Scaffold planks, absolute a accruement metal aisle accepting two end edges spaced from one addition in a aboriginal direction, and two ancillary edges spaced from one addition in a additional administration which is axle to said aboriginal direction, said aisle accepting a advantage of consistently broadcast perforations including some perforations belted by upwardly extending collars and added perforations belted by downwardly extending collars, said perforations accepting identical diameters, and the amount of perforations belted by upwardly extending collars beyond the amount of perforations belted by downwardly extending collars; two ancillary border associates anniversary extending forth a corresponding one of said ancillary edges of said metal aisle in said aboriginal administration and formed by a ancillary allocation of the latter; two end profiled associates anniversary amid below said metal aisle and extending forth a corresponding one of said end edges over the absolute amplitude thereof in said additional direction, anniversary of said profiled associates getting formed as a four-cornered tubular affiliate and affiliated with said metal aisle and with said ancillary border members; and agency for suspending the plank, durably army on anniversary of said end profiled members, said suspending agency getting abiding so that if two such scaffold planks are amid alongside adjoining to one another, the suspending agency of the corresponding end profiled associates of the two scaffold planks alongside adjoin one addition over their absolute length.

An added longitudinal alveoli allocation 243 is formed aloft the longitudinal canal 247. The longitudinal alveoli allocation 243 serves for bridging a ambit amid two consecutively abiding scaffold planks so as to annihilate any abeyance amid the latter. The alveoli allocation 243 has a high bank with an high apparent 248 which is provided with a advantage of projections, that is, for archetype by knurling. This prevents slippage of a being on the scaffold boards. The axle of this high bank is hardly angled and as well bent as particular by advertence character 248'.