Thames Water build over agreement for 823mm pipe

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An 823mm pipe, 300mm below ground. Are you sure? What material is it made of? (Concrete) Where is the nearest access? (half a mile away)
Yes. its 300 below ground . The nearest manhole is 6 feet in the adjoining council land. Its made out of concrete. When we opened the manhole we saw clear water - so its likely to be surface rainwater and there was no foul smell at all.
 
It's all a bit odd, I daresay something has been lost in translation ....
Layout is attached. The green arrow points the pipe direction. the 2 manholes are also visible in the land right behind our property
 

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  • Pipe layout v1.pdf
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Are you building a games room that requires building control to sign it off? Or is it more a shed type thing at the bottom of the garden?
 
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Are you building a games room that requires building control to sign it off? Or is it more a shed type thing at the bottom of the garden?
We have already got the permission from the local authority. Its a shed type thing at the bottom of the garden.

Thanks
C
 
If it's shed type thing then are you actually digging any foundations?
Yes, it will have a standard foundation footprint - 600mm wide and 1000mm deep. We will have suspended floors over the TW pipe and at least a 50mm clearance between top fo the pipe and the beam.
 
Yes, I've done this with Thames Water. Mine wasn't as big as yours, but cost around £600. I did the drawings myself to save money on those. TW required me to have 300mm clearance around the pipe.
 
Yes, I've done this with Thames Water. Mine wasn't as big as yours, but cost around £600. I did the drawings myself to save money on those. TW required me to have 300mm clearance around the pipe.
Was this recently. Also how far was you pipe below ground level - as ours is 300mm we will 50mm or maximum100mm clearance space
 
Was this recently. Also how far was you pipe below ground level - as ours is 300mm we will 50mm or maximum100mm clearance space

About 7 years ago, the invert level was 450mm and the pipe diameter was 200mm. I know they charge different amounts for different pipe diameters, why I do not know as they're not the ones actually doing anything.....
 
About 7 years ago, the invert level was 450mm and the pipe diameter was 200mm. I know they charge different amounts for different pipe diameters, why I do not know as they're not the ones actually doing anything.....
Thanks - did you have to get a pre and post construction survey as well
 
Thanks - did you have to get a pre and post construction survey as well

Yes, they are required and organised by Thames Water, you just need to tell them as soon as you've 'built over', then they'll organise the second survey.
 
Yes, they are required and organised by Thames Water, you just need to tell them as soon as you've 'built over', then they'll organise the second survey.
Oh nice - in my case they are asking me to pay for the surveys. Did you pay or was it part of the application fee
 
Wessex do, but you pay for them as part of the application fee. Wessex also do free online mapping. It takes 5 minutes to have an asset map by email. Just done one for Severn Trent - their maps come via a third party and costs about twenty quid or more depending on the area of the map?
 

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