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M-SILNICE modernizes earthwork documentation with drone surveying

M-SILNICE accelerates earthwork documentation with drone surveying

M-SILNICE introduced drone surveying and AVAG cloud processing from day one on the D35 Krelov–Slavonin highway project, replacing traditional geodetic methods with fast, on-site photogrammetry for earthwork documentation and volumetric calculations. Monthly (and on-demand) drone flights replace several days of manual surveying while giving construction managers the aerial overview needed for quick verification and accurate invoicing.

Website

msilnice.cz

Industry

Highway infrastructure

Challenges

Hilly, undeveloped terrain requiring continuous earthwork monitoring
Regular progress reports with accurate volumetric data for subcontractor invoicing
Windy sections of the site complicating flight planning
Coordinating earthworks across a 3.2 km highway section with multiple structures

Solutions

Using a DJI Mavic 3 Enterprise RTK stored directly on-site for flexible, as-needed flights
Processing data in the AVAG cloud for automated calculations and progress documentation
Allowing construction managers to upload flight data themselves—no external survey crews
Combining drone outputs with selected traditional geodetic methods for full site coverage

Using a DJI Mavic 3 Enterprise RTK stored directly on-site for flexible, as-needed flights
Processing data in AVAG for automated calculations and progress documentation
Allowing construction managers to upload flight data themselves—no external survey crews
Combining drone outputs with selected traditional methods for full site coverage

Results

Monthly and event-based drone flights save multiple days of manual surveying
Approximately 20 GB of data generated per flight, scaled across 12 months of documentation
Centimeter-level spatial accuracy achieved through RTK + ground control points (GCPs)
On-site drone availability enables immediate data capture after key construction stages, keeping work moving without delays

Monthly and event-based drone flights save multiple days of manual surveying
Approximately 20 GB of data generated per flight, scaled across 12 months of documentation
Centimeter-level spatial accuracy achieved through RTK + ground control points (GCPs)
On-site drone availability enables immediate data capture after key construction stages, keeping work moving without delays

Solving a major traffic bottleneck

Every day, 18,000 vehicles pass the Globus hypermarket near Olomouc, creating persistent congestion. The solution was to complete the western bypass connecting Olomouc to the D35 toward Mohelnice and the D46 toward Brno.

Before ground was broken, M-SILNICE began capturing drone images along the 3.2 km section."We’ve been using the drone since the very start. The first images were taken before we figuratively broke ground. I had experience with drone photogrammetry and AVAG from other projects, so this wasn’t new for us," says Michal Horak, Operations Manager Litovel at M-SILNICE.

The route passes through hilly, undeveloped land, with the most demanding stage—connecting the bypass to the D35—scheduled for 2025.

The construction manager flies the drone about once per month, or anytime a major layer or earthwork is finished. Flight data is uploaded immediately to AVAG, which automatically processes volumes for progress reports and invoicing.

The aerial view provides fast, reliable verification against plans, ensuring teams can confirm progress without delays.

Before ground was broken, M-SILNICE began capturing drone images along the 3.2 km section. "We’ve been using the drone since the very start. The first images were taken before we figuratively broke ground. I had experience with drone photogrammetry and AVAG from other projects, so this wasn’t new for us, says Michal Horak, Operations Manager Litovel at M-SILNICE.

The route passes through hilly, undeveloped land, with the most demanding stage, which will connect the bypass to the D35, scheduled for 2025.

The aerial view provides fast, reliable verification against plans, ensuring teams can confirm progress without delays.

Weather flexibility: Flights when the site allows

Keeping the drone on-site eliminates the need to schedule external survey teams and makes weather issues manageable.

Before ground was broken, M-SILNICE began capturing drone images along the 3.2 km section. "We’ve been using the drone since the very start. The first images were taken before we figuratively broke ground. I had experience with drone photogrammetry and AVAG from other projects, so this wasn’t new for us, says Michal Horak, Operations Manager Litovel at M-SILNICE.

The route passes through hilly, undeveloped land, with the most demanding stage, which will connect the bypass to the D35, scheduled for 2025.

The aerial view provides fast, reliable verification against plans, ensuring teams can confirm progress without delays.

