Abstract: A building construction comprising a plurality of panels. Each panel comprises spaced sheets and a plurality of spaced longitudinally extending truss members. Each truss member comprises a pair of channels and an undulating member comprising alternating first and second apices connected by legs, the apices being bonded to the channels. At least one of the sheets has longitudinally extending grooves receiving the truss members. The grooves have a cross sectional configuration conforming to the cross sectional configuration of the channel of the truss member. The channels are fastened to the sheet. The panels may be used in the side wall or roof of a building.

Abstract: A building construction comprising a plurality of spaced parallel structural beams supported on columns. Trusses extend between the beams and layers of roofing material are applied over the beams and the trusses to define a duct at each beam through which air can pass and in which utilities and other service lines are located.

Abstract: A building construction comprising at least one longitudinally extending beam, a plurality of spaced parallel beams extending transversely of and fastened to said longitudinally extending beam, and a plurality of panels extending between adjacent transverse beams in side-by-side relationship. Means are associated with at least one of the transverse beams and define a duct for the passage of air. The panels have openings therethrough communicating with the duct such that air passing through said duct may pass downwardly and inwardly to the interior of the building.

Abstract: A food processing system wherein food is successively treated by washing, blanching, and is thereafter canned and the cans are subjected to retorting, wherein the water, fuel and electrical energy utilized are conserved by efficient utilization thereof.