Beam Truss Throughout history in both Europe and the United States, many cathedrals were designed with variations ...
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Jim Rogers: If you want to extend the roof decking past the ou...
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Jay: I am building my 2nd timber frame this coming wint...
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M Brice Cochran: This joinery detail came from Jim Rogers but I am ...
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John: Brice, Could you make a video/web page and show...
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Marcus Lewitzki: I love the detailed pictures you have on this site...
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