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DESSAU wins three prestigious Engineering Awards, 03/28/2008
Last night at the gala ceremony for the sixth Grands Prix du génie-conseil québécois 2008, Quebec’s major consulting-engineering awards, Dessau won three awards (Léonards). The ceremony took place at the Montreal Science Centre.
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Our Services

Geotechnique (soil studies)
Road Management
Materials Engineering
Roofing and Waterproofing
Quality - Manufacturing

Quality Management and Processes
Corrosion Engineering
 


Geotechnique

Site planning and preparation

  • Site selection criteria
  • Existing soil improvement
  • Consolidated and controlled fills for ground works  

Spread foundations

  • Ground foundations
    - Allowable bearing capacity
    Settlement analysis 
    - Dynamic stress on foundations
  • Rock foundations
    - Allowable bearing capacity
    - Stability based on rock block' structural analysis (orientation and the rock ilité en fonction de l’analyse structurale du massif rocheux (structural joint orientation and tilt)  

Deep foundations

  • Bearing capacity (static analysis)
  • Settlement
  • Bearing tests
  • Ground and/or rock anchor design  

Slope and fill stability

  • Analysis of stability issues

  • Slope stability analysis in unconsolidated deposits and rock mass

  • Plans and specifications for slope restoration

Retention works

  • Retention works

  • Retaining walls (gravity and anchored)

  • Soil pressure assessment

  • Dikes and dams

Building expertise

  • Foundation cracks

  • Water infiltrations

  • Extraneous vibrations 

Geology

  • Surface cartography and petrography
  • Tunnel and cliff inspection  

Survey procedures

  • Preliminary reconnaissance
    - Photo-interpretation
    Review of available documentation
    Site history and visit
  • Site surveying 
    - On-site test-boring : sub-surface and earth drillings, wells
    Dynamic penetrometer, Nilcon vaine tester, pressure meter
    Visual inspection, description and classification of sampled soils and rocks
  • Lab testing
    Physical, mechanical and hydraulic properties
    Special testing    

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Road Management
 

Road inventory

  • Pavement examination using a multi-functions vehicle
  • Surface conditions survey using numerical imaging
  • Evenness measurement using a class 1 profile meter (ASTM D-950)
  • Tracking measurement
  • Structure bearing capacity measurement  

Strategic planning for road system management

  • Computerized operations system for substructure management
  • Evolution of condition modeling and forecast
  • Economical analysis and budget scenarios
  • Detailed maintenance and rehabilitation program planning and implementation  

Road infrastructure rehabilitation studies

  • Pedological investigation
  • Pavement investigations and laboratory materials analysis 

  • Structural engineering

  • Identification of rehabilitation solutions and technical recommendations

Road rehabilitation project planning and follow-up

  • Site survey and preparatory studies
  • Design and technical specifications for call for tender documents
  • Work supervision
  • Materials quality control during commissioning and laboratory stages 

Specific studies

  • Evaluation of special heavy traffic related damages
  • Behavior study during new rehabilitation techniques
  • Performance project design
  • Life Cycle Cost Analysis  

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Materials Engineering


Existing concrete structures expertise
(structures, bridges, dams, foundations)

  • Direct and repeated visual inspection 
  • Examination 
  • Condition analysis and evaluation 
  • Recommendation for repair  

Consultation for materials selection (for construction and repairs)
(need analysis, formulation, specifications write-up, etc.)

  • Concrete structures (exposed slabs, posts, alles exposées, poteaux, injection grout, etc.)
  • Roads, parkings, access lanes (aggregate, coating) 
  • Mass or support fills, on sensitive soils, etc.  

Work supervision
(quality and quantity appraisal)

  • Factory prefabricated concrete pieces

  • Manufactured granite tiles

  • Structure rehabilitation using concrete, mortar, coated materials, aggregates, etc.

  • Highways, roads, streets, parking

  • Underground infrastructures

  • Crack sealing

  • Road marking

Quality control of in-situ materials
(Specific qualitative inspections, testing and measurements)

  • In situ tests on soil, concrete and asphalt

  • Recommendations

  • Analysis and approval of material compliance certificates

  • Thermocouples installation and readings

  • Anchor testing

  • Steel reinforcement detection

Laboratory standardized and customized tests

  • Concrete, mortar, grout, bricks
  • Cement
  • Asphalt
  • Soils and aggregates
  • Stabilized materials
  • Recycled materials
  • Insulation
  • Membranes
  • Epoxy, etc 

Testing process quality audits  

Metrology
(equipment gauging)  

Quebec Standards Bureau (QSB) certification and concrete facility audits 

Quarry and sandpit assessment  

Expertise on pyrite heave  

Specific industrie-related research projects
(new materials, new protocols, etc.)
 

