Mixed Use Developments

Residential Condo and Commercial Developments are bread and butter to WJ and have formed a large chunk of our dewatering both at home in and Toronto, as well as overseas.

Dewatering in Complex Geology

WJ were engaged to provide a dewatering solution for a mixed use commercial and residential redevelopment project. This would prove to be a complex dewatering project due to the presence of irregular groundwater conditions. The Upper Aquifer would prove to be most challenging requiring close well spacing, whilst monitoring of the Lower Aquifer was undertaken to determine whether the two aquifers were in connectivity.

The Dewatering Solution

The aim of the dewatering system was to target the upper aquifer while monitoring the drawdown in the lower aquifer using well points, and fortunately the system worked well on both accounts.

Internal and external dewatering was undertaking, utilising a compact sedimentation tank (due to the restrictions on space on the site) right next to the TTC box without causing any settlement or disruption.

Problem Solving on site

During the works gaps were encountered in the caisson walls which resulted in an inflow of water right on an interface condition, but WJ was able to quickly suggest a solution which effectively managed the issue to keep the project on schedule without any delay.

WJ continue to tackle challenges head on to ensure our clients needs are met.