“We have several windy spots where we’ve had to interrupt flights. But because the drone is always on the site, it’s no problem—we just fly the next day. When a stage is finished, we can capture the data in minutes and keep construction moving. AVAG isn’t affected by weather at all.”

Michal Horak

Operations Manager Litovel, M-SILNICE

Drone photogrammetry covers all earthworks and selected structural layers, while traditional geodetic tools are used for specialized measurements. This hybrid method ensures complete documentation without slowing the project.

AVAG and drone data deliver centimeter accuracy thanks to the combination of RTK and GCPs, with no limits on file sizes and near-instant initial processing.

Balanced approach: Drones + geodetic methods

AVAG and drone data deliver centimeter accuracy thanks to the combination of RTK and GCPs, with no limits on file sizes and near-instant initial processing.

Compare drone surveying costs to traditional methods

Drone + AVAG

Flying time

1 km in 15–20 minutes (+ GCP setup)

Processing time

Seconds to initiate → outputs in hours

Approx cost.

Only AVAG processing

— vs —

Human workers

Mapping time

2–4 days/month in the field

Processing time

Days for volumetric outputs

Approx cost.

10–15k CZK per day for a small crew

AVAG highlights

High-volume documentation: ~20 GB per flight over 12 months

Centimeter-level accuracy: RTK + GCP-based measurements

Unlimited data capacity: No file size limits

Instant calculations: Initial processing in seconds

“We’re pleased that AVAG is being used on all currently constructed highway sections in the Czech Republic. It’s not only about saving time and personnel because the system delivers centimeter-level accuracy and accepts unlimited data uploads.”

Marek Ruzek

CTO, AVAG Pro

Project details

M-SILNICE

Project name

D35 Krelov – Slavonin, Phase 2

Timeline

02/2024 – 12/2025

Railway line length

3,166 meters

Structures

3 bridges (222m total length), 1 grade-separated intersection, 1 roundabout, 437m noise barrier

Drone model

DJI Mavic 3 Enterprise RTK

Investor

RSD (The Road and Motorway Directorate of the Czech Republic)

Contractor

M-SILNICE a.s.

Application

Make decisions in hours instead of weeks

Turn drone data into action with AVAG. Capture, process, and visualize your site faster than ever.

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Clients

What our clients say

Discover the success stories and testimonials from our satisfied clients who have transformed their workflow with AVAG.

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners

Clients

What our clients say

Discover the success stories and testimonials from our satisfied clients who have transformed their workflow with AVAG.

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners

Clients

What our clients say

Discover the success stories and testimonials from our satisfied clients who have transformed their workflow with AVAG.

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners

With the AVAG application, I can easily share data with colleagues, which reduces project costs. I also appreciate that I can upload my previously processed data into the application.
Milan Hajzler
Construction manager at ŽS OHLA, a.s.
AVAG has significantly simplified our project navigation. The entire team has an overview of the overall situation on site, construction progress, and the volumes of extracted or processed materials. The ability to integrate a model of the object into the project and compare it with the current situation helps us in planning machinery deployment and determining the time requirements for different parts of the project.
Viktor Wofek
Senior Earthworks Worker at A.K.U.P.I. s.r.o.
We use the application for calculating volumes of earthworks as the primary basis for invoicing. It also serves as documentation for construction progress. Our site managers use AVAG as well, allowing them to keep track of daily work. The application saves us time and, consequently, money.
Tomáš Lauwereys
Construction manager at M - Silnice a.s.
Through the AVAG application, I can share construction data with colleagues who don’t have access to specialized programs for viewing photogrammetric data. We have a better overall view of the construction site, can easily calculate earthwork volumes, and generate terrain profiles.
Jakub Šandor
Surveyor at Eurovia CZ a.s.
We are using AVAG for sharing data allowing the end user to utilise the data to its fullest Especially, it allows us to generate profiles and volume calcs. I do love what's been made so far!
Paul Brazill
Survey Technical Manager at QTS Group
AVAG is easy to use and much simpler than having users learn GIS software. We use it for presenting data from smaller drone projects.
Søren Rolin
Senior Specialist at Niras A/S
The AVAG application allows my clients to follow projects and confirm design compliance and quantities.
George Karaolis
Quantity Surveyor at G. Roditis & Partners