Large manhole cover

[thebadger7]

Hi all
I have a large 900x600cm inspection chamber that I need to get a cover for. It's in the garden so no heavy loads.

900x600 covers are very expensive - is there any good reason not to use two 600x450 covers next to eachother?

Thanks

 

[Murdochcat]

I would strongly suggest you buy the correct cover …….

 

[thebadger7]

For what reason? Visually, or strength?

 

[thebadger7]

The 900x600 are £200-300 which is a lot for something that's in the corner of the garden, and will never have any traffic over it. Maybe a couple of concrete slabs would be a better option

 

[stevie888]

What is the purpose of the chamber and whose responsibility is it?

 

[thebadger7]

It's just an inspection chamber for the foul waste drain before it leaves my land - my responsibility. It's an old Victorian trap - can get blocked from time to time. Previously had been buried, so have kept open for future access. About 80cm deep.

 

[Hugh Jaleak]

I'd look at reducing the opening with a slab, then fit a smaller cover.

 

[Alec_t]

Maybe a couple of concrete slabs would be a better option

Should be ok. Might need something (membrane, goo, soil layer?) to seal against nasty smells.

 

[stevie888]

As Hugh says you could cast a slab over it with a standard hole but I think I would simply stick a bit of PSC lintel across the middle and a course or bricks rould the perimeter then put 2 standard c&fs side by side.

Alternately you could bed a few bits of lintel to close half the hole and just have 1 cover (probably the easiest option)

 

[scbk]

If you weren't having to open it regularly, a 3x2 paving slab would be fine