paul f they don't know where all the shared drains are. it is expected that you contact them if you know your building over or near one of these "new" public sewers. I there is a problem with the drain though and you use them to come fix it because it is there responsibility now and they find...
it sounds like you have got most things in place for a full plans building regulation application. This is required when building near to sewers. BN's should not be used. The council may not be that busy at the moment and it could be checked and passed in no time and then you can work to those...
part M does not apply to extensions or material alterations of dwellings see:
http://www.legislation.gov.uk/uksi/2010/2214/schedule/1/made
These are the requirements of the Building Regulations!
if you cap a drain it needs to be as close to the remaining live run as possible to prevent...
Paul C knows his stuff. If the regulation does not apply as stated in the SI
http://www.legislation.gov.uk/uksi/2010/2214/schedule/1/made
then it cannot be enforced! forget what any guidance says.
down stairs toilet can be removed.!
easiest is to fill it with lean mix. no compaction needed. i bet you would love to go down the 6m and start compacting the hardcore in 150mm layers! £1.9k to the ready mix company would be cheaper than piles! engineer could design a heavy raft also. what did your engineer say anyway?