Truss Secured with Wood Dowel Pins
A carpenter is using wood dowels to secure
three wood members to form a truss. The truss will span 6 ft and must
hold a snow load of 50 lb/ft2. The dowels will experience a shear stress and the
dowels will push against the truss member causing a bearing stress.
What is known:
- Each truss member is a 1x2 wood board (nominal size 1" x 2"). Actual dimensions
are 3/4 inch by 1 1/2 inch.
- Trusses are spaced every 2 ft along the roof.
- The dowel is made from Douglas Fir wood and has a diameter of 1/2 inch.
- Wood dowel is centered on the wood truss members.