New Residential Home – Thames Water Sewer Connection Herts

Client: LB Homes (Residential Developer) Duration: 1 Week Value: £5K - £10K

We were awarded this Thames Water sewer connection works on behalf of LB Homes. The sewer connection was required to connect a small residential development onto the main Thames Water sewer.

We were excavating the site and putting in a back drop connection. The excavation stage consisted of going 2.5 metres, this was the depth until the Thames Water manhole base was located. We visually monitored the depth up to 1.2 metres. Once this depth was reached (1.2 metres) standard lap trench sheets and timber frames were installed. This is known as shoring. Once the shoring was completed, the sheets were pushed down until the required depth for the sewer connection of 2.5 metres was reached. The manhole benching will be then be reshaped and new channel placed within the benching soffit to soffit.

The rest bend & back drop pipe work will then be constructed outside the Thames Water manhole and the top entry hole core drilled. On completion of the back drop construction all the pipe work is to be back filled in concrete. The new vitrified clay pipe for the sewer connection will be laid to line and level on a shingle bed and surround until the Thames Water demarcation chamber.

The type 1 was spread and compacted in 150 mm layers until the desired level was achieved. The block paving was then reinstated and the site was left clean and tidy. This completed the Thames Water sewer connection for the client.