Using the floor-framing plan that shows the size, direction, and spacing of the joists, You are required to determine the total number of joists required for the floor-framing plan in this drawing, and then compute its board feet measure. The joists are made of 2 x 12 lumber and spaced 16 in. on center. DOUBLE JOIST UNDER WALL AREA 2 -DOUBLE JOBST INDER WALL -242 JOIST HEADER DOUBLE JOST UNDER WALL AREA 1 242 305 e 16 Oc POUBLE JOSE 19 ft 20212 JOCK 66 HEADER POUSE JOS 44 ft 28 ft AREA 3 14 ft 242 325T HEADER 17 ft