Abstract: A pressure relief wall assembly has a wall panel, one end of which is permanently secured to a frame. A plurality of elements secure a second end of the wall panel to the frame, and these elements fail when an excess pressure is applied to the wall panel. A retaining member is provided so that, when excess pressure is applied to one of the two sides of the wall panel, the second end of the wall panel is retained until a further increase of pressure occurs. The retaining member then releases the second end of the wall panel. This enables the wall assembly to be designed for different release pressures in blow-in and blow-out modes, so that no excess load is applied to a support frame in either mode.

Abstract: A panel and gutter assembly includes a number of panels and gutters, each of which is located between two adjacent panels. Each gutter is generally U-shaped and is open along the top to collect water. Edge portions of the panels overlap the gutters, so that water overflowing from the panels will run into the gutters. A plurality of clips are provided for securing the gutters to the panels, and a batten member is provided covering a gutter.