Frame for accommodating and locating grid or cover for tree root structure

摘要

The vertical arm of the frame acts as an outer limiting surface (6). The frame components (1) are joined together by an interengaging system of tabs (2) and grooves (3) in the locating or outer limiting area and secured in the appropriate positions by screws. The frame components have an angled, straight or curved shape. In the locating surface of the frame components adjacent, inwardly sloping inclined surfaces (7) are formed. The frame components are made of cast iron and have on their under side a cassette shaped profile with reinforcement ribs.