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Darwin MARTINEZ

BUCARAMANGA

En résumé

Mes compétences :
Visual Basic
Social Housing
Quantity Surveying
Microsoft Excel
Microsoft Access
Masonry
Invoicing
Generators
Formwork
Fire Protection
Customs Clearance
Cost Analysis
Civil Engineering
Budgeting
Autocad

Entreprises

  • SAIPEM - Saipem Services Mexico - Mechanical Quantity Surveyor

    2012 - 2015 Project ULSG-1 Pemex: EPC contract for two desulphurization units and two amine regeneration units to be built at the Client's refinery.

    Duties: Working as Mechanical Quantity Surveyor on the side of main contractor, controlling unit price and lump sum subcontracts,
    * Mechanical Subcontracts (USD 11 Million): Piping Fabrication and Erection Subcontracts, Steel Structure Erection Subcontracts
    * Underground Civil, Mechanical Works Subcontracts (USD 5.6 Million)
    * Labor Supply Subcontracts (USD 3.8 Million) ;
    * Subcontracts for Construction Equipment Rental (USD 3 Million)
    * Prepare Bill of Quantities from IFC drawings, subcontract information and engineering.
    * Verify and record quantities installed at workshop, and in field, according to approved QC reports.
    * Evaluate subcontract payments for unit price and lump sum subcontracts, ensuring costs are within budget.
    * Measure and report Project construction progress on Civil, and Mechanical disciplines on CoSMO application to Planning Dept.
    * Produce cost analysis for extra works and review related subcontractor claims.
    * Prepare costing of back-charges to suppliers and subcontractors for missing materials and work reprocesses.
    * Provide budget cost reports and budget estimates as needed by Contract Administrators.

    Achievements:
    * Coordinated Site Quantity Surveyor team, focused on controlling Site Work Subcontracts.
    * Prepared bill items and measured mechanical and civil extra-works in order to claim Change Orders to Client.
    * Supervised and checked data entry consistency of Project direct and indirect done man-hours on COPE application.
  • SAIPEM - Global Petro - Piping Quantity Surveyor

    2009 - 2012 LNG Project GNL3Z ARZEW Sonatrach: Construction of LNG Liquefaction Train with capacity 4.7 million ton/year

    Duties: Working on the side of main contractor in EPC midstream gas project
    * Piping Fabrication subcontracts (USD 42 Million) ;
    * Piping Erection subcontracts (USD 100 Million) ;
    * Fireproofing subcontract (USD 4.5 Million) ;
    * Customs Clearance and Local Transport of Equipment and Materials (USD 9.6 Million)
    * Prepare Bill of Quantities from drawings, subcontract information and engineering.
    * Verify and record quantities installed at workshop, and in field, according to approved QC reports.
    * Evaluate subcontract payments of piping, mechanical, Customs clearance and transport unit
    price contracts, and ensures costs are within budget.
    * Report periodic progress measurement for Piping to Planning Dept.
    * Produce cost analysis for extra works and review related subcontractor claims.
    * Prepare costing of back-charges to suppliers and subcontractors for missing materials and work reprocesses.
    * Provide budget cost reports and budget estimates as needed by Contract Administrators.

    Achievements:
    * Evaluated invoice cost trend and work progress in order to assist in payment forecasts.
    SAIPEM - Global Petro project Services, Arzew, Algeria
  • Saipem - Quantity Surveyor

    Montigny-le-Bretonneux 2009 - maintenant
  • Construcciones E Ingeniería S.A. - Resident Engineer

    2008 - 2009 Project Cogeneration: Pirotubulars Boiler with steam production capacity 180 ton/hour, Sugar Cane Industry.
    Construction of Foundations for Turbo-generators of 10MW and 27MW, Project Building, Cooling Tower, Pipe Racks, and Auxiliary structures

    Duties: Working on the side of civil subcontractor in Sugar Cane industry
    * Prepare Bill of Quantities for structural works based on IFC drawings and project specifications issued by the Client.
    * Plan and organize allocation of required labor, material delivery timeframe, and renting of formwork and equipment timeframe in order to optimize budget and fully accomplish project Schedule.
    * Plan and conduct statistical quality control on structural concrete mixes produced in-site.
    * Assist in proposing solution to construction issues at interdisciplinary meetings with Client.
    * Report to Director Engineer on weekly progress using measured indexes of schedule, cost, quality and safety.
    * Ensure work operations are in compliance with the sugar cane industry and HSE regulation.

