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Case Studies

Discovering Voids and Delamination (office building)

Discovering Voids and Delamination (office building)

An engineering firm retained multiVIEW to perform a geophysical survey which objective was to map the location of possible voids beneath the concrete floor slabs in four small tunnels situated in the basement of a large office building.

Void Detection

Void Detection

multiVIEW was retained to collect road condition data on the CPATT (Centre for Pavement and Transportation Technologies) test road at the University of Waterloo.

Recording Variations in PCC & Asphalt Thickness Along a Major Waterloo Roadway

Recording Variations in PCC & Asphalt Thickness Along a Major Waterloo Roadway

multiVIEW was retained by Applied Research Associates (ARA) Inc. to perform a two phase Ground Penetrating Radar (GPR) survey for a 1.12 km section of Spragues Road in the Regional Municipality of Waterloo. The survey was targeted towards finding the thickness of the asphalt layer along with the thickness and extent of the concrete (PCC) layer underneath the road asphalt.

Subsurface Utility Engineering for LRT

Subsurface Utility Engineering for LRT

multiVIEW was retained to provide comprehensive Subsurface Utility Engineering services to assist with the design of the proposed LRT System.

The Role of SUE in Tomorrow's Transportation

The Role of SUE in Tomorrow's Transportation

Rapid Transit projects including LRTs (Light Rail Transit) and BRTs (Bus Rapid Transit) have become a key priority throughout the GTHA, as a solution to manage growth, ease congestion and prevent urban sprawl. As these projects are being built through highly congested areas, both above and below ground, one of the most complex challenges involves accurately locating existing utilities during the design phase and discerning whether the utility should be accommodated or relocated.  

Bridge Deck Deterioration

Bridge Deck Deterioration

Evaluating the condition of a concrete bridge deck overlaid with asphalt.

Locating Post-tension Cables

Locating Post-tension Cables

Coring of bridge deck with post-tension cables required for condition assessment.

Mapping Bedrock

Mapping Bedrock

Construction and design engineering activities requiring bedrock depth data benefit regularly from geophysical site evaluations.

Tree Root Detection and Imaging

Tree Root Detection and Imaging

Ground Penetrating Radar for Tree Root Detection and Imaging

Decommissioned Land

Decommissioned Land

The area under investigation was in the process of being decommissioned. The primary objective of the survey was to complete an electromagnetic survey in an area that has exhibited very high pH readings in surface water and groundwater, with the aim of possibly defining spatial limits to these high pH areas. The information was used by the engineering firm to assist with their investigation of the property.

Unsure of the ON1Call process? Here are some simple steps to help ensure compliance

Unsure of the ON1Call process? Here are some simple steps to help ensure compliance

Though instances of utility damages across the province have decreased over the past decade, the latest Damage Information Reporting Tool, produced by the Ontario Regional Common Ground Alliance (ORCGA) found that 39% of damages that did occur were the result of insufficient excavating practices. Here are a few key steps to keep in mind in order to ensure compliance and prevent a potentially dangerous or costly situation.

Construction Practice Classification

Construction Practice Classification

multiVIEW conducted an investigation of Highway 401 near Toronto, Ontario in order to determine construction practice classifications. Many of the historic construction practice were not known and documentation was not readily retrievable. The objective of the RoadMap GPR survey was to classify changes in construction practice via created images and tabulated data.

Getting Beneath the Surface of the Union Station Revitalization Project

Getting Beneath the Surface of the Union Station Revitalization Project

As part of the Union Station Revitalization Project, GO Transit is expanding its services and infrastructure with a goal to increase ridership, enhance speed and anticipate growing demand. To assist with this project, the SUE process was implemented to get an accurate depiction of all existing public and privately owned utility services including gas, hydro, water, fibre optics, telecommunications and signal cabling.

Mapping Deterioration Along Toronto's Gardiner Expressway

Mapping Deterioration Along Toronto's Gardiner Expressway

The City of Toronto’s Gardiner Expressway has long been the topic of much debate: structural concerns have resulted in recommendations that sections of the Highway be rehabilitated and in some cases, replaced. To get an accurate picture of the Expressway’s condition, Ground Penetrating Radar was used to map bridge deck deterioration over a vast area. This allowed informed decisions to be made around rehabilitation and replacement.

Construction Practice Zoning

Construction Practice Zoning

An investigation of Highway 401 near Toronto, Ontario was conducted in order to determine construction practice zoning. Historical records of construction and repair did not exist or were hard to locate. The objective of the RoadMap GPR survey was to assess subsurface conditions over vast lengths of road.

Mapping the spatial position of buried metallic objects

Mapping the spatial position of buried metallic objects

The primary objective of the survey was to map the spatial position of any buried metallic objects that may occur within the investigation limits. The secondary objective was to map the spatial position of any anomalous conditions that may exist beneath the existing buildings The information was used by the engineering firm to assist with their site investigation of the property.

Safety Tips for Working in a Stormy Season

Safety Tips for Working in a Stormy Season

As the result of an active storm track and abundant Gulf moisture, it’s been an exceptionally stormy spring with above average precipitation. This weather pattern poses unique safety challenges for utility locators and other outdoor workers. Here are some tips for staying safe in stormy weather:

Road Condition Data Collection

Road Condition Data Collection

multiVIEW was retained to collect road condition data on the CPATT (Centre for Pavement and Transportation Technologies) test road at the University of Waterloo.

Discovering Voids and Delamination (sewer pipes)

Discovering Voids and Delamination (sewer pipes)

A contractor retained multiVIEW to carry out a ground penetrating radar survey in two underground sewer pipes. The primary objectives of the survey were to map the thickness of the pipes and to determine if any voids had developed in the soil/rock surrounding the pipe adjacent to the areas of recent pipe repair.

Historical Repair Zone Identification

Historical Repair Zone Identification

multiVIEW conducted surveys for undocumented and non-visible repair zones on Highway 401 near Toronto, Ontario. Historical records of repair did not exist or were hard to locate.

Real-Time Subsurface Data Empowers Safe Excavation

Real-Time Subsurface Data Empowers Safe Excavation

Harrington & Associates, a construction management company based out of Richmond Hill, was carrying out renovations at an industrial warehouse and needed to ensure that no buried utility services existed where excavation and was planned. In response, the contractor retained multiVIEW to carry out concrete scanning using Ground Penetrating Radar (GPR) and accurately map the location and depth of existing drain lines in the project area.

Tips for Staying Safe at Work this Winter

Tips for Staying Safe at Work this Winter

The Farmer’s Almanac had predicted this winter would be colder than normal with above-average precipitation and snowfall. More than just inconvenient, these conditions can create additional hazards when working outdoors. Here are some tips for staying safe.