Underground container with inspection shaft - has top recess for frame for cover allowing height adjustment

摘要

The underground container, e.g. light liquid separation storage basin, has an inspection hardening shaft, extending to the road surface. The top of this is formed as a cover with frame. The ceiling (1) of the container (2) has a recess (13,14) for the frame (5,6) of the cover (9,10). This is of sufficient depth, to accommodate the frame over its complete height. The recess is stepped downwards and there is a circumferential gap of mib. 2cm between frame and recess. USE/ADVANTAGE - Shaft cover for underground container can easily be adapted to any level.