Preceeding subsoil analysis for Alte Wallgasse in Cologne

Interboden New Construction of a Residential and Commerical Building
Alte Wallgasse, Cologne

Period of execution: 2004 - 2005
Excavation pit volume: 11.000 m³

Nature and Scope of the Services Provided:

• Soil investigation
• Planning, tendering and construction supervision of the excavation pit

Special Features

• Excavation pit with hydraulically prestressed inner bracing in the inner city area
• Adjoining acheology / historical structure

Preceeding subsoil analysis for Amprion Power Line

Amprion GmbH

New Construction of a Power Line: Dauersberg-Limburg, Bl. 4124 / Weißenthurm-Sechtem, Bl. 4215 / Rommerskirchen-Sechtem, Bl. 4197

Nature and Scope of the Services Provided:

Preliminary geotechnical report on the entire route

• Description of the different geological units and hydrogeological conditions
• Identification of special features (e.g. mining)
• Development of a soil investigation concept

Soil Investigations

• Geotechnical support and organisation of soil investigations (pile-driving core soundings, pile-driving soundings, large-scale drillings)
• Groundwater level research
• Mining enquiries and research
• Preparation of geotechnical reports for each mast site with foundation recommendations (including load-bearing capacity parameters for bored piles), information on soil profiles, groundwater, drillability classes, soil properties and classes
• Compilation of the results in a summary report

Preperation of Execution

• Tender special civil engineering
• Organisation of explosive ordnance investigations

Construction Supervision

• Geotechnical support of foundation work and special civil engineering measures (raft foundation: approval of excavation pit bottom; Special civil engineering:  Inspection and comparison of the drilled layers with the layers from the subsoil investigations)
• Inspection of site equipment and reinforcement cages
• Compaction controls
• Preparation of soil documentation for each individual mast site

Details:

• Performance period: 2010-2013
• Soil investigations and acceptance tests at more than 200 mast sites
• Support of special civil engineering services (Begleitung der Spezialtiefbauarbeiten (bored piles > 25 m) in various geological units
  

Preceeding investigation of contaminated site for Axa Konrad-Adenauer-Ufer in Cologne

AXA Investment Managers Deutschland GmbH
Konrad-Adenauer-Ufer 21 - 23, Cologne

Demolition volume: 85.000 m³
Excavation pit volume: 27.000 m³

Nature and Scope of the Services Provided :

• Assessment of soil contamination
• Demolition field book
• Soil investigation Planning, tendering and construction supervision of the trades:
  - Deconstruction
  - Excavation pit
  - Water drainage
  - Geothermal energy
  
  Special Features
• Demolition and excavation pit in the inner city area near the Rhine
• Archeology
• Groundwater modelling

Vorausgegangenes Baugrundgutachten bei Basler Securitas in Bad Homburg

Basler Securitas, Bad Homburg
Deconstruction of the administration building and clearing of the building site

Demolition volume: approx. 60.000 m³ enclosed space

Nature and Scope of the Services Provided:

• assessment of soil contamination
• Demolition field book
• soil investigation
• Planning, tendering and construction supervision of the deconstruction
• Construction supervision of the trades:
  - Excavation pit
  - Water drainage
  
  Special Features
• Building project in progress
• Groundwater monitoring

Belval, ESCH-SUR-ALZETTE in Luxemburg: complete disposal of filter dust landfill

Belval, ESCH-SUR-ALZETTE in Luxemburg Complete Disposal of Filter Dust Landfill 

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• Tendering
• Disposal-related investigations and legal waste classification
• Examination and control of the planned disposal channels and the general schedule
• Instruction of the site management in the requirements and handling of the excavation separation as well as the proof of disposal and consignment note procedure
• Control and organization of the disposal measure
• Coordination meetings and coordination between the Contractor, the Client, on-site expert support as well as all involved regulatory authorities in Germany and Luxembourg
• Auditing of accouts

Period of Execution: 2009– 2011

Disposal Volume: 240.000 tonnes

Here you can see a film about this extensive project: Beitrag bei RTL Luxemburg: PISA Reportage

Belval, ESCH-SUR-ALZETTE in Luxemburg: complete disposal of washing tower sludge landfill

Belval, ESCH-SUR-ALZETTE in Luxemburg Complete Disposal of Washing Tower Sludge Landfill

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• Tendering
• Disposal-related investigations and legal waste classification
• Examination and control of the planned disposal channels and the general schedule
• Instruction of the site management in the requirements and handling of the excavation separation as well as the proof of disposal and consignment note procedure
• Control and organization of the disposal measure
• Coordination meetings and coordination between the Contractor, the Client, on-site expert support as well as all involved regulatory authorities in Germany and Luxembourg
• Invoice and supplementary audit

