Mortise and Tenon Calculator
Joint dimensions, peg sizing, and shear capacity from timber size and load using traditional timber framing rules.
Inputs
in
in
in
lbs
Results
Tenon thickness
2.5 in
Tenon width
6 in
Tenon length6 in
Mortise depth6.25 in
Mortise wall thickness2.75 in
Shoulder depth1 in
Peg diameter0.88 in
Minimum relish1.75 in
Draw-bore offset0.06 in
Tenon shear capacity12,960 lbs
Shear utilization ratio0.15
How to Use This Calculator
- Enter Tenon timber width, Tenon timber depth, and Mortise timber width.
- Set Applied joint load and Wood species.
- Review Tenon thickness (in) and Tenon width (in).
- Use Tenon length (in) and Mortise depth (in) to inform your decision.
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