Paving slab shoved on top of manhole

[markyyyyyy]

Hi

Just removing my paving to find that the previous house owners shoved a 600 x 600 x 50MM paving slab on top of the manhole. Not cemented down or anything.

This has been fine, and safe to walk on.

I am redoing my patio and have bought a 600x600x35MM paving slab to replace the one already there (due to wanting a different colour).

Will the thickness of this slab be okay, baring in mind that it will have people walking on it quite often. Is a 35mm slab strong enough to hold up to 100kg? It is resting on the sides of the manhole (approx 4cm each side)

Thanks

 

[kbdiy]

So no manhole cover? Personally I'd want a proper cover on there before hiding it with a slab, regardless of thickness.

Then again, I wouldn't want to hide it at all so I, and anyone else, knew where it was in the event of a drain problem.