Period of Execution: 2011– 2014

Disposal Volume: 250.000 tonnes

Preceeding investigation on soil contamination for ARGE StoraEnso in Düsseldorf Reisholz

ARGE StoraEnso
Deconstruction of Former Paper Mill in Düsseldorf-Reisholz

Demolition Volume: approx. : 540.000 m³ of enclosed space

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• demolition field book
• Deconstruction and remediation support
• Groundwater monitoring
• Land recycling
• Earthworks supervision

Former Schultheiss-Brewery, Berlin-Spandau
Wasserstadt Berlin GbR

Nature and scope of the services provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Clarifying the task
• Design statics for excavation support
• Approval statics for securing excavation pits

Details:

• Soldier piles with a free wall height of approx. 5,0 m
• Underpinning made of press piles with a free wall height of approx. 3,5 m

Preceding investigation on site contamination  for Europaviertel in Frankfurt

P+B Planen und Bauen GmbH
Europaviertel Frankfurt am Main

Total area approx. 60.000 m²
Former main goods and marshalling yard

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• Excavation pit investigation
• Terrain modelling
• Construction management

Preceding investigation on soil contamination for Ewald Hohr in Cologne

Ewald Hohr Wohnungsbau & Co. KG
Former EAW-Gelände in Cologne-Nippes (former railway repair plant)

Demolition volume: 24.000 m³
Excavation pit volume: 13.000 m³

Nature and Scope of the Services Provided :

Total area approx. 160.000 m²

• Assessment of soil contamination
• Demolition field book
• Subsoil investigation and excavation planning
• Construction supervision of the trades :
  • Deconstruction
  • Excavation pit
  • Special features of soil and soil air remediation
• Remediation plan according to Federal Soil Protection and Containated Sites Ordinance
• Demolition concept
• Soil and disposal management
• Computer-aided development of excavation and refilling plans
• Development of disposal concepts as well as supervisionPeriod of Execution: 1999 - 2010

Preceeding subsoil analysis for Fire Station Equipment House in Neuwied

Community of Associations Asbach
Extension and Conversion of a Fire Station Equipment House, Neustadt/Wied

Nature and Scope of the Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Clarification of the task
• Execution statics for slope protection

Details:

• Sprayed concrete nailing with a total height of approx. 10.0m

Preceeding investigation on soil contamination for Gebrüder Esch (brothers Esch) in Frankfurt

Gebr. Esch Wohnbaugesellschaft mbH
Bockenheimer Landstrasse 25, Frankfurt am Main

Demolition volume: 24.000 m³
Excavation pit volume: 13.000 m³

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• Demolition field book
• Subsoil investigation
• Planning, tendering and construction supervision of the trades
  - Deconstruction
  - Excavation pit
  - Water drainage
  
  Special features
• Demolition and excavation pit in the city centre area

Mory Verwaltungs GmbH
Commercial Building Alexanderstraße / Annagraben, Bonn

Nature and Scope of thre Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Analysis of soil contamination
• Demolition field book
• Clarification of the task
• Design statics for excavation support
• Approval statics for securing excavation pits
• Tender excavation support

Details:

• Beam sheeting with a free wall height of approx. 4.0m
• contiguous bored pile walls using the vdW procedure (double head drilling system)

Development Company Gürzenich-Quartier

Securing an existing building

Supported existing building side view

On behalf of the development company Gürzenich-Quartier, an office and commercial building with 7 floors and underground car park is erected in the centre of Cologne's old town. In order to make this project possible, planning of the deconstruction of the existing buildings and an excavation pit had to be carried out.

The total scope of services provided by Kühn Geoconsulting GmbH consisted of:

• Assessment of soil contamination
• Demolition field book
• Subsoil investigation
• Planning, tendering and construction supervision of the trades:
  • Deconstruction
  • Excavation pit
  • Foundation measures
    • FEM modelling of individual construction stages
    • Measurement monitoring in neighbouring buildings and structures
• Vibration measurement according to DIN 4150 part 2 and part 3 (German Institute for Standardisation)
• High-precision settlement measurement using electronic hose scale
• Inclination measurements of facades using digital tilt meters
• Deformation measurements in the retaining walls using vertical inclinometers
• Geodetic measurement of elevation points
• Dust measurements on the historical "Gürzenich" and filter systems

In the short film shown here, the demolition of the building stock and the construction of the excavation pit are shown. The photos of 2 webcams, which are attached to adjacent buildings, were put together to a time-lapse film.

