24 a joist header 26 and outer sheathing 28 the wall 18 typically supports a roof structure 30 or an upper level not shown the scaffold 10 is specifically devised to vertically hang from the cap 22 on header 26 and to transversely abut against either the studs 20 or the sheathing 28 the hanging frame 12 has a top hook 32 having an outward facing abutment 34 that goes over the top of and hooks against the backside or inside of either the cap 22 or header 26 to provide complete vertical support of the scaffold 10 and all work loads thereon extending downward from the hook 32 is a generally upright first hanger member 36 also in tension in a simplified and least costly embodiment of the scaffold 10 the first and second hanger members 36 38 are welded or otherwise rigidly fastened directly to the work frame 14 the work frame 14 has an upper generally horizontal work rung 40 a lower bumper rung 42 and a plurality of ladder rungs 44 46 48 all of which are integrally held together and vertical supported and fixed by a pair of spaced apart inner and outer ladder uprights 50 52 the work rung 40 has an outboard rung 54 that extends outwardly beyond the outer ladder upright 52 for support of one end of a horizontal walkway plank 56 in normal use there are at least a pair of the scaffolds 10 on each wall 18 with the scaffolds 10 being spaced from each other to support each end of the plank 56 the entire ladder componentry 44 46 48 50 52 is spaced outboard from inner.