The Brew Cabin

Posted: **Sun Jul 29, 2012 3:40 pm**

Hi,

I cannot find any advice on the following issue.

I had the drive (140 m2) surface skimmed and 150mm DOT1 laid 2 years ago - to see what level of movement the cars produced. I got about 30mm rutting and tidal waves of DOT1 so I want to use cellular system.

Problem is the ground worker left the DOT1 at 150mm below the DPC with a fall away from the house.

It appears that I could set the drive to 75 mm below DPC if it has a gravel finish next to the wall.

Does this apply for a cellular system - its all gravel finish, sloping away from the house, fully drained by existing functional soakaways?

Cheers

Earl_H

Posted: **Sun Jul 29, 2012 4:56 pm**

you only want about 30 or so mm of gravel earl
what you have suggested sounds fine

LLL

Posted: **Sun Jul 29, 2012 5:01 pm**

Hi LLL

My post may have not been clear

Can I let the gravel surface get to 75mm below the DPC or do you propose 30mm below the DPC?

Cheers

Earl_H

Posted: **Sun Jul 29, 2012 7:31 pm**

our BCO will let 100mm go if it slopes away
plus with gravel you get less splash anyway
cheers LLL

Posted: **Sun Jul 29, 2012 9:31 pm**

you only need 30mm OF GRAVEL, meaning if it was left 150mm short of dpc you will only 120mm below

Posted: **Mon Jul 30, 2012 5:50 pm**

Thanks Guys

The top of the MOT is 150mm from the DPC & the cell structure uses 35mm sharp sand and then 40mm for the cells (which are gravel filled) so I'm 25mm high.

I'll dig out and drop the level - doing the proper job.

???

Thanks again

Earl_H

The Brew Cabin

Cellular gravel drive - Cellular drive