It is often the case when you have two or more plates or beams coming together into a post to use spline joinery in place of a tenon. The thought process being, if you put a tenon on the end of both beams you risk taking too much “meat” out of the post that you create […]
As its name implies this tie beam to plate tying joint, unites a tie beam, plates, rafter and posts all in a compact structurally sound way. It utilizes a spline to tie the plates together and traditional mortise and tenon joinery to complete the rest of the joinery.
In a hexagonal timber frame where the plates around the perimeter join the with principal rafter is a bit tricky from a engineering stand point. This is just one solution and in this case a steel post was used instead of a timber post. After the last detail I thought a follow up to the […]
Here is an exploded view of a birds mouth rafter foot where it meets the plate. A typical timber frame joint where a rafter meets a plate is called a birds mouth and this is a great isometric rendering of this type of joinery.
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 […]
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 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 […]
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 […]
This is an exploded view of a post top tenon when the post is at the end of the plate. The tenon is 2″ off the side of the post and 2″ thick. The tenon is cut back 2″ from the face of the post so that there is some “relish” left on the end […]
Post Top Tenon in Middle of the Plate – This is an exploded view of the post’s top tenon where it meets the middle of the plate. As you can see the tenon is only reduced to 1/2″ under the full size of the post on one side as there is no need to leave […]
Often a spline is used in a timber frame to reduce the amount of wood that is taken from a post or beam, this particular connection detail has two knee braces flanking the spline.