Tunnelling

Projects

  • Project_Tunnelling_Langstaff Trunk1
    Langstaff Trunk Sanitary Sewer Laser Scan

    MMM Group used high-definition laser scanning to create an accurate 3D model as-built survey of this 2.744-m diameter, 5.5-km long, and 25-m deep tunnel, accurate to the sub-centimeter range This survey will be used to compare the final constructed tunnel to the design, and to report all differences in excess of the construction tolerances, both…

  • project_Tunnelling_HydroOne1
    Hydro One Midtown Tunnel

    Provided comprehensive services in tunnel design, including project coordination; civil engineering design, including the design of sump pumps; structural design; topographical and legal surveying; traffic management, including temporary traffic signal design; ventilation design; and contract administration Tunnel design included a total of three shafts ranging in depths, two different support systems of steel liner plate…

  • project_Tunnelling_EnwaveChilledWater2_Credit_Hamid Javady
    Enwave Chilled Water Distribution Network

    Project comprises 3.5-m OD rock tunnels with twin 1,200-mm diameter cement-lined, steel chilled water supply and return pipes Chilled water service connections are provided to downtown high-rise buildings through 5.2 km of tunnels, and 10.4 km of trunk chilled water lines under roadways Considerations were made in locating the construction shafts to minimize disruption to…

  • project_Tunnelling_WinstonPark3_Credit_Hamid Javady
    Winston Park Sanitary Sewer Horizontal Directional Drilling

    MMM Group (MMM) provided surveying, design, and contract administration services for the installation of a 2.7-km long sanitary sewer Wastewater main was installed by open cut using Horizontal Directional Drilling (HDD) trenchless methods for the undercrossing of the QEW flyover ramps and two Enbridge high pressure pipelines MMM reviewed specifications of HDD bore plan, and…

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Experts

  • bios_infrastructure_PeterBarrington
    Peter Barrington

    Peter Barrington Project Manager, Contract Administration Key Highlights: Extensive experience in inspection and project management of a variety of construction projects including infrastructure, large diameter watermains, highways, bridges, stormwater management ponds, and rock and soft ground tunnelling Well-versed in all methods of construction, with past direct work experience with various civil and building contractors Construction…

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