1. Design Codes (latest edition unless noted)
a. The 1988 Uniform Building Code as adopted by the Minnesota State Building Code.
b. National Design Specification for Stress Grade Lumber and its fastenings by the National Forest Product Associations.
2. Design Stress
a. Sawn lumber (all values for single member; use under normal load conditions)
Provide Treated Ponderosa Pine No. 2 or better:
Flo = 850 psi
Fv = 70 psi
E = 1,100,000 psi
Fc = 700 psi (parallel to grain)
Fc = 535 psi (perpendicular to grain)
3. Design Live Loads.
a. Ramp - 60 psf.
4. Dimension Lumber
a. All member sizes given in the drawings are nominal dimensions.
b. Where posts are called out, headers shall bear fully on posts.
c. All beams and joists not bearing on supporting members shall be framed with "Simpson Strong-Tie" joist hangers or equal. Use type "U" (or equal) for single 2x's and type "UTF" for trusses where required. The joist hangers shall be nailed using special nails supplied by the hanger manufacturer.
d. Wood headers or posts made up of 2 or more 2x's shall be spiked together.