Driveway drain cover

MDY__________ · Dec 17, 2022

Oops. Look what my 680 did.
I need a new drain inspection cover to fit a 320mm square base.

For reasons I grasp only vaguely, the force exerted by a braking vehicle wheel is much greater than half the axle load. So I think I need something rated for 10T. Maybe more.
Anyone know for sure?

And if that's the case, I can't find anything suitable. Either the load capacity is too low or the footprint is too big.
Perhaps I need the whole thing, chamber and all, pulled up and replaced.

I can't avoid driving over the thing. It's in exactly the wrong place.

Has anyone solved a similar problem?

chockswahay · Dec 17, 2022

How about a (5mm?) 600 x 600 steel plate over that? Easy and cheap from a local metal worker.

Perfectos · Dec 17, 2022

That is a proprietary cover manufactured by Osma , available from builders merch or Wickes. You can get medium duty (12.5 tonne rating ) B125 rating

have a look at the Osma products or replace with similar either “poly pipe” or “Clark ”

shop around for best price

you will probably need to replace the frame if you choose to get a different make

edit: the standard one you have is rated to 1.5 tonne !

edit: no need to replace the chamber & base (if installed correctly) just make sure the new cover frame new is bedded into a strong concrete bed

edit: check the pipe diameter, it should be 100mm and the new frame should be suitable for the correct size pipe , the one below is representative , not a recommendation of a product.

300 X 300 X 70MM B125 COMPOSITE MANHOLE COVER and FRAME CD261/SF/10

B125 Solid Top Composite Manhole CoverIntegral Lifting Keyholes (To Suit CD 553 Or CD 553L Lifting Keys) Internal Dimensions 300 (L) x 300 (W) x 70 (D) External Dimensions 405.1 (L) x 405.1 (W) x 110 (D)Fully Galvanised

www.lbsbmonline.co.uk