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This week we will test a variety of wood connections. These are related to shear flow but approach it from a different angle than IDE 110. The tests are:
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Wood Notes
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 photo by Jeff Thomas, 2006 |
Wood Connections
This week we will test a variety of wood connections. These are related to shear flow but approach it from a different angle than IDE 110. The tests are:
- Tension of plate-connector joints. We compare different mending plates on pine splices.
- Dowel bearing. We compare how holes in pine resist a 3/4" bolt pushed in axial and transverse directions.
- Fastener withdrawal. You will choose a fastener, drive it in pine, and then see how much force it takes to withdraw it.
- Janka hardness. This isn't a connection test but gives you experience with other types of wood. We will compare the hardness of cedar, poplar, fir, pine, oak and composite decking.
Wood Notes
Connection Notes
- Wood Basics
- Tree Shapes
- Cell Structure
- Wood Grain
- Saw Patterns
- Grades of Lumber
- Test Methods
- ASTM Standards
- Failure Characteristics
- Property Comparison
- Property References
- References
- Wood Connections
- Bone Implant Systems
- Shear Stress: video, html
- Bearing Stress: video, html
- Stress Concentrations: video, html
photo by Jeff Thomas, 2006