At XPLAN in Ljubljana, we use the Leica DISTO S910 for construction supervision and structural PZI documentation, where reliable measurements are essential. Measurement errors can affect both the quality of construction and its cost.
Our team combines civil engineering experience with digital measuring equipment, including the Leica DISTO S910 and TPD 100 measuring set. This has changed how we approach surveys, inspections and design: data can be captured more efficiently, checked and transferred into the project workflow with fewer manual transcription steps.
What can the Leica DISTO S910 and TPD 100 do?
The Leica DISTO S910 is a laser measuring instrument with a distance range of up to 300 m and a nominal distance-measuring accuracy of ±1 mm under the manufacturer’s stated favourable conditions. Point-to-point and 3D measurement accuracy also depends on the setup, range and measurement geometry; the ±1 mm distance specification is not a blanket accuracy claim for every 3D result.
Combined with a suitable tripod and measuring set, the equipment supports:
- 3D surveys of existing buildings and sites;
- preparation of structural PZI construction drawings;
- checks on completed construction work;
- quantity checks for the measurement and valuation records;
- supervision of energy renovation of façades, roofs and structures.
Digital measuring methods help address familiar problems with manual surveys: difficult access, human error and mistakes when transferring measurements into drawings or schedules.
Measurements for structural PZI documentation
Using the Leica DISTO S910 in supervision and design means that measurements can be recorded and checked as part of a documented workflow. Reliable survey information is an essential starting point for PZI construction documentation.
Our team uses the Leica DISTO S910 and measuring accessories to record the existing geometry and prepare 3D structural models. The resulting information supports:
- coordinated structural calculations and formwork drawings;
- quantities of reinforcement, concrete and timber;
- efficient preparation of bills of quantities;
- coordination with architects and contractors.
In practice, a better survey basis can reduce site queries and support clearer communication between the people involved in a project.
Construction supervision supported by laser measurements
During construction, the supervisor checks whether the completed work corresponds to the design. With the Leica DISTO S910, our team can check structural dimensions, review details against the PZI drawings, verify completed quantities and identify deviations promptly.
Measurements are saved digitally and can support the site records and valuation of completed work. A traceable record improves transparency and helps reduce the scope for disputes between the client and contractor.
Measurement records: transparency and quantity control
The measurement and valuation book, known in Slovenia as the knjiga obračunskih izmer or gradbena knjiga, is a key record for valuing completed work.
Integrating digital measurements into supervision helps provide traceable survey records, a documented basis for quantities and information that can be checked later. The achievable accuracy depends on the measurement method and conditions.
For the client, this means greater transparency. For the contractor, it provides a clearer, verifiable basis for valuation.
Benefits of the Leica DISTO S910 workflow
- Reliable distance measurements and documented 3D survey information.
- More efficient preparation of PZI documentation.
- Digital records that can be used in CAD and coordinated modelling workflows.
- Fewer manual transfer errors in design and construction.
- Greater transparency in supervision and valuation.
- Better checks on quantities and completed work.
Why XPLAN?
At XPLAN, we integrate Leica measuring technology into our structural PZI design and construction supervision workflow.
With our own equipment, we can survey demanding buildings and elements, including apartment buildings, façades, roofs, steel structures and historic buildings. Combining design and supervision helps us understand the whole process, from the first measurements to the final report and handover.
Related articles
Manufacturer and regulatory information
- Leica DISTO S910: manufacturer’s product information
- Leica S910 FAQs: measurement setup and accuracy
- Slovenian Building Act (GZ-1)
Digital measurements in everyday engineering
Laser measuring technology is more than an equipment upgrade. Used with appropriate checks, it provides a practical basis for reliable engineering work.
At XPLAN, we use these methods in PZI design, construction supervision and measurement checks to support quality, transparency and professional decision-making.