notched oblique thrust joint with right angled end

The notched oblique thrust joint with right angled end is a T-connection between inclined compression members and horizontal support beams. The connection transfers compression forces through a perpendicular end face and horizontally acting shear surface in the front wood area. It functions without additional wooden fasteners.
This joint belongs to the group of notched connections and shows similarities with the angle-bisecting thrust joint and other oblique connections. Comparable principles can be found in stepped connections with oblique tenons and European brace-to-post connections.
The inclined compression member is worked with a perpendicular end face and a horizontal front wood area. The end face transfers the main compression force, while the front wood takes up the horizontal forces. The notch depth typically amounts to one-sixth to one-quarter of the beam thickness. The perpendicular execution simplifies machining compared to the angle-bisecting variant.
The perpendicular end face enables simple and precise machining with standard tools. Load transfer occurs over the surface area of the end face, allowing high compression loads to be transmitted. The front wood length must be at least 200 mm or eight times the notch depth to ensure sufficient shear strength.
Traditionally, this joint is used for bracing, wind braces, and rafters in roof constructions as well as wall bracing. Typical applications are rafter roofs, collar beam roofs, and timber frame constructions where inclined compression members must be connected to sill plates or wall plates.
Manufacturing involves perpendicular sawing of the end face and horizontal cutting of the front wood area. A nail serves for positional security and is executed with at least four times the diameter as penetration depth. Tolerances must be kept minimal to ensure optimal load transfer.