alternatively the second side 9 could be shortened to be of length u201c h u201d thereby dispensing with the need to have an opening 10 in the second side 9 as shown the join allows for two horizontal scaffold members 52 and 49 to be positioned at the join in a substantially right angle relationship with one member crossing under or over the other member this arrangement helps the join resist rotation about either horizontal scaffold member 52 or 49 obviously the join in fig3 could be employed with the first side 5 facing the interior or the exterior of a scaffold frame instead of a clamp the first side 15 could be constructed similarly to that shown for the second side 9 that is the first side 15 and second side could be substantially identical u2014 a downwardly projecting plate with an opening therein to accommodate a horizontal scaffold member the opening could be completely enclosed as shown in fig2 or the opening could be partially enclosed as shown in fig2 a this opening forms the attachment means for a horizontal scaffold member while such a design resists rotation about the two axis that align with the horizontal scaffold members this embodiment does not resist translational movement or the sliding of horizontal member 52 along its length and hence is not preferred positioned on the top side 11 of the join 1 is an upstanding vertical stub 7 vertical stub 7 is sized to allow a vertical scaffold member to slide over the stub to thereby create an intermediate vertical horizontal scaffold member which is rotationally stable obviously the stub could be sized to allow a vertical scaffold member to be inserted into the stub as shown a vertical.