Standard Sewage & rainwater pipe layout

LostInLM

Hi,

Trying to find a diagram which shows the standard layout of sewage pipes and rainwater drainage for a normal 3 bedroom semi-d attached to public sewage. Anybody able to point to this or guidelines or standard practice around this area.

Also is it normal for part of sewage from neighboring house to link into drains for your house?

Any help appreciated.

LostInLM

Anybody?

K.Flyer

There is no "standard layout" for a house as such as properties can differ greatly. What is important is the gradient from one point to the next. Also common sense and best practice applies to the locations and quantity of access points for maintenance to be carried out.
It is not uncommon for several properties to be connected into a communal sewer pipe, usually running through the back gardens, that connects to the public mains via an interceptor trap located in the front garden of one of the houses.
With this type of set up each property is equally responsable for the maintenance of the system. The exception being where there is clear evidence that someone has caused a problem to occur.
The same, more or less, applies to surface (rain) water drains. They usually run alongside the sewer system, but don't usually have an interceptor trap before the main connection.
The amount of houses on the one system can vary greatly, I have seen up to eight houses run into the one interceptor.
Hope that helps.