At Christchurch University in 1998, the tanking system in the basement of the eight-storey Maths & Science Building had failed. Groundwater levels were above the height of the basement, as the site adjoins a small watercourse called Ilam Stream; and pressure seepage was increasing at a significant rate.
With four “six inch” de-watering pumps operating, the basement floor was still largely covered with water, and water was seeping in through cold joints in the walls and lift shafts up to nearly 2 metres above the floor level.
The urgent objective was to arrest this water ingress and permanently prevent reoccurrence.
You’re invited to download the FREE case study, which discusses the solution and results of this project.