A classic joint for a king post to rafter connection uses a 1 1/2″diminished housing, and because it is designed for oak it uses a 1 1/2″ tenon. This upper king post joinery is a classic and robust connection. As always, […]
Upper King Post Joinery Detail Read More »
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″
Collar Beam Timber Detail Read More »
Here is an exploded view of a pair of purlin joints where they meet the rafter. An experienced timber framing engineer should review each frame design for the exact design of this joint.Loads, spans, type of wood, and possibly other factors
Purlin Joints at Rafter Read More »
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
Birds Mouth at Timber Frame Rafter Foot Read More »
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″
Half Lap Timber Frame Rafters at Ridge Read More »
A butt joint is one of the simplest ways to join two rafters together at the peak and is just one of the timber frame joints that we have on our site. This is the most basic way, which is
Rafters at Ridge – Butt Joint Read More »
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
Timber Frame Rafter Seat Housing Joinery Read More »
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
Step Lap Rafter Seat on Timber Frame Plate Read More »