Projects we have kept watch over.

A two-storey underground car park is built inside secant-pile walls with internal bracing in the city centre. We monitor vibration and noise on the buildings around the excavation, the National Museum among them, level for settlement and follow the walls with automatic inclinometers in the piles. Data is gathered in Kronos.

• 8 vibration monitors
• 8 automatic inclinometers
• Approx. 150 parking spaces

Facility & constructionExcavations & shaftsVibration & noise

During the works at Frederiksberg Runddel, wireless vibration monitors follow the buildings around the square, the Storm P. Museum among them. The alarm limits are set to DIN 4150-3, and alerts go out by SMS and email.

• 4 vibration monitors
• DIN 4150-3

Vibration & noise

Groundwater monitoring for the metro extension in Nordhavn. Wireless dataloggers in the monitoring wells, manual dip readings and upkeep of wells and covers, with data in Kronos and regular status reports.

• 9 wells
• Wireless dataloggers

Groundwater

Precise levelling of a pile-founded warehouse on Oceankaj. Bolts on the piles are levelled against fixed points, with a zero reading and repeated follow-up surveys.

• 7 measuring points
• Precise levelling

Facility & construction

Climate adaptation and renewal of Helsingør's town centre. Wireless triaxial vibration monitors on the buildings along the works, with alarm limits to DIN 4150-3, SMS and email alarms and monthly reports.

• 14 measuring positions
• DIN 4150-3

Vibration & noise

While Aarhus Central was rebuilt for electric trains with the station in service, we monitored four tracks next to the works automatically in 3D. Prisms sat in pairs on the sleepers about every 5 metres and were measured every hour around the clock, with alarm limits of 3/6/12 mm, daily reports and web access for Banedanmark, Aarsleff Rail and their consultants. The system went from offer to operation in three weeks.

• 2 automated total stations
• 279 prisms
• 4 live tracks

Railway & track

Automated monitoring of a concrete silo and two built-in production basins while a pipeline was driven past them by micro-tunnelling.

• Silo and 2 basins

Facility & construction

A new 600 m cable-stayed bridge across the Frierfjord on the E18. At pylon P2 we cast strain gauges into the foundation, welded strain gauges to the temporary struts between the pylon legs with automatic readings and alarms in Kronos for about 13 months, and supplied custom anchor load cells. The gauges were zeroed at ground level, so the readings showed the actual strut loads as the pylon rose.

• 330 m main span
• 4 load cells of 3,500 kN
• Approx. 13 months of monitoring

Bridges & structures

A hydrostatic settlement system inside the deck of the new Storstrøm Bridge, with sensors above the piers and at mid-span, control PCs and visualisation. The system is supported by manual precise levelling and operated and maintained by us under an agreement with Vejdirektoratet.

• 106 sensors
• Approx. 4 km of tubing and cabling
• Operating agreement to 2028

InfrastructureBridges & structures

Monitoring across the disciplines around shafts, buildings, railway areas and the tunnel works: automated and manual 3D measurement, precise levelling, vertical and horizontal inclinometers, convergence sections, three-level extensometers, tilt sensors, crack meters, noise and vibration loggers and groundwater loggers — gathered in Kronos.

• 4 shafts
• Inclinometers in 4 piles per shaft

Facility & constructionExcavations & shaftsGroundwaterVibration & noise

Groundwater monitoring for the coming M5 metro line. Wireless dataloggers measure the water level every hour, supplemented by manual dip readings in further wells, and the data is transferred to Kronos for review and documentation.

• 26 wells with loggers
• 11 wells dipped manually

Groundwater

Automated 3D deformation monitoring of the terminal's columns, including while they were lifted so the ground below could be excavated and connected to the corridors under the terminal. Web access, daily quality checks, weekly reports and SMS alarms.

• 2 automated total stations
• 58 prisms

Facility & constructionBridges & structures

A 1.4 km cut-and-cover road tunnel beneath Svanemøllehavnen and Kalkbrænderiløbet, with anchored sheet-pile and secant-pile walls into the limestone and extensive groundwater lowering. Pre-construction condition survey, precise levelling of approx. 40 buildings and structures, vibration on 11 buildings, automatic inclinometers in 10 excavation compartments, GNSS on the wall tops, tilt beams at the anchor heads, automated total stations on the sheet piles and strain gauges on the struts. Alarm limits were updated for every stage. Early warning of wall deflections of up to approx. 100 mm gave time to re-tension the anchors.

• 11 ATS with 360 prisms
• 186 levelling points
• 39 GNSS units
• 63 tilt beams

Facility & constructionInfrastructureExcavations & shaftsVibration & noise

The shafts for the cloudburst tunnel at Vodroffsvej, Halmtorvet and Kalvebod Brygge, plus the marine works. Levelling, 3D measurement and 3D scanning, inclinometers in the secant piles, later upgraded to automatic chains, strain gauges, load cells, extensometers, groundwater, and noise and vibration.

• 3 shafts and marine works

Facility & constructionExcavations & shafts

A 1.3 km cloudburst tunnel bored 17–20 m below the city, approx. 15 m under 21 railway tracks, approx. 1 m above the Cityringen metro and beneath Kødbyen and listed buildings. As monitoring contractor directly for the owner we covered everything from method statements and permits with Banedanmark and Metroselskabet to decommissioning: automated 3D of the tracks and of the Cityringen tunnel lining, the buildings at the shafts and along the route, extensometers and deep levelling rods, convergence in a sewer more than 100 years old, noise and vibration, groundwater and gas. Limits of 2/3/6 mm applied under the tracks, with 24/7 standby and a backup total station during the metro crossing.

• 10 ATS with 492 prisms
• 31 extensometers
• Beneath 21 railway tracks

Facility & constructionInfrastructureRailway & trackExcavations & shaftsGroundwaterVibration & noise

Specialist monitoring during the concrete girder works and the load-out of a 12,000-tonne pylon foundation: load cells, vertical and horizontal displacement sensors and three automated total stations on the skid tracks, the quay wall and the foundation.

• 12,000 tonnes
• 3 ATS, 18 points

Bridges & structures

Special survey of slab track with a track-geometry trolley carrying a laser scanner, IMU and gauge sensor, supported by robotic total stations, digital precise levels, GNSS and a tunnel control network.

• 9.3 km of slab track

Railway & track

Three automated total stations on brackets followed the facades around the site for 12 months with daily checks while the foundation of the new museum building was built.

• 3 ATS
• 46 prisms
• 12 months

Facility & construction

Where the light rail crosses Banedanmark's tracks and the motorway, we monitored live tracks, bridges, a high-rise and a cut-and-cover tunnel. In Kongens Lyngby we combined six independent automated 3D systems with inclinometers along the whole tunnel under road and railway. At several stops, magnetostrictive sensors measure the deformation of the ground below the surface.

• 6 automated 3D systems at Lyngby
• Tracks, bridges and a high-rise

Railway & trackExcavations & shaftsVibration & noise

Comprehensive monitoring of stations, shafts and bored tunnels: automated total stations, retaining-wall inclinometers, strain gauges, anchor load cells, piezometers, crack meters, deep levelling rods, vibration and more than 40 dataloggers.

• 17 ATS with 576 prisms
• 1,131 strain gauges
• 56 piezometers

InfrastructureExcavations & shaftsGroundwaterVibration & noise

Monitoring of every new station and tunnel section during excavation, centralised in Kronos. It was the project SMT was founded for in 2011.

• Approx. 100 automated total stations
• 1,660 in-place inclinometers
• 250 groundwater points

InfrastructureExcavations & shaftsGroundwater