Projects
When requirements are particularly complex, we feel most at home. Building projects that present special challenges to other companies are our daily business. Building with Mainka means building safely, as we have proven with countless projects in Germany, the Netherlands, Belgium and Luxembourg. See for yourself!

New construction Gas Terminal Emden
Customer: | Gassco AS |
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Ausgeführte Leistungen: |
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Location: | Emden, Germany |
Order value: | € 28,000,000 |
Core construction time: | 20 months |
Man Hours: | About 190,000 |
- 130,000 m³ excavation
- 10,000 m³ concrete
- 1,200 t reinforcement
- 43,000 m² formwork
- 790 m² facade
- 23,000 m² asphalt

New building Covestro Campus Lot 1, Leverkusen
Customer: | Covestro Deutschland AG |
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Ausgeführte Leistungen: |
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Location: | Leverkusen, Germany |
Order value: | About € 10,400,000.00 |
Core construction time: | 12 months |

New construction Administration and Service Center
Customer: | BP Lingen |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | About € 53,000,000 |
Core construction time: | 18 months |
- Administrative building with plant canteen (about 8,000 m² GFA)
- Fire department with control station and fire department exercise tower (about 6,000 m² GFA)
- Laboratory building (about 2,000 m² GFA)
- Shop building (about 3,500 m² GFA)
- Outdoor area about 30,000 m²

Extension of production building
Customer: | BASF Polyurethanes GmbH |
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Ausgeführte Leistungen: |
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Location: | Lemförde, Germany |
Order value: | € 8,800,000 |
Core construction time: | 19 months |
Man Hours: | About 60,000 |
- 47,000 m³ excavation
- 5,400 m³ concrete
- 850 t reinforcement
- 6,000 m² formwork
- 800 m² WHG storage areas
- 11,000 m² asphalt
- 1,200 m² facade
- 760 m cable trenches
- 2,200 m pipeline construction

Turnkey vertical extension of an existing dispatch hall as a production facility
Customer: | Chocoladefabriken Lindt & Sprüngli, Aachen |
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Ausgeführte Leistungen: |
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Location: | Aachen, Germany |
Order value: | € 15,000,000 |
Core construction time: | 14 months |

Tank depot E 575
Customer: | Rotan GmbH |
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Ausgeführte Leistungen: |
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Location: | Frankfurt / Main, Germany |
Order value: | € 2,200,000 |
Core construction time: | 10 months |
- 5,300 m³ excavation
- 3,000 m³ concrete
- 360 t reinforcement
- 1,400 m² formwork
- 1,600 m² WHG storage areas
- 11,000 full displacement piles
- 500 m² sheet piles
- 3,850 m mono-prestressing strands

Underground refurbishment Coker
Customer: | BP Gelsenkirchen GmbH |
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Ausgeführte Leistungen: |
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Location: | Gelsenkirchen, Germany |
Order value: | € 9,000,000 |
Core construction time: | 18 months |
Man Hours: | About 70,000 |
- 9,500 m³ excavation
- 2,300 m³ concrete
- 150 t reinforcement
- 3,500 m² formwork
- 800 m cable trenches
- 600 m² asphalt
- 3,100m² WHG storage areas

New construction of a cleaning area according to WHG and AwSV (Directive on Handling Substances Hazardous to Water)
Customer: | Ruhr Oel GmbH - BP Gelsenkirchen |
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Ausgeführte Leistungen: |
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Location: | Gelsenkirchen - Horst, Germany |
Order value: | € 5,800,000 |
Core construction time: | 13 months |
- Surface reinforcement according to WHG and AwSV (contamination zone) about 9,500 m²
- Surface reinforcement in ''normal'' asphalt construction (non-contamination zone) about 1,150 m²
- 14 cleaning stalls according to WHG and AwSV with a total of about 1,550 m² surface area
- Rain retention basin HDPE lined with 130 m³ usable volume
- 3-way seperation system in parallel design 90 l/s with downstream pump station
- Media supply of the cleaning area via a newly constructed pipeline bridge

Construction of an air separation plant
Customer: | Linde AG |
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Ausgeführte Leistungen: |
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Location: | Duisburg, Germany |
Order value: | € 2,700,000 |
Core construction time: | 15 months |
Man Hours: | 11,000 |
- 3,300 m² asphalt surfaces
- 2,100 m³ concrete
- 230 t reinforcement
- 700 m² formwork
- 320 m pipeline construction
- 1,300 m² reinforced concrete prefab parts

