#Surface trimble business center series

At Leipzig/Halle Airport, this feature proved particularly useful when milling the long runway.Īccordingly, the milling machine can be permanently controlled with millimeter accuracy. It’s an ideal setup for construction sites with several prism devices and other reflective objects,” said Norbert Mattivi, Trimble applications specialist. “This feature makes the ‘hot swap’ between total stations very easy.

The total station is programmed to this precise address, which enables rapid re-location of the prism following a break in signal. With the Trimble system, each active prism device has an individual address.

“Using the total stations, we were able to keep the milling process going smoothly, even if the site was very busy with traffic, numerous machines and trucks,” added Dreer.Ī further advantage of this setup proved to be the stable communications between the total stations and the prism.

#Surface trimble business center series

On the site, crews relied on the Trimble MT900 Machine Target with patented active tracking technology on the milling machines to guarantee a secure connection with a series of Trimble SPS930 Universal Total Stations placed strategically along the runway. Thanks to 3D-enabled milling, the CTB on the 80,000 square meters of taxiways and 228,000 square meters of runway presented a perfectly flat surface. This pass milled the bottom 4-6 cm of concrete and around 2 cm of the underlying CTB using a standard milling drum. The final milling pass was critical for the quality, because the milling machines needed to leave behind a suitably textured surface at the contractually-agreed elevation. “To hand over a completely concrete-free planum, we removed 42cm everywhere,” recalled Matthias Dreer, site coordinator for the project, who coordinated deployment of the 15 large milling machines for Kutter working over several weeks in a two-shift operation. Kutter accomplished the concrete milling in several passes. The milling depth was geared to the position of the dowels and anchors. In this instance, the 40cm thick concrete overlay was reinforced with several layers of dowels and anchors. The machines then “know” the target height of the milled surface for every point. This data was then transferred to the cold milling machines. By deducting the layer thickness, a dataset for the position of the milled surface was produced. Prior to 3D milling, the owner provided a digital model of the surface with defined locations of the upper edge of the new final concrete covering. “Cold milling machines are the ideal solution for vibration-free removal of concrete coverings, and we achieve the precision needed using the 3D control system,” said Bernhard Fischer, Head of Kutter’s Leipzig office. As the milling contractor, Kutter used a Trimble PCS900 3D Paving Control System linked to the cold milling machines to create the new surface, achieving an elevation accuracy of +/- 3 mm over the entire area. The owner specified that the runway surface be milled with enough precision that it could be used as the base to support a new concrete covering. KG Construction Company (Kutter) looked to its talented operators and 3D paving technology from Trimble to complete the project within these tight specifications. In addition, the new concrete covering will be installed directly onto the milled surface so the elevation needed to be kept within 10mm. In order to preserve the cement treated base course (CTB), the owner stipulated that the removal of the concrete surface needed to be vibration-free. In total, the 3.8km long, 60m wide north runway and associated taxiways, approximately 300,000 square meters of concrete surfaces, needed to be replaced. Since that time, about 400,000 planes, including some of the largest cargo and passenger planes in the world, have taken off or landed on the runway. The northern runway has been in operation since March 2000 and the concrete surface has deteriorated.

Smooth operations even in high wind conditionsĪs part of a modernization and infrastructure improvement effort at Germany’s Leipzig/Halle Airport (LEJ), Mitteldeutsche Flughafen AG was recently contracted to resurface the north take-off and landing strip, and a number of taxiways.

+/- 3 mm surface deviation across 300,000 square meters.

Average production of over 7,000 m2 per machine/per shift.

Trimble PCS900 3D Paving Control System.

The firm is Germany's largest milling company.īusiness Challenge: Resurface over 300,000 square meters of concrete at the Leipzig/Halle airport in Germany. KG Construction Company, headquartered in Memmingen, Germany, specializes in building construction, civil engineering and road construction, with a particular emphasis on milling. Customer Profile: Founded in 1925, Kutter GmbH & Co.