Determine the LRFD nominal and adjusted design values and adjusted design resistances for the following members and loading conditions. All members are Select Structural Southern Pine and are fully braced to prevent lateral-torsional buckling. Bending occurs about the strong axis.
a. Roof joists are 2 x 6 at 24 in. o.c. which directly support the roof sheathing Loads are 1.2D + 1.6S.
b. A 4 × 12 that supports 1.2D + 1.6L + 0.5L, with L f
C. Purlins in a roof are 2 × 10 at 4 ft . Loads are 1.2D + 1.6L,
d. Floor beams are 4 × 10 at 4 ft oc. Loads are 1.2D + 1.6W + L. rom occupancy.