Fixed, floating and telescopic covers made of ductile and gray iron for concrete manholes.

Fixed covers
Set/placed directly on the manhole/pass part. The coating is applied around the entire cover and then compacted well. When the installation is complete, the cover must “lie” 5-lOmm below the other existing road. Only suitable for low loads.

Floating
The well should be constructed in such a way that it is possible to use the cover’s adjustment range both upwards and downwards. The telescopic top frame should “float/hang” in min. lOOmm of asphalt. The cover should be rolled in the hot asphalt and packed well. The asphalt should be in full contact with the entire cover frame. When the installation is complete, the cover should “lie” at the same level as the rest of the existing road. The upper frame should float/hang in the asphalt, NOT in the lower frame.

Telescopic
The well should be constructed so that the cover can be adjusted both upwards and downwards. Variable covers should “float/hang” in min. lOOmm of asphalt. The cover should be rolled in the hot asphalt and packed well. The asphalt should have full contact around the entire frame of the cover. When installation is complete, the cover should be “level” with the rest of the existing road.