New construction Automobile Line 3
Customer: | Hydro Aluminium Rolled Products GmbH |
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Ausgeführte Leistungen: |
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Location: | Grevenbroich, Germany |
Order value: | € 24,000,000 |
Core construction time: | 14 months |
Man Hours: | About 23,000 |
- 41,500 m³ excavation
- 23,500 m³ concrete
- 3,250 t reinforcement
- 52,000 m² formwork
- 12,000 m² facade
- 11,000 m² roof seal
- 2,500 t reinforced concrete construction
- 27,500 m² slipform

New construction filling plant RheinRuhr, Plant Family
Customer: | Linde AG |
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Ausgeführte Leistungen: |
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Location: | Marl, Germany |
Order value: | € 6,340,000 |
Core construction time: | 14 months |
Man Hours: | About 57,800 |
- 17,900 m³ excavation
- 8,800 m³ concrete
- 200 t reinforcement
- 3,500 m² formwork
- 4,800 m pipeline construction
- 6,300 m cable trenches
- 14,670 m concrete roadway
- 280 t steel construction

New construction Machine House 6, Extension Supply Canal West
Customer: | KWS Saat SE |
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Ausgeführte Leistungen: |
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Location: | Einbeck, Germany |
Order value: | € 4,000,000 |
Core construction time: | € 4,000,000 |

New construction and extension of logistics building
Customer: | EMP Merchandising HGmbH |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | € 4,300,000 |
Core construction time: | 12 months |
Man Hours: | 5,000 |
- 8,000 m³ excavation
- 2,150 m³ concrete
- 60 t reinforcement
- 3,700 m² asphalt
- 1,700 m² facade
- 730 m² formwork

Turnkey construction of a laboratory building
Customer: | Ruhr Oel GmbH |
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Ausgeführte Leistungen: |
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Location: | Gelsenkirchen-Scholven, Germany |
Order value: | € 14,000,000 |
Core construction time: | 14 months |
Man Hours: | 24,000 |
- 2,500 m³ excavation
- 2,000 m³ concrete
- 300 t reinforcement
- 8,000 m² formwork
- 2,500 m² facade

Conversion MDBU plant - shell
Customer: | Covestro Deutschland AG |
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Ausgeführte Leistungen: |
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Location: | Brunsbüttel, Germany |
Order value: | € 2,900,000 |
Core construction time: | 9 months |

New construction research building 6260 Monheim
Customer: | Bayer Crop Science |
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Ausgeführte Leistungen: |
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Location: | Monheim, Germany |
Order value: | € 8,200,000 |
Core construction time: | 24 months |
Man Hours: | About 114,000 |
- 5,100 m³ excavation
- 3,300 m³ concrete
- 400 t reinforcement
- 6,400 m² formwork
- 2,000 m³ gravel base layer
- 2,400 m² roof surface
- 1,375 m² thermal insulation system
- 1,800 m² facade
- 70 t steel construction

New construction administrative building Zech
Customer: | Zech Ingenieurgesellschaft mbH |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | € 2,200,000 |
Core construction time: | 9 months |
Man Hours: | About 1,100 |
- 935 m³ excavation
- 850 m³ concrete
- 63 t reinforcement
- 3,200 m² formwork
- 140 m pipeline construction
- 776 m² facade

New construction of a logistics center
Customer: | Lehnkering GmbH |
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Ausgeführte Leistungen: |
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Location: | Schönebeck, Deutschland |
Order value: | € 2,700,000 |
Core construction time: | 10 months |
Man Hours: | About 6,000 |
- 12,500 m³ excavation
- 1,500 m³ concrete
- 122 t reinforcement
- 700 m pipeline construction
- 1,000 m² asphalt
- 2,550 m² WHG storages areas

New construction of a production building
Customer: | Bayer HealthCare AG |
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Ausgeführte Leistungen: |
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Location: | Wuppertal, Germany |
Order value: | € 18,000,000 |
Core construction time: | 14 months |
Man Hours: | About 10,000 |
- 11,000 m³ excavation
- 12,000 m³ concrete
- 2,300 t reinforcement
- 23,000 m² formwork
- 25 m pipeline construction
- 1,500 m cable trenches
- 1,200 m² asphalt
- 20,000 m² semi-prefab surfaces
- 48 prefab stair slabs
- 10,000 m prestressed concrete girders
- 1,800 m steel composite supports
- 135 t built-in components
- 450 m² masonry