Special features that had to be taken into account in the course of planning and execution were:

• Adjustments to the planning due to archaeological finds
• Soil improvement by means of unreinforced piles
• Underground tunnel below the foundation base
• Securing existing buildings at risk of structural integrity
• Securing an ancient Roman canal in the excavation pit

Here you can see a time-lapse video of the different construction phases:

The film material was made available to us with the kind support of the Entwicklungsgesellschaft Gürzenich-Quartier.

Preceeding subsoil analysis for Hippodom in Cologne

Hippodom, Cologne

Nature and Scope of the Services Provided:

• Investigation of subsoil/ foundation consulting
• Declaration check for replenishment
• Support of demolition/excavation

Essener Hypothekenbank and HochTief AG
New Construction of a High-Rise Tower Media-Park BTD, Cologne

Nature and Scope of Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Soil contamination survey
• Concept for groundwater protection
• Pile dimensioning
• Pile slab foundation for pre-dimensioning
• Optimization of foundation without piles via modified settlement calculations
• Underpinning structures for securing adjacent structures

Details:

• 150.0m high-rise tower with 3.0m thick floor slab

Preceeding investigation of contaminated soil for Malt House Weissheimer in Andernach

Stadtverwaltung Andernach
Deconstruction Malt House Weissheimer, Andernach

Demolition volume approx. 140.000 m³ enclosed space

Nature and Scope of Services Provided:

• Investigation of contaminated building fabric
• Tender for pollutant remediation
• Tender demolition work

Preceeding subsoil analysis for May Ernst Museum in Brühl

New Construction of Max Ernst Museum, Brühl
Stadt Brühl

Nature and Scope of Services Provided:

• Clarification of Tasks
• Design statics for excavation support
• Approval statics for securing excavation pits

Details:

• Installation of soldier pile wall and free wall height of approx. 6,0 m
• Bpored pile wall with free wall height of approx. 5,0 m
• In-situ concrete underpinning with a free wall height of approx. 2.5m

Preceeding investigation of contaminated soil for MEAG Real Estate Management GmbH in Cologne

MEAG Real Estate Management GmbH
Gustav-Heinemann-Ufer, Cologne Bayenthal

Demolition volume: 30.000 m³
Excavation pit volume: 50.000 m³

Nature and Scope of Services Provided :

• Assessment of soil contamination
• Demolition field book
• Subsoil investigation
• Planning, tendering and construction supervision of the trades:
  - Deconstruction
  - Excavation pit
  - Water drainage
  - Geothermal energy
  - cooling water discharge

Special Features

• excavation pit near the Rhine in the inner city area
• goundwater modelling

AVG Köln
Construction of a 450,000 ton waste incineration plant, composting plant and ancillary buildings

Nature and Scope of Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Survey of soil contamination
• Remediation of soil contamination
• Ground and flood protection concept
• Pile dimensioning
• Construction management

Details:

• Pile foundation with partial displacement piles
• diaphragm wall excavations 17,0m deep
• land recycling

Preceeding investigation on soil contamination for Rheinberg Galerie in Bergisch Gladbach

RheinBerg Galerie, Bergisch Gladbach
LIXXUS Projektentwicklung GmbH & Co

Nature and Scope of Services Provided:

• Detection of contaminated building fabric
• Soil investigation/ foundation consulting
• Investigation on soil contamination
• Declaration check for replenishment
• Tender deconstruction
• Tender and planning of excavation pit
• Shoring planning
• Support of demolition/excavation
• Water drainage
• Health and safety coordinator

Preceeding investigation on soil contamination for Rheinhallen RTL in Cologne

Kölnmesse
New Construction of Rheinhallen (RTL), Cologne

Demolition volume: ca. : 600.000 m³ umbauter Raum

Art und Umfang der erbrachten Leistung:

• Detection of contaminated building fabric
• Building substance assessment (listed facade)
• Remediation support and deconstruction support
• Disposal management for 200,000 m³ of excavated soil
• Clearance measurement of asbestos remediation areas
• Approval planning for dewatering
• Site Management Excavation

New Construction S-Carre, Siegburg
Rubidium Verwaltungsgesellschaft mbH & Co. Vermietungs KG

Nature and Scope of Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Demolition field book
• Clarification of tasks
• Design statics for excavation support
• Approval statics for excavation support
• Tender for excavation support
• Planning of dewatering in the largely watertight trough
• Tender excavation pit

Details:

• Waterproof pit enclosure (Diaphragm wall according to DIN 4126 with free wall height of approx. 8,0 m)
• Soldier wall piling in the ramp area with a free wall height of approx. 5.0m
• SSheet piling as a special solution in the area of trees worthy of protection

