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EARTHQUAKE ASSESMENT DEA

প্রজেক্ট সারসংক্ষেপ

     

After the tragic accident of the garment workers’ company, retailers and NGOs have joined. The “Alliance for Bangladesh Employee Protection” (North Yankee retailers) “Accord Offerings and Detail Engineering Assessment (DEA) Building Safety in Bangladesh” (European retailers).

Twenty-two garments were inspected and classified according to bilateral and alliance conditions. If a primitive assessment seems good, the Engineers Comprehensive Engineering Assessment (DEA) suggests. That, in this case, the vesting authority should appoint an engineering house. Which can perform a small print and complete analysis of the building?

According to the “Detailed Engineering Assessment (DEA) Guidance”, a comprehensive engineering assessment (DEA). It may be a structural engineering inquiry and a report on the building structure. A Detail Engineering is required once a building structure has sufficient information and support for structural protection.

The key to the proper and sparing supply of advanced engineering solutions is the ownership of our customers. The full understanding of their problems. We have sufficient internal resources to manage a diversified portfolio of style and extensive engineering. Everything we do brings together top quality, innovative solutions, and comes lessons learned from the past.

There is an additional field of Detail Engineering Assessment and project management professionals, including styles. Project engineering, project management, and construction engineering and technical backgrounds. It helps the nation meet customer expectations regarding quality, safety and time. Come to the Brownfield and Greenfield surveys for the project, perform basic and extensive engineering. Our project supports innovative, top quality and safe work practices to maximize maximum cost at the lowest bit level.

      


                DEA Steps:

  • ✔️ Prepare As-built Architectural+Structural drawing, if not available already. The as-built drawing shall show:
    • The structural, non structural elements with dimensions at all levels, foundations and framing on plan, sectionand elevation.
    • Cross-sectional drawings showing reinforcements in foundations, columns, beams, slabsetc.
  • ✔️ If as-builtdrawings are available–verify if it truly represents the structure.
  • ✔️ As-builtdrawing shall be prepared/checked as per Alliance standard 8.19and/or8.20.
  • ✔️ Scanning of rebars in main structural elements of lower tiers (SeeAPD.5) to confirm as-built condition.
  • ✔️ Arrange confirmatory soil test(2/3borings)
  • ✔️ Spot check of foundation by excavation, if necessary
  • ✔️ Identify causes of any physical distress, dampness or any other abnormalities and suggest remedial measures.
  • ✔️ Work on specifici tems of concern identified by the QAF in the initial structural assessment report
  • ✔️ Identify any overloading, additions, extensions, presence of water tanks, towers. Study their effect on the structure and suggest remedial measures.
  • ✔️ Arrange for core test by taking 4 Nos. 4in. cores (see details in APD.5,D.17) to assess insitu strength. Use ACI 562 to find 𝒇′𝒆𝒒 to be used in design checking.
  • ✔️ Prepare structural model as per As-built drawing using appropriate software by following the standard practice and building code.
  • ✔️ Obtain reliable data on steel grade or arrange testing of steel rebar (if possible) or assume 40grade conservatively for using in all analysis/design adequacy.
  • ✔️ Use loading and Load factors as per standard (NTC/Alliance)
  • ✔️ Check strength and serviceability requirements as per BNBC-2006
  • ✔️ Make recommendation(s) based on results of DEA–including restriction of loading, restriction on vertical extension.
  • ✔️ In case of deficiency in structural integrity of the structure(s), appropriate retrofitting scheme is to be designed.
  • ✔️ Prepare Load Plan and arrange posting of load plan and approve it.

DEA Deliverables:

  • ✔️ Approved As-built structural architectural drawings.
  • DEA Report with following items:
  • ✔️ Highlight any variation between as built and designed structure (if known) .
  • ✔️ Results of testing for strength and materials .
  • ✔️ Results of geotechnical investigation.
  • ✔️ Details of loading, inputs and results of computer modeling
  • ✔️ Commentary on adequacy/inadequacy of elements of the structure
  • ✔️ Schedule of any required retrofitting required for safety or safe performance of structure
  • ✔️ If applicable, retrofitting scheme design with detail working drawings and design assumptions/notes
  • ✔️ Approved Load plans.

Our Dea Process

    Detail Engineering Assesment (DEA)
  • 1. Assesment Procedure
  • 2. Resource Management
    Assesment Procedure
  • (i) Physical Observation
  • (ii) Investigative Studies
  • (iii) Inferences
  • (iv) Streaming Measures
  • (v) Concluding Remarks
    • (i) Physical Observation:
    • ✎ Any sign of settlement
    • ✎ Any sign of distress in any key structural elements
    • ✎ Any kind of dampness/standing water.
    • ✎ Any kind of corrosion.
    • ✎ Any kind of twisting/rupture/ sagging in the structural members.
    • ✎ Any other defects in the any structural elements.
    • ✎ Current loading condition in the structure (at each floor)
      (ii) Investigation Studies
    • ✎ Dimensional measurement of structural members
    • ✎ Testing:
      • 1. SDT: Semi-Destructive test to access of in-situ concrete in RC footings, Columns, Beams and slabs
      • 2. NDT: Semi-Destructive test to access of in-situ concrete in RC footings, Columns, Beams and slabs
        • Ultrasonic pulse velocity test on RC columns and beams
        • Rebound Hammer test on RC slabs
      • 3. Cover meter studies to map the disposing and dia of peripheral rebars in RC members
      • 4. Theoretical analysis to verify the structural adequacy of existing members for present level loading


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