Special civil engineering

Consulting

Every successful project starts off with a vision and a skilled partner. Our employees will listen to your requests, offer personalised advice, and conduct an individual needs analysis for your project. We pay particular attention to sustainability aspects such as reducing CO2 and choosing environmentally friendly methods. We will find the best solution for you. As a full-service provider, we can offer all the technical processes involved in special civil engineering on a neutral basis. You will be fully informed about the requirements, the technical possibilities and the associated economic aspects. This creates a sound basis for making decisions.

Planning

From the final design stage to building permission applications – we will handle the entire planning process for your project. We optimise technical details and costs to create a sound basis for our cost estimation. We offer alternatives and customised proposals, with a particular focus on sustainability. We use 3D visualisations to develop practical and buildable solutions. It enables us to depict complex details in an easily comprehensible format. We can also support you in obtaining sustainability certification and offer you security in terms of planning and feasibility. We provide you with scheduling and cost transparency at all times.

Construction

After you have signed the contract for the detailed quotation, including a schedule and interface list, our experienced specialist personnel will successfully implement your construction project with our in-house special equipment. Careful work preparation and execution planning are ensured at the start of construction. Quality assurance is guaranteed by our extensive measuring technology. Our certified quality management provides clear, standardised processes in line with LEAN management, as well as professional, punctual execution. With our wide range of technical capabilities, we can adapt to individual conditions on the construction site swiftly and without delay at any point in time. This guarantees that we hand over your project on schedule. A dedicated, knowledgeable contact person will be on hand to guide you from the initial idea through to completion. We will support you and ease your workload throughout the entire execution with our expertise and effective, targeted communication.

In addition to the carrying out the individual sub-project involved in enclosing construction pits, we also offer the complete construction of excavation pits. As a general contractor, we handle complex construction projects and coordinate tasks that go beyond the scope of special civil engineering.

This includes all aspects of construction pit work. You can benefit from our decades of expertise in special civil engineering and our problem solving skills, especially when it comes to challenging construction tasks.

We offer the following methods for creating construction pits:

• Construction pit walls
• Ground anchors
• Sealing slabs
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

The cost effectiveness of a stabilisation measure and the amount of work involved always depend to a large extent on the local boundary and planning conditions and the technology used. These boundary conditions essentially determine the manufacturing grid of the stabilising elements used. As a provider of subsoil improvement measures, we are your single, go-to source for processes tailored specifically to your construction project. As such, we provide the optimal solution in terms of technology and cost-effectiveness.

We offer the following soil improvement services:

• Soil mixing
• Ground freezing
• Compaction grouting
• Jet grouting
• Columns encased in geotextiles
• Vibro compaction
• Vibro replacement
• Stump-Franki S³ stabilising column system
• Vibro in-situ concrete columns
• Replacement in-situ concrete columns
• Solidification injections
• FDP piles (non-reinforced concrete piles)
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

As a general contractor, we handle complex construction projects and coordinate tasks that go beyond the scope of special civil engineering. This includes all aspects of construction pit work.

We offer the following methods for creating sealing slabs:

• Deep jet-grouted sealing slabs
• Soft gel injection slabs
• Mid-height jet-grouted sealing slabs
• Underwater concrete floor slabs
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

When it comes to complex construction works that are affected by foundation issues, our focus is on safety and cost-effectiveness. Our broad portfolio of technical capabilities allows us to tailor our services to the specific conditions of your construction site.

We offer the following methods for foundations:

• Bored piles
• Full displacement piles
• Driven piles
• Micropiles
• Jet grouting method
• Subsoil improvement
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

With our special equipment, Stump-Franki has no problem retrofitting foundations even at low construction heights and under power lines or bridges. Our experience and the detailed preparation, planning and coordination of various trades have made us an expert in complex tasks in this area for many years.

We offer the following methods for reinforcing foundations:

• Bored piles under restricted heights
• Atlas piles under restricted heights
• Steel pipe piles
• Micropiles
• HDP piles/ductile-driven piles
• Jet grouting
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

One particular challenge is construction projects involving existing structures, as the planning documents for existing structures do not always correspond to reality. This makes implementation more difficult and requires agile planning. Our broad portfolio of technical capabilities allows us to tailor our services to the specific conditions of your construction site and thereby ensure handover on schedule. As an experienced partner, we can provide you with expert support and ensure successful completion of your project.

We offer the following restoration services:

• Jet grouting
• Injections
• Masonry restoration
• Micropiles
• Jetcrete
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

As a technology leader in special civil engineering, we can carry out all of the necessary work. We prepare specific, coordinated procedural instructions to ensure the high quality and success of the project.

We offer the following underpinning services:

• Jet grouting (JGM/HPI)
• Micropiles
• Conventional underpinning with underpinning walls in accordance with DIN 4123
• Underpinning with ultra-fine cement grouting
   

Interested in our methods? All of our methods simply explained: How special civil engineering works.

Measurment technology services:

• Vibration measurement
• Fibre optical measurement
• Integrity measurement
• Load testing
• Sound measurement
• Dust measurement

Ensuring quality requirements is a top priority at PORR. This is also evidenced by our certificates and approvals. In order to always be up to date, our certificates and approvals are reviewed and updated on a regular basis through external audits and independent certification companies.

In addition, independent companies, such as Deutsche Bahn AG, confirm our skills and actions through prequalifications and special recognition.

All certificates, approvals and memberships can be found here: