Abstract: A more versatile pocket coil mattress provides increased support in the perimeter side regions of the mattress in combination with increased support in the main sleeping area. The shape, preloading and characteristics of the pocket coil springs has changed to decrease compression per unit of force applied while still maintaining the desired user response of a pocket coiled mattress.

Abstract: A liquid containment wall for a tank is formed by corrugated panels connected end to end and supported by upstanding brackets at spaced positions around the peripheral wall and a liner attached to the wall. Each panel has at each end an overlapping section with an array of aligned holes. The holes are connected by connector plates shaped and arranged to overlie a part of the array. Each plate has a plurality of shear pegs extending at right angles and at least one hole therethrough to receive a threaded bolt so that the bolt passes through a respective one of the aligned holes of the array to clamp the plate against the overlapping panels.

Abstract: A liquid containment wall for a tank is formed by corrugated panels connected end to end and supported by upstanding brackets at spaced positions around the peripheral wall and a liner attached to the wall. Each panel has at each end an overlapping section with an array of aligned holes. The holes are connected by connector plates shaped and arranged to overlie a part of the array. Each plate has a plurality of shear pegs extending at right angles and at least one hole therethrough to receive a threaded bolt so that the bolt passes through a respective one of the aligned holes of the array to clamp the plate against the overlapping panels.