Drain direction and depth

[shd1970]

I am looking to dig out what is my garage floor (its a link detached house and its just covered in gravel), and put down hardcore and a concrete base

My neighbours kitchen sink waste (it is only sink and washing machine...not toilet, and their kitchen is at the back of their house btw) goes right under my garage and into the manhole in the middle of my drive

Other than just digging down and *finding it*, is there a way to map the depth and direction ?

From what i know, its an old clay type pipe

 

[Newboy]

Local drain company to 'CAT & genny' trace the drain - should be able to give you the depth of the drain with a CAT4 detector

 

[Ian H]

The manhole should give a good idea of the depth and direction.

 

[HERTS P&D]

He needs to find it first, try a metal detector if it is not visible or unsure of location.

Andy

 

[shd1970]

when i say find the drain, i mean the pipe and its direction
i believe it is a clay pipe encased in concrete so not sure a metal detector will pick it up

i know where the manhole cover is as i replaced the metal lid some years ago

 

[Hugh Jaleak]

Water divining may give you an approximate location, provided there's no other pipework in the vicinity. Drain should run in a straight line from manhole to gulley, if you still need definite clarification, then its CAT and Genny or Sonar tracing.

 

[John D v2.0]

Water divining may give you an approximate location,

You're not wrong there! There was a Twitter storm recently because some social media communications teams at water companies said that their teams may be using that techniqueoccasionally. People assumed the situation media team was right and the engineer's were wrong, which is the less logical explanation

 

[Hugh Jaleak]

Its worked for me before now! Guy with expensive tracing gear, and me with a bent coat hanger, we both gave the same position within 6 inches. Dug down and found pipe.

 

[^woody^]

Its worked for me before now! Guy with expensive tracing gear, and me with a bent coat hanger, we both gave the same position within 6 inches. Dug down and found pipe.

I've always picked up Radio 1 when I've used metal hangers, so a bit distracting. Plastic crazy straws are better IMO.

 

[^woody^]

i believe it is a clay pipe encased in concrete so not sure a metal detector will pick it up

Maybe not, but you may find a pouch of Roman coins instead and then you can pay one of the drainage chaps in this thread to come down stand on the manhole lid and triangulate the hypotenuse of the drainage line using the squint method.

 

[John D v2.0]

I've always picked up Radio 1 when I've used metal hangers, so a bit distracting. Plastic crazy straws are better IMO.

Not allowed any more, plastic straws are bad for the environment. You'll have to use reusable ones from now on

 

[^woody^]

That's crazy. Are we the only family that washes straws and reuses them?

 

[tomfe]

That's crazy. Are we the only family that washes straws and reuses them?

No, but when milk gets left in them the kids don't like cheesy juice.

 

[Hugh Jaleak]

I've always picked up Radio 1 when I've used metal hangers, so a bit distracting. Plastic crazy straws are better IMO.

Ah, but I prefer Radio 2, and I think the coat hanger knows this.