Rainwater question

[Hugh Jaleak]

No hard and fast rule on direction of pipework, would entirely depend on the Road Builders at the time. Usual practice for that era would likely have been road gullies into a dedicated storm drain and everything else into a combined sewer. If in series, I'd expect to see large Catchpits under the gratings, as opposed to what sounds like standard road gullies, so would be confident there is a storm sewer somewhere under the road.

General rule with Highway Drainage, the Highways Authority are responsible for the Road Gullies and associated connections until it enters a sewer, which then, if taking other discharges from properties, becomes the Water Co's asset.

Having found the address on Google Maps, there is clear evidence of a sewer having been laid/relaid, coming out the bottom of Joiners Lane, crossing the central area of the roundabout before heading to a Manhole in the verge on the opposite side of Gravel Hill, which doesn't seem to correspond to anything on your map. Any surface water sewer would likely discharge into the nearby watercourse, any evidence of an outfall?

If separate systems, (i.e. storm and foul), then I would expect to see 2 sets of manhole covers, possibly of different types/shapes, which there seems to be. A 'Teddy Bear' cover in the middle of Gravel Hill, and a standard rectangular cover in the verge.

 

[Paul205]

Hugh, thanks for this I'll read what you have said again tomorrow and may ask some follow up questions if thats ok!

 

[Hugh Jaleak]

Feel free, I'll do my best to help. Just bear with me, back at work tomorrow, so time online will be somewhat more limited again.

 

[Ian H]

If you mean in series as in one runs directly through another, you could look into a gully, on the water level you should see an open pipe on the inlet and a capped access on the outlet (assuming they are clear of silts).

I think they will be joined to a main on junction as you call a herringbone.

 

[Paul205]

Thanks for your responses everyone and apologies for not responding earlier.

I have been out today and taken photographs of the various covers in the road. Just to reconfirm this thread isnt about toilet waste but is about drainage of rain water.

There are open grates where the road meets the kerb and then a series of different larger covers usually midway been the centre of the road and the kerbside. The broken open grate seems to have one 'outlet' pipe (in the direction of water flow) and does not appear to have an 'inlet' pipe.