Profile: Rota Design Ltd. is offer services like computer aided design, engineering design , rotational moulding design, 3D laser scanning product and materials testing process. In our rotational moulding design the walls are subject to compression forces from the earth surrounding the chamber which increases with depth. Ground water conditions impose a potential for crushing the chamber and may add buoyancy. The dead load of the overfill and any vehicular load or other imposed stresses act upon the chamber. The chamber may contain liquid or be subject to hydraulic or pneumatic internal pressure.