This mortise and tenon joint uses a wedge in conjunction with a tapered tenon and mortise to hold itself together giving you a clean looking connection. The key in this joints strength is to have all the bearing surfaces between the post, wedge and tenon fit perfectly. The wedge’s large face faces outwards towards the housing […]
Timber Frame Joints
Often we find ourselves with a large amount of tension in some connections involving the roof loads and it is necessary to add some steel instead of relying on wooden pegs to do the job. This is not just a new age practice but one that has been around for a long time. An easy […]
This strong and simple to cut joint joins a rafter to a tie beam in a wide variety of truss combinations. The notch is what creates the strength in this connection. It uses the roof pitch on the inside edge and a 45 degree angle on the outside of the notch.
A scarf joint is used to create longer timbers for use in plates, beams, rafters and posts when you cannot find a long enough timber to span the distance you require. The stop splayed scarf that is displayed here is extremely common and can be fastened together with pegs, all-thread with nuts and washers or […]
While joining a strut from a king post or bottom chord is a simple timber frame joint to cut it is important to look at the connection details. Here we use a 3/4″ housing, and because we are using white oak a 1 1/2″ tenon and two 1″ pegs to tie everything together.
A classic joint for a king post to rafter connection using a 1 1/2″diminished housing and because it is designed for oak a 1 1/2″ tenon. As always make sure you check with a qualified engineer before you begin cutting joinery on your frame.
While this fully housed joint does not have the dramatic affect that a diminished housing. It offers a simpler look that offers a more traditional look and feel. It is the style I chose for my home and have no regrets.
Every timber gets its name from where it is in the frame. This beam is between two posts. It holds them apart from the rafters pushing them in. It is called a “Straining Beam”. Here is an exploded view of one. Sometimes they have braces, sometimes they don’t. Usually it has a standard tenon on […]
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 […]
This is an exploded view of a tongue and blind mortise at the ridge. The rafters are again 4×6 at 12/12 pitch with a 1 1/2″ tenon and mortise with a 3/4″ peg. The mortise doesn’t go all the way through the rafter and it doesn’t go all the way to the top end. This […]