Turnkey construction of a production plant for technical gases
Customer: | Air Liquide Global E&C Solutions Germany GmbH |
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Ausgeführte Leistungen: |
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Location: | Dormagen, Germany |
Order value: | € 9,100,000 |
Core construction time: | 20 months |
Man Hours: | About 60,000 |
- 6,300 m³ excavation
- 5,700 m³ concrete
- 620 t reinforcement
- 9,250 m² formwork
- 1,050 m² facade
- 1,480 m pipeline construction
- 100 m cable trenches
- 2,800 m² asphalt
- 975 m² WHG storage areas
- 1,420 m² concrete walkways and roads
- 23 t built-in components
- 12,000 m cable
- 1,200 m² ventilation duct

New construction location LVD
Customer: | Landtechnik Vertrieb und Dienstleistungen (LVD) Bernhard Krone GmbH |
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Ausgeführte Leistungen: |
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Location: | Spelle, Germany |
Order value: | € 2,200,000 |
Core construction time: | 8 months |
Man Hours: | About 7,400 |
- 20,000 m³ excavation
- 170 m3 concrete
- 23 t reinforcement
- 2,100 m pipeline construction
- 2,000 m cable trenches
- 5,000 m² asphalt
- 21,000 m² paved surfaces

Partially turnkey new construction of a gas and steam turbine power plant
Customer: | Rhein Energie AG |
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Ausgeführte Leistungen: |
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Location: | Cologne-Niehl, Germany |
Order value: | € 21,000,000 |
Core construction time: | 22 months |
Man Hours: | About 200,000 |
- 39,000 m³ excavation
- 28,000 m³ concrete
- 2,850 t reinforcement
- 19,500 m² formwork
- 1,300 m² facade
- 8,500 m pipeline construction
- 45 cable shafts (FT)
- 6,000 m² asphalt surface
- 50 m² WHG storage areas
- 220 m coolant pipe GFK DN 2000
- 10,000 m³ infill of existing construction pit
- 2,750 m² diaphragm cut-off walls
- 530 m² sheet pile eall construction
- 480 m² Berlin type pit lining

Turnkey construction of a multi-purpose arena
Customer: | Stadt Lingen (Ems) |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | € 16,000,000 |
Core construction time: | 15 months |
Man Hours: | About 45,000 |
- 6,000 m³ excavation
- 6,500 m³ concrete
- 750 t reinforcement
- 18,000 m² formwork
- 2,800 m pipeline construction
- 50 m² WHG storage areas
- 10,500 m² paved surfaces
- 10,000 t gravel frost base layer
- 5,400 m² roof seal

Construction of a natural gas storage facility
Customer: | WINGAS |
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Ausgeführte Leistungen: |
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Location: | Jemgum, Germany |
Order value: | € 12,000,000 |
Core construction time: | 16 months |
Man Hours: | About 23,000 |
- 30,000 m³ excavation
- 7,500 m³ concrete
- 800 t reinforcement
- 2,500 m pipeline construction
- 40 m² WHG storage areas
- 15,000 m² sheet pile
- 1,600 m cable trenches - reinforced concrete prefab parts

Turnkey construction of a logistics center
Customer: | Chocoladefabriken Lindt & Sprüngli GmbH |
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Ausgeführte Leistungen: |
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Location: | Aachen, Germany |
Order value: | € 7,000,000 |
Core construction time: | 9 months |
Man Hours: | About 75,000 |
- 20,000 m³ excavation
- 8,000 m³
- 950 t reinforcement
- 800 m² formwork
- 4,000 m² facade
- 500 m pipeline construction
- 6,500 m² hall floor slabs
- shipping yard
- 1,100 m reinforced concrete prefab girders
- 5,000 m² reinforced conrete prefab wall slabs

Resurfacing B 70, Lingen bypass
Customer: | Lower Saxon State Authority for Road Construction and Traffic Development |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | € 4,200,000 |
Core construction time: | 4 months (in two phases) |
Man Hours: | 12,000 |
- 5,400 m³ excavation
- 84,000 m² asphalt

Extension of production building
Customer: | BASF Personal Care and Nutrition GmbH |
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Ausgeführte Leistungen: |
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Location: | Düsseldorf, Germany |
Order value: | € 950,000 |
Core construction time: | 9 months |
Man Hours: | About 1,700 |
- 500 m³ excavation
- 800 m³ concrete
- 100 t reinforcement
- 200 m² formwork

