These are 600 x 600 mm and 600 x 450 mm clear opening sizes. The covers and frames are designed to withstand light vehicle traffic loads typical to those conditions.
The lids or covers are equipped with two lifting slots and a galvanized steel rim lining to protect it against wear and tear. The top surface has a pleasing easy-clean non-slip texture. Frames have a smooth concrete finish.
Vanstone precast concrete manhole covers and frames may be used on top of any type of manhole wall to effect a surface closing hatch. They may be used for either newly built or existing manholes.
For further information refer to the Vanstone download to SPECXpert 2008/2009 or find out more about Vanstone’s manholes here |