The Brew Cabin

Posted: **Sun Oct 03, 2010 12:04 pm**

Hi guys,

I imagine you have hundreds of people posting now the rain has come and I am not one to buck the trend

I was hoping I might be able to crib some more advice

Basically we have a block paved section of our garden which slopes towards the house. It is only a small section approx 1 meter wide by 3 meters long in total. The rest is drained off fine but this bit needs to slope towards the house as it provides sloped access to the rear of the house.

However we have always had a slight problem with puddling (Around 1-1.5 inch of water) near the bottom of this section and it's driving me mad!

Which way do you guys think would be the best way to disperse this water?

The pipe you see against the wall is a soil pipe. The house we live was I believe made around the 1930's and we did not have a man hole cover of sorts when we moved in (We have since fitted one as part of the extension works) My initial thoughts were to drain the surface water into the soil pipe using some sort of P trap.

However the complication is that the soil pipe is only around 20-35 cm from the surface where the water is pooling so not much space to work with, and, if possible I'd like to avoid fiddling with the soil pipe.

I did think of a soakaway but then it's very near the house ...

Or another thought was dig up the bottom bit in the pic and put in permeable paving but then I suppose there are not gurantees than this would absorb all the water (Although the water does diserpate quite quickly when the rain stops)

Any help you guys could offer would be great

- Jamie

Posted: **Sun Oct 03, 2010 12:39 pm**

I would take up the where the water lays take out the sand and and sub base, replace with 6ml grit then replace blocks with a big enough gap to take 2/4ml grit. You would have to put in some terran to separate the sand on the main body from the new permeable part. For what it is i would'nt mess with the foul pipe either.

Posted: **Sun Oct 03, 2010 12:44 pm**

that or a linear channel drain in an L next to the wall or where the soldier course is in a straight run connected through a trap into the soil pipe

Posted: **Sun Oct 03, 2010 12:54 pm**

Hi guys thanks for the replies. I'm tempted to go with the first option as it involves the least amount of risk in terms of me messing with the soil pipe. Just so I have this right, rip up all of the pavers, dig out, fill with 6mm grit, I assume compact (?) as normal? then some sort of material to seperate the 6mm from the sand?

Then lay down the sand and joint as normal?

Next question what sort of bedding sand? The same as you would use for the permeable pavers etc? Also excuse my stupidity but what do you mean by terran?

Cheers all,

- Jamie

Posted: **Sun Oct 03, 2010 1:27 pm**

can you not just lift up the paving so that the water falls down your side alley?
it looks to me that who ever did this made a flat section to allow the gate to open
LLL

Posted: **Sun Oct 03, 2010 1:33 pm**

Probs wrote:Hi guys thanks for the replies. I'm tempted to go with the first option as it involves the least amount of risk in terms of me messing with the soil pipe. Just so I have this right, rip up all of the pavers, dig out, fill with 6mm grit, I assume compact (?) as normal? then some sort of material to seperate the 6mm from the sand?

Then lay down the sand and joint as normal?

Next question what sort of bedding sand? The same as you would use for the permeable pavers etc? Also excuse my stupidity but what do you mean by terran?

Cheers all,

- Jamie

I agree giles that is an option but it still has to drain. Probs, the 6 ml grit will be instead of the sand, in effect it will be your bedding layer. The 2 / 4ml grit will be for jointing. sorry if i did'nt make that clear. terran is a geofabric you can get from a bc. Don't use weed fabric. By the way your not "stupid" m8, ask away, that's what we are here for :;):

Posted: **Sun Oct 03, 2010 3:06 pm**

Hi all,

LLL, Yes thats correct it does give some clearence for the gate to open but is also required as we quite regually use the side entrace for bikes and access etc. It would take an age to drain down the entrace but I do see your point.

Sean: Cheers for the clarification, so rip up the sand bedding layer and replace with 6ml grit. Does it need to be compacted as per the previous sand bedding layer? I take it I can leave the hardcore underneath in tact?

Sorry for all the questions and cheers in advance!

- Jamie

Posted: **Sun Oct 03, 2010 7:25 pm**

Just needs a hand tamp.

Posted: **Sun Oct 03, 2010 9:56 pm**

cut an inch off the gate. lay the block with a slope from house to gate. doesn't need to be much of a slope 1:60. won't effect getting things in and out.

The Brew Cabin

Draining block paving: help!