Turnkey construction of a laboratory building for paints and coatings
Customer: | Evonik Industries |
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Ausgeführte Leistungen: |
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Location: | Essen, Germany |
Order value: | € 4,500,000 |
Core construction time: | 12 months |
Man Hours: | About 53,000 |
- 750 m³ excavation
- 3,300 m³ concrete
- 500 t reinforcement
- 9,900 m² formwork
- 2,500 m³ facade
- 350 m pipeline construction
- 70 m cable trenches
- 970 m² asphalt surface
- 75 m² WHG storage areas
- 30,000 m² fully prefab parts
- 80 m² paved surfaces

New construction of a cell biology technology center
Customer: | Bayer Pharma AG |
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Ausgeführte Leistungen: |
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Location: | Wuppertal-Elberfeld, Germany |
Order value: | € 5,000,000 |
Core construction time: | 26 months |
Man Hours: | About 11,400 |
- 3,300 m³ excavation
- 2,350 m³ concrete
- 250 t reinforcement
- 9,200 m² formwork
- 3,000 m² facade
- 350 m pipeline construction
- 200 m cable trenches
- 4,400 m² asphalt
- 1,100 m² roof sealing work
- 700 m³ gravel
- 470 m² mansonry
- 145 t steel construction
- 500 m handrail
- 1,700 m2 grate

Turnkey construction of a coating plant with head-end technology center and storage area
Customer: | IAB Ionenaustauscher GmbH (LANXESS) |
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Ausgeführte Leistungen: |
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Location: | Bitterfeld, Germany |
Order value: | € 6,400,000 |
Core construction time: | 7 months |
Man Hours: | About 40,000 |
- 6,000 m³ excavation
- 1,600 m³ concrete
- 250 t reinforcement
- 2,300 m² facade
- 1,000 m² formwork
- 3,600 m pipeline construction
- 3,400 m² asphalt
- 240 m² WHG storage area

Turnkey construction of a sales building
Customer: | NKT GmbH & Co. KG |
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Ausgeführte Leistungen: |
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Location: | Cologne-Flittard, Germany |
Order value: | € 8,700,000 |
Core construction time: | 10 months |
Man Hours: | About 170,000 |
- 4,600 m³ concrete
- 450 t reinforcement
- 4,000 m² facade
- 19,000 m² formwork
- 1,700 m² roof surface
- 20 m maximum building height
- 708 displacement piles
- 4,500 m² thermal activation
- 2,500 m² outdoor areas

Canalization and road construction on refinery grounds
Customer: | Ruhr Oel GmbH |
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Ausgeführte Leistungen: |
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Location: | Gelsenkirchen-Horst, Germany |
Order value: | € 1,300,000 |
Core construction time: | 11 months |
Man Hours: | About 22,600 |
- 950 m pipeline construction
- 4,000 m² asphalt
- 40 shafts structures

Turnkey construction of a building complex for cable production
Customer: | NKT GmbH & Co. KG |
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Ausgeführte Leistungen: |
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Location: | Cologne-Flittard, Germany |
Order value: | € 53,000,000 |
Core construction time: | 19 months |
Man Hours: | About 565,000 |
- 100,000 m³ excavation
- 30,000 m³ concrete
- 50,000 m² roof surface
- 55m maximum building height
- 2,600 m³ individual foundations
- 40,000 m² floor slabs (partially with synthetic sheet)
- 27,000 m² outdoor areas (80% in Denisphalt)

Shell construction of a production building for technical plastics
Customer: | TICONA GmbH |
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Ausgeführte Leistungen: |
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Location: | Frankfurt, Germany |
Order value: | € 17,500,000 |
Core construction time: | 8 months |
Man Hours: | About 30,000 |
- 400 m³ excavation
- 29,000 m³ concrete
- 5,400 t reinforcement
- 40,000 m² formwork
- 700 m pipeline construction
- 100 m cable trenches
- 5 stairwells (up to 54 m)
- 6,200 m² slip formwork
- 1,000 m² prefab parts
- 68 t anchor bolts
- 8,000 Lenton reinforcement sleeves

Turnkey construction of a laboratory building
Customer: | Evonik Industries |
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Ausgeführte Leistungen: |
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Location: | Essen, Germany |
Order value: | € 4,500,000 |
Core construction time: | 12 months |
Man Hours: | About 55,000 |
- 3,000 m³ excavation
- 3,000m³ concrete
- 400 t reinforcement
- 5,000 m² formwork
- 4,300 m² facade
- 500 m pipeline construction
- 200 m cable trenches
- 700 m² asphalt
- 3,000 m² fully prefab parts
- 350 m² paved surfaces