    Achievements:
    * Prepared monthly invoice claims including all contract executed quantities.
    * Prepared Change Order claims on extra works required by the Client.
  • Jaramillo Mora S.A. - Structural Resident Engineer

    2007 - 2008 Housing Project Bosque de las Mercedes, Construction area: 8,100.00 m2
    Construction of eight-story towers of apartments, water-supply, sewage and drainage systems, electric network, power plant and transformers, and parking

    Duties: Working on the side of housing project owner
    * Plan and organize allocation of required labor, material delivery timeframe, and renting of formwork and equipment timeframe in order to optimize budget and fully accomplish project Schedule.
    * Coordinate to Engineering Dept the implementation of Design Change Notes for modifications arisen under construction conditions.
    * Report to Director Engineer on weekly progress using measured indexes of schedule, cost, quality and safety.
    * Ensure work activities are done in compliance with HSE regulation.
  • CPA Construcciones Prefabricadas S.A. - Structural Resident Engineer

    2005 - 2007 Precast Concrete Housing Projects. Erection, assembly of multi-story apartment buildings through Camus System of Precast Concrete Elements

    Duties: Working on the side of Prefabrication subcontractor
    * Housing Projects Bonaire, Balcones de Valdepeñas, Torres de Santorino, Taíno:
    372 apartments, 26,114 m2.
    * Plan and develop erection workflow in line with technical procedures and seismic building code NSR2000 (ACI318). ;
    * Push work progress of erection activities, welded joints, electric and sewage piping installation meeting budget and accomplish project schedule delivery dates.
    * Plan and control delivery of prefabricated material, in-site production of cement mortars and structural concrete mixes.
    * Coordinate to Engineering Dept the implementation of Design Change Notes for modifications arisen under construction conditions.
    * Report construction progress, management indexes, coordination to other subcontractors to Project Director and company meetings.
    * Assist in solving client's requirements and undertaking feasibility studies.

    Achievements:
    * Designed precast material request format for daily material stock control.
    * Prepared monthly work cost analysis including labor and renting of equipment.
    * Assisted to standardize the concrete element production process by including technical, logistic details checked in site.
  • Platarrueda Construcciones - Structural Resident Engineer

    2004 - 2005 Social Housing projects. Construction of houses through confined masonry system. Construction of water-supply, sewage and drainage systems, electric network, power plant and transformers, and parking

    Duties: Working for project main contractor Social Interest Housing Projects,
    * Urbanization Altos de la Paz, 62 houses ;
    * Urbanization Los Pinos, 99 houses ;
    * Prepare Bill of Quantities, schedule material, construction equipment requests.
    * Determine suppliers, make purchase orders through database procurement software, and coordinate material, construction equipment deliveries to site.
    * Plan and organize allocation of required labor, material delivery timeframe, and renting of formwork and equipment timeframe in order to optimize budget and fully accomplish project Schedule.
    * Control production in-site for concrete masonry blocks for confined masonry and implement quality management system for construction processes.

    Duties: Working as structures designer for project main contractor
    * Public Social House.
    * Crude Palm Oil Industry. ;
    * Structural design of reinforced concrete structures according to National Building Code NSR-2000 (ACI-318)

    Achievements:
    * Designed QA procedure for the Development and design process, coordination to other processes, verification formats, and implementation on projects.
  • Imetsa Ingeniería De Soldadura - Design Engineer

    2003 - 2004 Duties: Concept and structural design of concrete, steel frame, and steel shell structures according to corresponding codes
    * Three story Industrial building for storage and offices
    * Parabolic Tunnel acoustic insulation, and Steel parabolic footbridge
    * Concept and structure design of steel shells according to API code
    * Drum shell for concrete transport vehicle ;
    * Compressed air tank shell, capacity 500gal, Diesel storage tank shell, capacity 1,000gal

    Career Progression

Formations

  • Universidad Industrial De Santander (Bucaramanga)

    Bucaramanga 2003 - 2003 High Resistance Steels and Selection of Structural Steels for Pieces of Machinery
  • Universidad Industrial De Santander (Bucaramanga)

    Bucaramanga 1997 - 2003 Bachelor of Civil Engineering

    Degree Project: An application of Genetic Algorithms for Optimizing a Structure Shape
  • Instituto Tecnológico Salesiano (Bucaramanga)

    Bucaramanga 1990 - 1995 Bachelors Degree

    National Academic Award "Andres Bello"

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