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Track Monitoring in Real-Time via the Web +++ Straight Up to the Sky +++ Reclaiming Efficency +++ 3D Laser Scanning Reduces Risks +++ Precision Concrete for 300 km/h Trains +++ Searching for Bombs Under Water +++ Gateway to Korea +++ Adventure Surveying on Mont Blanc
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- Track Monitoring in Real-Time via the Web
To reduce traffic through town, the local authority for the German town of Traunstein decided to build a bypass road starting in spring 2009 and including a new tunnel under the Munich – Salzburg railway line. The track owner, Deutsche Bahn AG (DB), stipulated continuous monitoring of the stretch of rail affected by the tunneling operations. Lead consultant Bernd Gebauer GmbH decided to install a track position monitoring system and engaged consulting engineers ing Traunreut GmbH for the task. The system of freely combinable measurement sensors from Leica Geosystems in conjunction with the Leica GeoMoS or GeoMoS Web monitoring software proved to be perfectly suited to this task.
- Straight Up to the Sky
When complete, the iconic 1 World Trade Center (WTC) in New York City, familiarly known as the “Freedom Tower,” will soar 1,776 feet (541 m) into the air to become the tallest building in the United States. To make sure this architectural landmark rises straight and true, DCM Erectors will rely on an innovative structural monitoring system and positioning technology patented by Leica Geosystems, that is uniquely designed to precisely position very tall structures along the design centerline.
- Reclaiming Efficency
How many surveyors are needed to stay ahead of 75 to 100 construction workers building a USD 100 million wastewater treatment and reclamation plant addition? Using traditional total stations and data collectors, such a project would normally require four or five people to handle the construction survey work. However, new-generation surveying equipment enabled field engineer John Simms to complete all of the work by himself.
- 3D Laser Scanning Reduces Risks
In construction, there’s a big premium on identifying and fixing potential field problems early – well before a crane is lowering something critical into place and the ugly discovery is made that things don’t fit or something’s in the way. Such problems can be especially costly on projects involving complex structures. For one contractor however, this type of risk has been sharply reduced thanks to Leica Geosystems High-Definition Surveying™ (HDS™) 3D laser scanners and software and the way the contractor takes advantage of them. In fact, Hoffman Construction, a US-based $1 billion/yr contractor, has been successfully minimizing project risks and achieving additional project benefits with HDS since 2003.
- Precision Concrete for 300 km/h Trains
Modern railway infrastructure often presents technical challenges for developers and builders alike, since high-speed railway tracks have to withstand enormous forces and vibrations. This also applies to the 123 km section between Erfurt and Leipzig/Halle, which forms part of the new Intercity Express (ICE) link between Munich and Berlin. Deutsche Bahn AG customers will eventually be travelling along this stretch at speeds of up to 300 km/h (190 mph), completing their journeys to or from the German capital in four rather than the current six hours. The ICE will travel over six major bridges and through three tunnels, the longest being the twin-tube Finne Tunnel with a length of almost seven kilometers. The precise control of the concrete paver that provided the bed for the subsequent track construction through the tunnel was accomplished with total stations and the 3D machine control system PaveSmart 3D from Leica Geosystems.
- Searching for Bombs Under Water
An estimated 7,000 bombs were dropped on Dresden during the Second World War. While most of them brought death and destruction, many still lie underground or in the Elbe river – without having detonated – and continue to pose a danger to construction projects even today, some 65 years later. Matthäi used the state-of-the-art Leica RedLine series satellitebased machine control system to search for undetonated Second World War bombs on and around the site for the new Waldschlösschen bridge over the Elbe.
- Gateway to Korea
The Yeong-Jong New Airport Highway Bridge, a steel, double deck, box-girder suspension bridge, links Incheon International Airport to Seoul city as a real gateway to Korea. It is the world’s first 3D self-anchored suspension bridge servicing a highway on the upper/lower decks and a railway on the lower deck. The bridge crosses the sea between Yeong-Jong island and Incheon city and lies between Kyeongseo-dong (Changdo) and Unbuk-dong (Yeong-Jong island) of Incheon city on the Yellow Sea. Leica Geosystems was invited by the New Airport Highway Company to perform a load test with GNSS RTK technology. Equipment and software completed the test smoothly, achieving impressive accuracies in the range of 1 cm. This load test convincingly vindicated the superiority of GNSS based bridge monitoring. After the test the upgrade and modification of the structural health monitoring system was completed using a GNSS monitoring system from Leica Geosystems that focuses on monitoring the girder geometry and the displacement of the bridge towers.
- Adventure Surveying on Mont Blanc
Every two years, the chartered land surveyors of Haute-Savoie and Leica Geosystems measure the elevation of Mont Blanc, the roof of Europe, the famous mountain straddling the Franco-Italian border.
- Accurate, Enriched Data at Lower Cost
When the CH2M HILL survey team set out to map the City of Woodburn, Oregon’s 1,500 sewer manholes, the challenge was to gather and organize a varied group of data with a limited budget. For each manhole the client wanted: the pipe invert elevation; pipe size and type; documentation of condition; amount of debris; and photos. A traditional approach would have generated an inordinate number of notes that would have been difficult to organize and deliver within budget. After considering various products, the team chose Leica MobileMatriX on ArcGIS, a survey software that provided the team with geographic information system (GIS) capabilities and survey-grade accuracy in the field. The field integration of GIS enabled the team to complete all fieldwork 16 days ahead of schedule and 25 % under budget even while using MobileMatriX for the first time.
- The Leica Lino Family: Everything Level
The introduction of the Leica Lino 2 in 2007 set a new standard for cross line lasers, and in the same year received the Red Dot Product Design Award. Craftsmen appreciate the Leica Lino 2 because of its outstanding optics and the proven quality. Encouraged by this success, Leica Geosystems has created a comprehensive product palette around these handy tools and has recently expanded it with three point and line lasers that optimally cover all areas of application. The new Leica Lino P3, Lino P5, and Lino L2P5 perfect all aligning, plumbing, and leveling tasks.
- 2009 Leica Geosystems HDS Worldwide User Conference: A Great Success
Leica Geosystems 7th annual worldwide user conference for users of its High-Definition Surveying™ (HDS™) laser scanning products was held 26-28 October 2009, in San Ramon, California. Despite the global recession, more than 250 participants from 20 countries attended, a strong symbol of continued high interest in 3D laser scanning. |
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