Drainage from Garden office.

Joined
7 Jan 2008
Messages
73
Reaction score
0
Location
Oxford
Country
United Kingdom
(Also posted in Plumbing... but probably more suitable here in Building)

I'm constructing a garden office and would appreciate a little advice on spec for a waste pipe from the installation to the nearest foul junction. The junction is on my property and about 20m from the location (straight line, no bends needed in the run).

There's a nice gentle incline down from the office. I'd say ground level is about 1-1.5m higher at the office to where the junction is.

I'm hoping to have a single toilet, hand-washing basin and small sink for washing up coffee mugs. Not expecting a massive load on the system.

So, questions:
- Pipe diameter? 110mm?
- Depth of pipe?
- Is the incline enough to allow for the drainage to work with just the pipe?
- Is it worth diverting part or all of the gutter drainage through this to help keep things flushed through and clean (roof area ~36sqm).

I'm hoping to avoid needing a macerator in the toilet.

Cheers all.
 
Sponsored Links
So, questions:
- Pipe diameter? 110mm?
- Depth of pipe?
- Is the incline enough to allow for the drainage to work with just the pipe?
- Is it worth diverting part or all of the gutter drainage through this to help keep things flushed through and clean (roof area ~36sqm).

Pipe diameter correct - 110mm.

You are advised to have a minimum of 300mm cover.

A 20m run of pipe at recommended fall (1:40) would require a fall of 500mm so you have plenty of depth to work with.

The gutter should ideally have its own storm soakaway. However, there have been more than one occasion where i have been to blocked drains where the homeowner has recently returned from a holiday. I guess this is down to poorly laid drains, having a build up of silt that has crusted whist the drain has been dry.
Probably.

A well laid plastic drain with adequate fall will not need to be kept flushed.
 
Sponsored Links
good drainage is the foundation to your landscape. It's one of the first issues I tackle when planning a new yard and garden
 

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.


Are you a trade or supplier? You can create your listing free at DIYnot Local

 
Back
Top