Paisley Transfer Sewer, Scotland
Client: Scottish Water.
Principal Framework Contractor: Amey / Byzak
The aim, needs and function of the transfer sewer include general upsizing and replacement, (sewer) flood alleviation, in-line (sewer) detention and storm storage, and water quality improvements to local rivers and burns, including the White Cart Water, and Espedair Burn.
Overall the contract consisted of the Installation of 1.6km of pipeline designed as a new strategic transfer sewer running through Northern, central and Southern Paisley, Renfrewshire.
Other works on the project (carried out by others) included abandonment of existing CSO’s and the construction of new screened CSO chambers and subsidiary connection pipework.
Scope of Works
The scope of the works for V.J. Donegan was to undertake all tunnelling sections of the project consisted of 1.5 KM of sections varied in diameter and consisted of 1000mm/1200mm/1500mm diameter micro tunnel pipe jacks.
V J Donegan utilised three Herrenknecht AVN Slurry type pipe jacking machines on the project, of 1000mm diameter, 1200mm diameter and 1500mm diameter. The smaller diameter machines delivered drives from 50m to 200m in length.
The 1500mm diameter machine was utilised to deliver the final and longest single drive of 285m underneath Saucehill Park and the adjoining properties and businesses
In all 13 pipe jacks were undertaken including crossings under roads, highways, rivers and a rail crossing underneath the Paisley Canal Line.