Underground Parking Construction - Precision Engineering with GP7

Optimizing underground parking construction using our solutions by GP7 Enginyeria i Medi Ambient

GP7 Enginyeria i Medi Ambient is a company specializing in surveying and environmental management, led by Albert Salvadó, a professional with over 40 years of experience in the field. The company undertakes a wide range of surveying work, including stakeouts, surveys, and both field and office work.


  • Minimize construction costs: One of the primary objectives was to reduce the overall cost of constructing the underground parking. This involved efficient resource management and the use of advanced surveying techniques to avoid unnecessary expenses. By accurately mapping the site and planning the excavation and construction processes, GP7 Enginyeria i Medi Ambient aimed to save on material and labor costs.

  • Meet strict technical requirements: The project had specific technical requirements that needed to be adhered to in order to ensure the structural integrity and safety of the underground parking. This included precise measurements and alignment, as well as managing the high water table to prevent flooding and structural damage. Achieving these requirements was crucial for the project’s success and compliance with regulatory standards.

  • Efficiently manage high water table challenges: The construction site had a high water table, posing significant challenges to the excavation and building processes. Effective management of this issue was essential to prevent water-related problems during and after construction. This involved using 25-meter screens around the construction area to control water ingress and employing precise surveying techniques to monitor and adapt to changing water levels.


In the underground parking project, GP7 Enginyeria i Medi Ambient, under the direct management of Albert Salvadó, implemented a series of advanced surveying techniques. Using 25-meter screens around the construction area to control the high water table, the company carried out a detailed stakeout of the land.

Albert personally managed the creation and adjustment of the surveying plans, downloading the necessary files and collaborating with the technical office to identify and solve potential problems and improve the stakeout methods. The plans were optimized for field use, ensuring maximum precision and efficiency in construction.

Equipment used

To achieve these objectives, Albert used cutting-edge equipment from Leica Geosystems, including:

  • Leica Nova MS50: A robotic total station that combines a total station, a precision 3D scanner, digital imaging, and GNSS connectivity in a single device. The MS50 can measure without a prism up to 2000 meters (tested up to 800 meters with excellent results) and its robotization allows for autonomous work. The Leica Captivate field software complements the hardware with an agile interface, allowing DXF plan exports, data storage, and highly accurate stakeouts.

  • Leica Viva GS16: A GNSS smart antenna with self-learning capabilities, ideal for demanding environments and various measurement conditions. After a firmware update recommended by Leica Geosystems CPEC, the GS16 showed a notable improvement in performance, especially in wooded areas.

  • Leica CS35: A tablet that serves as a versatile controller designed for durability and a wide range of surveying tasks. Albert is currently considering upgrading to the Leica CS30, a more modern and compact version. The CS30 is a versatile field controller designed to offer durability and is small enough to carry anywhere while being capable of handling various surveying tasks, utilizing imaging sensors, and working with plans.


  • Cost reduction: The precise application of surveying techniques significantly reduced costs associated with controlling the water table and optimizing construction resources.
  • Requirement compliance: Thanks to experience and precision in managing plans, the project met all established technical requirements.
  • Operational efficiency: Effective collaboration between Albert and the technical office resulted in a smoother construction process, less prone to errors, leading to faster delivery times and more efficient use of resources.
  • Adaptability and problem solving: Albert’s ability to adjust and fine-tune plans based on field conditions allowed for quick adaptation to any unexpected changes or challenges, ensuring continuous project progress.
  • Precision and reliability: The equipment used, especially the Leica Nova MS50 total station, allowed for exceptional precision, closing with 0 mm in x, y, and z, providing high reliability in the final results.

Expert advice

Albert Salvadó says: “It’s worth keeping your equipment up to date, especially with a premium brand like Leica, which is always working to innovate and improve equipment performance.”



Cost savings achieved in overall construction costs.

0 mm

Deviation in x, y, and z axes, ensuring precision in measurements.

Bloc Leica Geosystems CPEC

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