People. Values. The future

We work for and with People,
respect and live values
and focus on the future.

Sewer renovation
Special construction method in mining tunnelling

»Following fundamental preliminary investigations, we planned an alternative to the open construction method with the dismantling of all supply lines. The special construction method chosen is more economical, more sustainable and caused only minor disruption to traffic.«

Otfried Heineck

Sewer renovation
Special construction method in mining tunnelling

»Following fundamental preliminary investigations, we planned an alternative to the open construction method with the dismantling of all supply lines. The special construction method chosen is more economical, more sustainable and caused only minor disruption to traffic.«

Otfried Heineck

Sewer renovation
Special construction method in mining tunnelling

»Following fundamental preliminary investigations, we planned an alternative to the open construction method with the dismantling of all supply lines. The special construction method chosen is more economical, more sustainable and caused only minor disruption to traffic.«

Otfried Heineck

Sewer renovation

Water supply
Refurbishment of drinking water tank with ventilation concept

»We create the basis for clean water from the tap! And plan and coordinate the reorganisation of ventilation and air extraction, the renewal of pipework and fittings as well as the safety equipment for access to the chambers.«

Tobias Dörr

Water supply
Refurbishment of drinking water tank with ventilation concept

»We create the basis for clean water from the tap! And plan and coordinate the reorganisation of ventilation and air extraction, the renewal of pipework and fittings as well as the safety equipment for access to the chambers.«

Tobias Dörr

Water supply

Hydraulic engineering
Irrigation of a historic millrace

»We are creating new habitats for microorganisms by reactivating a millrace in the Taunus. As experts in the field of watercourse renaturalisation, we plan the special structures and water-friendly construction methods that are explicitly suitable for these projects.«

Martin Ponkratz

Hydraulic engineering
Irrigation of a historic millrace

»We are creating new habitats for microorganisms by reactivating a millrace in the Taunus. As experts in the field of watercourse renaturalisation, we plan the special structures and water-friendly construction methods that are explicitly suitable for these projects.«

Martin Ponkratz

Hydraulic engineering

Experience

Ingenieurbüro Ohlsen GmbH operates across regions in major cities, municipalities and rural areas. In close co-operation with a wide range of offices and institutions – with the involvement of external partners with project-related expertise.

Engineering services
Ecological replacement measure for U-Bahn depot east

»The planning of the spring water diversion requires extensive technical implementation drawings: for the historic Entenbach pipework, spring water transfer shafts, pipe jacking, pipe liner renovation process and pumping station.« 

Doreen Schmidt

Engineering services

We shape the future

We are proud of 42 years of infrastructure planning: 40 years of flexible thinking,
networked working and constant learning, for loyal and new customers, with
our partners and the Ohlsen engineering office team.

Transport facilities
Development of lorry access roads industrial area

»We reviewed the performance of the existing transport infrastructure: Towing curves for HGVs, pavement development, signage and marking and drainage. And planned and supervised the final road construction within 5 months.«

Frank Lanfermann

Transport facilities

Specialist areas

We are experts in all specialist areas. The focus is on water supply systems, waste water disposal systems, transport systems and hydraulic engineering.
We provide engineering services in consulting, planning and construction supervision.

Waste water
Pigging shaft for redundant waste water pipe

The pumping station was extended by a »pig chamber« to ensure a functional waste water discharge for 8,000 inhabitants, which reduces deposits in the pipe and energy consumption. A second line will provide double security in future.

Waste water

Development
Complete development of industrial estate on A5 motorway

»As part of the project team, we planned over 2 years in 2 construction phases, taking into account the crossing of a high-pressure gas pipeline: 2 roundabouts with bypass, integration of a recycling centre, water supply, drainage, rainwater retention basin, 3 broadband lines«.

Fabian Döll

Development
Complete development of industrial estate on A5 motorway

»As part of the project team, we planned over 2 years in 2 construction phases, taking into account the crossing of a high-pressure gas pipeline: 2 roundabouts with bypass, integration of a recycling centre, water supply, drainage, rainwater retention basin, 3 broadband lines«.

Fabian Döll

Development

Specialist areas

We are experts in all specialist areas. Thefocus is on water supply systems,
waste water disposal systems, transport systems and hydraulic engineering.
We provide engineering services in consulting, planning and construction control.