Abstract: An improvement in corrugated structural panels, useful in the construction of tunnels, shoring, and other pressure bearing or containing structures, wherein the improvement comprises the utilization of a prism element transverse to the longitudinal axis of the corrugation in the design of the end sections of each corrugation within the panel thereby providing means to collect shear, bending and axial stresses from the corrugated panel and transmit them to the panel's supporting edge.