PORR saves 94 % time with line markings [Case Study]

With SitePlan’s digital utility marking, PORR was able to significantly shorten construction time on a district heating project.

Line markings are a recurring task in civil engineering that can take up an enormous amount of time and resources - especially if you are still working with paper plans, tape measures and string.

The problem: analog processes at PORR

• Elaborate: Two people are often busy for several hours transferring pipe runs from paper plans into reality.
• Prone to errors: Unclear orientation can lead to deviations and even damage.

Expensive: The more time and personnel are tied up, the higher the costs - and this for an activity that occurs several times in almost every project.

The solution: Digital line marking with SitePlan

With georeferenced PDF plans and one GNSS antenna can be used to mark existing pipes precisely on site in just a few minutes.

This is how it works:

1. Upload and georeference PDF plan in SitePlan - regardless of whether it is a division plan, line plan or implementation plan.
2. Connect smartphone + GNSS antenna - for cm-precise positioning.
3. Navigate directly in the plan - the app shows your exact position in the PDF map.
4. Mark line - and that's it.

Practical example: PORR on a district heating project

An experienced PORR polisher used SitePlan to mark the pipes and the asphalt cut of a section in just a few minutes. 15 minutes - instead of conventionally with two people for two hours each (240 minutes in total).

This means:

• 94 % Time saving (15 minutes vs. 240 minutes)
• Several hundred working hours saved per year
• 70-80 % Less line damage thanks to better orientation and constant plan availability

"A glance at the SitePlan app, which shows my exact position on the plan, is much quicker than looking at a paper plan. I can quickly see where something needs to be built and where the existing pipes run. It also saves us the time-consuming measuring work with a tape measure and string."

- Reinhold S., Foreman PORR

The result: line marking

Particularly in the case of major infrastructure projects such as the district heating expansion in Wels in Upper Austria, every day of construction progress counts.

 With the digital line marking from SitePlan, PORR:

• Significantly speed up processes on the construction site - Markings are set in minutes instead of hours.
• Using human resources more efficiently - Foremen or supervisors can carry out markings themselves, without additional personnel.
• Closer integration of planning and construction phases - as all participants use the same, updated plans in real time.

Conclusion

• 94 % Time saving
• 70-80 % less cable damage

With SitePlan, PORR has transformed line marking from a time-consuming, error-prone work step into a quick, reliable process. A simple glance at the app replaces the tedious search in the paper plan - saving time and money.