High strength wall structure with sill and header members

Claim 1

A rigid wall structure comprising at least one sheet metal panel having a profile of raised and valley portions extending the distance between two opposed ends of the panel, elongated sill and header members each having a first wall portion disposed in respective engagement with the opposed ends of said panel, and a second integral, wall portion provided with a profile of tongues and notches corresponding to the valleys and raised portions of said panel, said tongues and notches being disposed in mating engagement with the valley and raised portions of said panel on one side thereof, said sill and header members further each having a flange portion located opposite said second wall portion, and extending lengthwise of the members and in a direction toward each other when said members are disposed to engage the ends of said panel, an elongated clamping member for each of said sill and header members, each of said clamping members having a profile of tongues and notches disposed in mating engagement with the valley and raised portions of said panel on the side thereof opposite the second wall portions of said sill and header members, each of said clamping members having further an integral flange portion extending lengthwise thereof, and disposed in locking engagement with, respectively, the flange portions of said sill and header members, said panel further having on at least one side thereof at least one row of tabs extending from the surface of the panel and located between both ends of the panel and the location at which the tongues and slotted portions of the sill, header and clamping members engage the sides of said panel, and means for securing each of said clamping members respectively to said sill and header members in locking engagement with said panel.