Mortise And Tenon Roof Rafter Joint

Wedged anchorbeam tenon joinery.

Mortise and tenon roof rafter joint.

In addition we use 4x10 timber rafters for an extra strong roof system. The principal rafter is jointed to the tie beam by a bridle joint. We decided to cut some timber frame beams and build a new base for it with mortise tenon joints. Shouldered mortise and tenon joint below right.

With mortise tenon joinery the mortise pocket accepts the tenon tongue and is secured with an oak peg. Beveled an attractive and efficient joint that can be used on the main posts and elsewhere throughout the frame. The joint is further strengthened by a wrought iron strap. This will become the shoulder where the tenon starts.

Shouldered mortise tenon. This joint is the work horse of a timber frame. Mortise tenon is the fundamental joint in all timber framing. This image shows one way collar ties can be connected to rafters using traditional mortise and tenon cuts and hardwood pegs.

The standard size of this rafter is 10 x 15 cm but it varies in using. Other joinery is generally a variation of the mortise tenon. Square this joint is slightly stronger in that it can resist upwards cantilever type thrust sometimes created by a knee brace between the joint and a strong. Step 1 measure mark the tenon.

Lean to rafters 43 l mortise 26 lookout 41 moment 46 47 mortise and tenon 14 necked tying joint 6 outriggers 17 43 packing piece 31 paired tenons 26 paired through mortise and tenon 4 passing brace 33 peak joint 38 pentice roof 43 44 plank sill 22 principal rafter common purlin roof 41 45. Start by measuring and marking a line all the way around the beam for how long you want the tenon to be.