Removal

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Removal Detailed

Recess covers are best fitted after most of the surrounding paving is laid, but, in the case of block or brick paving, before final compaction. The paving should be temporarily stopped around 250mm from the manhole or inspection chamber (IC) to allow room to work and enable the paving to be 'pieced-in' accurately once the cover is fitted.


Leaving the existing cover in place, to prevent spoil falling into the drain, dig out all the way around the IC about 250mm wide, and approximately 100mm deeper than the bedding layer level.

Design Load Definitions

Pedestrian

Pedestrian Loading: Covers designed for pedestrian loading utilizing a 300 lbs./sq. ft. uniform live load.


Incidental H-20

Incidental H-20 Traffic Loading: Covers designed for traffic conditions utilizing a 16,000 lb. dual wheel load without allowance for impact. These covers should not be used in areas of high density, high speed, or high impact traffic.


Full Traffic Loading H-20

H-20 Full Traffic Loading: Covers designed for high density traffic conditions utilizing a 16,000 lb. dual wheel load with a 30 percent increase for impact.