The company is developing the 13.2 km section 1 of the project, which is one of the five sections of the highway, which will extend 123 km after completion, with a total cost of approximately 1.6 billion euros.

PORR's Lot 1 contract did not face some other extended geotechnical challenges, but the company chose to set a benchmark for the work. Daniel Boehnke is the construction coordinator of the PORR contract and is responsible for supervising the site management personnel to handle all aspects of Lot 1 extension. Boehnke said the route is located in a relatively underdeveloped area. He commented: “When we started, it was a green space and forest.” Boehnke explained that this makes the job easier because there is no need to consider local transportation, which will require transportation for material supply or construction machinery movement. Control System.

The construction project started in March 2021. Lot 1 project requires a lot of earthwork, with 1.7 million cubic meters of excavation and 1.4 million cubic meters of filling. Due to the large amount of material to be moved, Boehnke explained that he decided to use the latest 3D machine control technology to optimize the work. However, this presents a challenge. He explained that Romania has not used complex 3D systems for road construction before, and the experience of this technology in PORR is also very limited. The company hopes that the three excavators and three bulldozers used in the project will have a 3D earthwork package installed. He said: "A total of six machines on our site have the system installed. We have to figure out what to do. For us, this is a brand new experience."

According to Boehnke, the main benefit is that there is no need for on-site surveyors to always be on-site to control operations. This makes the earthmoving part faster and also reduces costs. In order to ensure that the excavation and filling work meets the specifications, PORR has asked its surveyors to check the results and comment: “If we measure, the tolerance is 3-5%.” The system means that site managers can obtain information about the excavation and filling data. Critical information, which is highly reliable. "We can see the performance live," he commented.

Project design data and as-built data can be easily transferred between Trimble Works Manager and Trimble Earthworks system. He said: "The operator can see the design changes inside the cab." This is a learning experience for the machine operator, and he commented: "In the beginning it was a challenge for the operator because they were afraid of making mistakes. "However, Boehnke said that they were able to quickly learn how to use the system. It turns out that the training from Trimble supplier Sitech is very valuable. After choosing a 3D system for its earthmoving equipment, PORR also decided to purchase a kit for its paver. Boehnke said: “We bought a system for the two new Terminators.” PORR has used the device to test the road section, but is still waiting for approval from the Romanian authorities to continue using it on the highway. Boehnke said: "The model has been completed and loaded onto the finishing machine. We have received Sitech training so that the operator knows how to use the system." Keywords: International Engineering News, Foreign Engineering Project Information

The plan is to lay three floors in four elevators. The 16 cm base layer will be laid twice, 8 cm each time, then an 8 cm adhesive layer, and finally a 4 cm wearing layer. However, Boehnke believes that the system will provide the required quality and commented: “After laying the base layer, it should be very accurate.” He said that using a 3D system for paving also has cost advantages, just like the earthwork part of the job. The use of the 3D system eliminates many complex tasks in the lofting process, and can also improve the paving accuracy. The latter will help reduce material usage and significantly reduce costs.Editor/Baohongying