3314.5.2 Maximum span for wood plank.
BC § 3314.5.2
All lumber used in scaffolds or their supports shall be at least equal in strength and quality to construction grade lumber in accordance with Section 2301. See Table 3314.5.2 for the maximum span for scaffold planks. Table 3314.5.2Maximum Permissible Spans for 2-Inch Plank Used on Scaffolds Material Full Thickness Undressed LumberLumber of Nominal ThicknessWorking Load (psf)25 50 75 25 50 75 Permissible Span (ft)10 8 6 8 6 5 For SI: 1 inch = 25.4 mm, 1 pound per square foot = 47.88 Pa, 1 foot = 304.8 mm.













