For the floor framing of Problem, select 2-in.-thick (S4S) redwood planks for the header....

For the floor framing of Problem, select 2-in.-thick (S4S) redwood planks for the header. Multiple planks may be used. In addition to the floor load, the header must support a wall weight of 50 lb/ft and a total load from the roof of 300 lb/ft. Use a design span of 8′?0″.

Problem

A partial plan view for a residential floor is shown. Select the joists. Use 2-in.-thick (S4S) hem-fir joists. Assume 16-in. spacing. Live load = 40 psf. Dead load = 12 psf (excluding the joist weight).