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Roofing and Waterproofing

Roof management

  • Computer management software
  • Preventive maintenance program
  • Five-year rehabilitation program implementation
  • Collective maintenance program

Inspection and quality control

  • Preliminary inspection
  • Verification of materials technical data sheets
  • Materials quality control
  • Material installation quality control
  • Inspection for guaranty from Quebec’s Master Roofers Association warranty inspection

Investigation – Infiltration/waterproofness inspection 

  • Visual inspection
  • Thermograph inspection 
  • Nuclear hygrometer inspection
  • Resistivity hygrometer inspection
  • Waterproofness inspection  

Laboratory testing

  • Insulating material analysis

  • Membrane analysis

  • Stone analysis

  • Tearproof resistance

  • Asphalt bitumen analysis

Technical assistance and Consulting

  • Design and technical specifications analysis
  • Technical sheets analysis
  • Materials technical consulting

Training

Training course for Quebec’s Master Roofers Association 

 

  • Multilayer and rubber membranes
  • Roof works quality control
  • Single-ply and liquid membranes
  • The worker, a competent team member for quality work
  • The foreman, his role, knowledge and interaction with others

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Quality – Manufacturing

Inspection, supervision and follow-up (in factory and on site)

- Heavy equipment

  • Turbines and alternators
  • Powerplant equipment
  • Craness

- Mechanics and structures

  • Bridges

  • Engineering structures

  • Industrial and building structures

  • Pressure and storage tanks

  • Towers (tubular and lattice) 

- Electricity

  • Power equipment
  • High and medium voltage equipment
  • Automation, control and protection equipment
  • Electric generating sets
  • Lightning impact testing

- Non-destructive testing (NDT)

  • Visual inspection of welded joints (CSA W178)
  • Ultrasonic inspection
  • Radiographic inspection (gamma and X ray)
  • Magnetoscope inspection (dry and humid)
  • Dry penetrant testing
  • Eddy current

- Treated wood inspection

- Metallurgy expertise and lab testing

- Covering materials control

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Quality Management and Processes 

  • Quality management system implementation or upgrade (ISO 9000, TL 9000, ISO 17025 and OHSAS 18001)
  • In-house, custom quality training programs, etc.
  • Process development and related literature
  • Quality systems audit (ISO 9001, ISO 17025)
  • Quality manuals evaluation
  • Specific quality program preparation and management
  • Internal quality assessors and coordinators training
  • OHSAS 18001 (Occupational- Health and Safety Program implementation).

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Corrosion Engineering


Technical assistance and consultating

- Analytical lab

  • Assessment of material electrochemical behaviour (life cycle estimate)

  • Electrochemical material ageing

  • Materials selection

  • Anodic metal control

  • Covering material behaviour assessment

  • Metal anodic control assessment

  • Soil, concrete and aggregate corrosion assessment

  • Chloride level analysis

  • Carbonation survey

  • Resistivity assessment

  • pH assessment

  • Pipe condition assessment using ultrasound thickness surveys

  • Pitting depth assessment

  • Graphitization assessment

  • Corrosion tubercle assessment

  • Dezincification assessment

Corrosion related expertise, diagnostic and survey

  • Assessment of corrosion status, corrosion potential surveys

  • Assessment of corrosion speed using  linear polarization

  • Application of ECDA (External Corrosion Direct Assessment

  • Evaluation of the environment’s aggressive condition using in-situ resistivity surveys

  • Half-cell testing

  • Coating material condition assessment using DCVG

  • Stray-current corrosion investigations

  • HVAC and HVDC influence

  • Expertise in cathodic protection

Corrosion-protective serving system design

  • Cathodic protection system
  • Anodic protection system

Corrosion-protective serving system turnkey installation and rehabilitation services

  • Cathodic protection system
  • Anodic protection system

Saline mist testing

Work inspection and supervision

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