There are a few ways to join two rafters together at the peak, one way that we have illustrated before is the tongue and fork connection. In this detail a simple rafter to rafter mortise and tenon connection is used […]
Rafter to Rafter Mortise and Tenon Connection Read More »
This rafter to tie beam connection, strong and simple to cut, 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
Rafter to Tie Beam Connection Read More »
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
Hexagonal Frame Plate to Rafter Connection Read More »
While joining a strut from a king post or bottom chord is a simple timber frame joint to cut, it is essential to look at the connection details. In this upper king post strut to rafter detail, we use a 3/4″
Upper King Post Strut to Rafter 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 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
Rafters at Ridge Tongue and Blind Mortise 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 »