Crystal Gas Storage Project
Customer: | EnBW Energie Baden-Württemberg AG |
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Ausgeführte Leistungen: |
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Location: | Friedeburg-Etzel, Germany |
Order value: | € 9,000,000 |
Core construction time: | 5 months |
Man Hours: | About 50,000 |
- 40,000 m³ excavation
- 3,000 m pipes (PP, HDPE and concrete)
- 7,000m cables ducts
- 4,000 m² construction pit sheeting with sheet piles
- 6,000 m³ concrete
- 600 t reinforcement
- 7,000 m² asphalt work
- 3,500 m² water table drawdown

Canalization work
Customer: | Bayer Industry Services GmbH & Co. OHG |
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Ausgeführte Leistungen: |
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Location: | Uerdingen, Germany |
Order value: | € 500,000 |
Core construction time: | 7 months |
Man Hours: | About 7,000 |

Turnkey construction of a refinery
Customer: | Ruhr Oel GmbH |
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Ausgeführte Leistungen: |
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Location: | Gelsenkirchen - Scholven, Germany |
Order value: | € 16,000,000 |
Core construction time: | 15 months |
Man Hours: | About 78,000 |
First, over the course of less than 6 weeks, about 80,000 m³ of topsoil were remeoved and stored in piles. At the same time, work to develop the media infrastructure for the site was started. This included digging a total of 800 m cable trench, which was completely lined with the timber support. For the canalization work, 470 concrete shafts were built. Numerous special structures were erected in prefab construction and also in site concrete. A total of 3,700 m of pipes up to a size from DA280 to DA560 had a total below the federal highway and integrated into the city sewer system at a depth of 8 m.

Shipping pier and tank depot construction
Customer: | Vopak |
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Ausgeführte Leistungen: |
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Location: | Hamburg, Germany |
Order value: | € 2,800,000 |
Core construction time: | 9 months |
Man Hours: | About 12,700 |
For this project, our services encompassed the integration of new infrastructure for loading, unloading and storing organic products into the existing tank depot. The overall building project consisted of 38 individual construction sites within the tank depot, among them larger structures like the truck unloading yard, the extension of the shipping pier for loading and unloading tankers, the railroad tank car unloading yard, pipeline bridges and various pipeline supports.

New construction of a reinforced concrete basin as part of an extension of a water treatment plant
Customer: | Currenta GmbH & Co. OHG |
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Ausgeführte Leistungen: |
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Location: | Leverkusen-Bürrig, Germany |
Order value: | € 3,500,000 |
Core construction time: | 15 months |
Man Hours: | About 12,000 |
- 12,700 m³ excavation
- 4,200 m³ concrete
- 780 t reinforcement
- 8,100 m² formwork
- 950 m pipeline construction
- 190 m cable trenches
- 2,700 m² asphalt
- 2,200 m grounding
- 1,500 m³ gravel
- 650 m² surface protection

Construction of a gas and steam power plant
Customer: | GE Power |
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Ausgeführte Leistungen: |
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Location: | Lingen, Germany |
Order value: | € 24,000,000 |
Core construction time: | 30 months |
Man Hours: | About 288,000 |
- 27,000 m pipe and supply line installation
- 60,000 m³ soil
- 18,000 m³ reinforced concrete
- 2,000 t construction steel
- 320 m pipeline construction
- Size of individual foundations partially in 600 m²

Extension of a steamcracker
Customer: | Linde AG München |
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Ausgeführte Leistungen: |
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Location: | Antwerp, Belgium |
Order value: | € 740,000 |
Core construction time: | 10 months |
Man Hours: | About 8,400 |

Partially turnkey construction of an industrial plant
Customer: | Akzo Nobel Chemicals B.V. |
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Ausgeführte Leistungen: |
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Location: | Delfzijl, Netherlands |
Order value: | € 9,200,000 |
Core construction time: | 11 months |
Man Hours: | About 19,000 |
Over the course of one week, a stair tower of site concrete was built to a height of 38 m using a slipform process. The prefabricated stairs were later inserted from the top with a truck-mounted crane and placed on the consoles. At the same time, concrete work was started for the foundation of a high rack storage facility sized 80 by 36 meters.
After the shell of the service building was completed, fit-out started immediatly. Foundation work for pipeline bridges , tank pits and various smaller components was carried out on an ongoing basis. Futhermore, closely coordinated canalization and pipeline construction work was completed, as were all roads and outdoor areas.