2.6 km drive by Jay Dee Contractors in sands, silts and clays along Weinbach Avenue by 3.5 m diameter Lovat EPB. 3.2 m to 6.4 m cover. Project includes 15 manhole shafts. No dewatering allowed over most of drive because of proximity of business and residential property. TBM under launch. Sept 1999.
Lovat has completed over 1 km, lately in difficult ground conditions caused by fractured utilities above the alignment. The machine was delayed while a relief shaft was sunk and well points installed. Currently achieving 13 m/shift erecting ribs and lagging at 1 m intervals and drilling a 30 m-long drainhole at every set. November 1999.