Hi All
I am going to be laying a new drive in place of the existing gravel/dirt drive. There is already some drains there laid by the original builders. I will be connecting to these for one extra drain.
Now I may have missed something already on the site, but can anyone tell me if there is a minimum depth under the base layer or bedding layer that the drains should be? Should I haunch concrete over the new/existing pipes? What is the effect of compaction of the base layer on these pipes?
Help?!
Mike
Drains under drive
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Tony McC
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The recommended minimum cover beneath a driveway is 900mm ( see Drainage Section).
However, if you use clayware, you could get away with 600mm as long as the bedding and surround are absolutely spot on (Class B). The 'correct' methodology is to use a cover slab over the pipes, but it all gets to be alittle bit OTT for a residential driveway.
However, if you use clayware, you could get away with 600mm as long as the bedding and surround are absolutely spot on (Class B). The 'correct' methodology is to use a cover slab over the pipes, but it all gets to be alittle bit OTT for a residential driveway.
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LuckyPants
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Thats almost 3 foot! (1m). However that is moot now as I am using one of these dished chanels to take the water over the surface to the existing drain. Fall is not a problem!
One question though. After excavating the big hole to put my drive in, I find the builders of my new garage (2 years ago) have put in a soakaway under my drive and the drains from the garage run under the drive (old gravel thing) and they are only 50 - 100 mm under the current surface and will be only 75-150 under the new drive. They seem fine with no damage from cars being parked on them for 2 years, but is this likely to be a problem in the long run?
One question though. After excavating the big hole to put my drive in, I find the builders of my new garage (2 years ago) have put in a soakaway under my drive and the drains from the garage run under the drive (old gravel thing) and they are only 50 - 100 mm under the current surface and will be only 75-150 under the new drive. They seem fine with no damage from cars being parked on them for 2 years, but is this likely to be a problem in the long run?
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Tony McC
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LuckyPants
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UMmmmm....? Big hole with rocks in? I honestly do not know, since I was not there when the work was done and did not know it was there. I naively thought they would connect to existing SW drains, especially as there was one very handy to the garage.
The soakaway takes the roof water from my garage, roof area about 80 sq meters. Please dont tell me this is going to cause me problems.......................
The soakaway takes the roof water from my garage, roof area about 80 sq meters. Please dont tell me this is going to cause me problems.......................
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Tony McC
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LuckyPants
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- Joined: Tue May 13, 2003 3:32 pm
- Location: North Wales