Tenders Are Invited For Renovation Of Fan Coolers Iii

The Zollverein Unesco World Heritage Site In Essen Is A Landmark Of The Ruhr Area, A Monument Of Industrial Culture And A Symbol Of The Transformation Of What Was Once The Largest Coal Mine In The World Into An Attractive Location For Culture And Leisure, Education And Business. Today, Zollverein Stands For A Culture Of Remembrance In The Ruhr Area That Creates Identity And At The Same Time For Forward-Looking Location Development. The Site Of The Zollverein Unesco World Heritage Site Covers Around 100 Hectares. Since The Mine Was Closed In 1986 And The Coking Plant Was Closed In 1993, The Buildings And Facilities Have Been Successively Renovated And Prepared For New Uses. The Buildings Are Used As A Museum, Exhibition And Event Halls, Depots, Offices And Studios. The Individual Buildings Have To Meet Very Different Requirements. One Of These Is A So-Called Fan Cooler. It Is A Simple Reinforced Concrete Structure Made Of In-Situ And Exposed Concrete: An Open-Topped Cube With 6 Cooling Areas. These 6 Rooms Are Separated From Each Other With Concrete Walls And Filled With Hordes Of Wood. On The North Side There Is An Approximately 3 Meter Deep Concrete Pool Divided Into 4 Chambers. The Cooled Water Was Collected Here And Returned To The Coking Plants Facilities. The Pool Is The Only Component In The Above-Ground Area That Is Covered With Bricks 1/2 Stone Thick And Half Covered With Wooden Planks. On The East Side, A Steel Staircase With Grating Steps And Platforms Provides Maintenance Access To The Upper Part Of The Wood Trickle Mill. There Are 3 Large Fans With A Diameter Of Approx. 3 Meters In The North And South Facades, Approx. 1M Above The Ground. The Fans Were Accessible Via Maintenance Corridors Made Of Reinforced Concrete Cantilever Slabs. Pools And Cantilever Plates Are Surrounded By Steel Railings. All Structures (Supporting Structure, Stairs, Wooden Tricklework, Fans) Are Severely Damaged And Urgently Require Repair. The Basic Idea Is To Access The Interior Via The Existing External Staircase. After Climbing The Approx. 15 M High Crown Of The Building, The Visitor Is Led Back Down To The Upper Edge Of The Sewage Works Via A Newly Built Staircase Inside The Building. From Up There He Can Look At The Renewed Hordes Of Wood In The 2 Middle Fields.