What we’ve done so far: New sewer and drainage
The installation of drainage is progressing, with more than 2,000 metres of drain and some 54 manholes installed across the site. That equates to a quarter of all drainage installations, and a fifth of the total number of manholes required on the site.
Previous update: June 2018
The provision of a new sewer to replace the existing Pinkston Road Sewer by constructing a new diversion is an integral part of the works at Sighthill TRA project , as it is key to allowing follow on works to be carried out such as construction of earthworks and new drainage routes.
The works involve replacing an old Scottish Water sewer by installing 1no 6m diameter drive shaft and two 5 metre diameter reception shafts to a depth of approx. 18 metres below ground. These shafts will then be connected by a 240 metre long tunnel, with a 1200 millimetre internal diameter. The tunnel will be constructed using a Tunnel Boring Machine, decorated with artwork from the children at Saint Stephens’s primary school.
There will be a combined total of over 1,800 m3 of material excavated during the construction of the shafts and tunnel.
Tunnel facts
Total length of pipework: 265 metres (equivalent to double the height of Glasgow Tower or three football pitches long)
Greatest depth below ground level: 21 metres (equivalent of two buses parked end to end)
Total Volume of earth to be removed: 920m3