Preceeding investigation on soil contamiantion for Saint Gobain in Herzogenrath

Saint Gobain, Herzogenrath

Nature and Scope of the Services Provided:

• Assessment of soil contamination
• Demolition field book
• Planning, tender and construction supervision of the trades:
  • Deconstruction
  • Soil Contamination
  • Backfilling
  • Safety and health coordinator
• Ongoing foundation consulting and earthworks supervision
• Securing newly designed embankments
• Filling concept and monitoring

Details:

• Execution period: 2010 – 2012
• Demolition volume: 500.000 m³
• Tota area: 80.000 m³

WOCON
Stadthaus Gürzenich, Cologne

Nature and Scope of the Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Survey of soil contamination
• Demolition field book and tender
• Clarification of task
• Design statics for securing the excavation pit
• Approval statics for  securing the excavation pit
• Tender for excavation support
• Construction supervision

Details:

• Installation of soldier pile wall with free wall height of approx. 8,0 m
• Apportionment of a district heating pipeline
• U.Bahn superstructure by means of pile foundation

Preceeding subsoil analysis for the coal-fired power station port area in Eemshaven

Coal-Fired Power Station in the Port Aread of Eemshaven

Nature and Scope of the Services Provided:

• Several excavation pits within the port area of Eemshaven
• Evaluation of the subsoil conditions
• Design and approval statics for excavation pit support
• Geotechnical support
• Stability and settlement calculations for construction cranes
• Stability calculations of embankments

Special Features

• Installation of sheet piling with free wal height of approx. 10,0 m, with partly 3 times tie-back retaining wall and bracing
• Dimensioning of the foundation of the local construction cranes (flat foundation / pile foundation)

Preceeding subsoil analysis for  Tacitius Galerie in Cologne

New Construction of Tacitus-Carre, Cologne
Landesentwicklungsgesellschaft LEG Bauen und Wohnen GmbH, Cologne

Nature and Scope of the a Services Provided:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Demolition field book
• Clarification of task
• Design statics for excavation pit support
• Approval statics for excavation pit support
• Tender excavation pit support

Details:

• Installation of soldier pile walls and party contiguous pile wall with free wall height of approx. 4,0 to 6,0 m

Vorausgegangene Untersuchung auf Altlasten bei Westgate in Köln

Victoria Leben Vers. AG und MEAG
Demolition of former Stadtsparkasse (City Savings Bank) and New Construction of "Westgate"

Construction project in the city centre of Cologne
Demolition volume: 100.000 m³
70.000 m³ aboveground
27.500 m³ subterraneous
Excavation pit volume: 35.000 m³

Nature and Scope of Services Provided:

• Assessment of soil contamination
• Demolition field book
• Investigation of subsoil
• Planning, tender, and construction supervision of the trades:
  - Deconstruction
  - Excavation pit
  - Geothermal energy
  
  Special Features
• Use of old basement walls to secure the excavation pit
• Demolition and excavation pit in inner city area
• Archeology
• Groundwater modelling

Vorausgegangene Untersuchung auf Altlasten bei Zentrale Deutsche Leasing AG in Bad Homburg

Zentrale Deutsche Leasing AG, Bad Homburg

Excavation pit volume: 25.000 m³

Nature and Scope of the Services Provided :

• Assessment of soil contamination
• Demolition field book
• Subsoil investigation
• Planning, tender and construction supervision of the trades:
  - Excavation pit
  - Water drainage

Special Features

• Demoition and excavation pit in inner city area
• Groundwater monitoring due to a neighbouring chlorinated hydrocarbons remediation
• Dewatering in healing spring and water protection zone

Abbruch Sprengung Telekom Bonn

Deutsche Telekom AG
New Construction of Headquaters, Bonn

Art und Umfang der erbrachten Leistung:

• Subsoil analysis / geotechnical report according to HOAI § 92/93 (german fee structure of architects and engineers)
• Clarification of task
• Design statics for excavation pit support
• Approval statics for excavation pit support
• Tender Excavation pit support
• Planning of water drainage
• Tender of water drainage
• Construction supervision
• Demolition field book and tender

Details:

• watertight excavation pit enclosure (diaphragm wall with a free wall height of approx. 25.0 m in the high-rise area)
• Installation of soldier pile wall with a free wall hieght of approx. 12,0 m
• Installation of sheet piling in the area of the media channel
• Expert opinions for several tunnel works

Here you can see a small video of the demolition of the old building on the Telekom premises in Bonn: