structured panel for roofs floors ceilings foundations basement walls verandahs decks fences and interior and exterior walls in building construction the structural panel in accordance with the subject invention can be assembled without the use of discrete fasteners and is able to stand between frame members without the use of a solid substrate directing attention to fig1 and 2 a lath 10 is made up of a generally planar sheet 15 having a front side 17 and a back side 19 a plurality of ribs 20 are formed within the sheet 15 each rib 20 protrudes from the back side 19 of the sheet 15 furthermore each rib 20 has a profile with a first side 22 and a second side 24 which diverge from one another as they extend away from the back side 19 and then the first side 22 and the second side 24 converge to intersect each rib has a maximum height h which occurs at the place of maximum divergence of the first side 22 and the second side 24 each rib 20 may extend across the lath in an interrupted pattern such that each rib 20 is a plurality of protrusions a plurality of slats.