Initial Inspection - Structural

Document Review:

During this part of inspection, auditor checks the available documents in presence of factory Engineer/representative to check the availability of documents based on which the Structural Integrity Assessment will proceed. Following key documents shall be reviewed:

  • Approval plan,
  • Occupancy certificate,
  • Full set of original Architectural drawings/as built Architectural drawings
  • Full set of original Structural drawings/as built Structural drawings,
  • Geotechnical report,
  • Machine lay out plan,
  • Floor load plan,
  • Previous assessment report (if any),
  • Material test report etc.

Physical Observation:

During this part of assessment, auditor shall travel every corner of the factory and collect data regarding nonconformities present in all key structural elements and collect photographic evidence as well. The major issues which shall be covered in the physical observation are as follows:

  • Structural system
  • Verification of as built condition with existing structural/ architectural drawing.
  • Load path and load carrying system
  • Major/progressive distress in key structural element
  • Foundation settlement
  • Dampness, effloresces, standing water on roof
  • Expansion joint condition (if any)
  • Existing loading condition
  • Identification of overloading area
  • Condition of façade system
  • Undocumented horizontal/vertical extension
  • Availability of posted load plan and load marking

Initial Inspection - Electrical

Document Review:

During this part of inspection, auditor checks the available documents in presence of factory Engineer/representative to check the availability of documents based on which the Electrical Integrity Assessment will proceed. Following key documents shall be reviewed:

  • Approval Electrical plan,
  • Occupancy certificate,
  • Full set of original Electrical drawings/as built Electrical drawings
  • Full set of original Structural drawings/as built Structural drawings,
  • Geotechnical report,
  • Machine lay out plan,
  • Floor load plan,
  • Previous assessment report (if any),
  • Material test report etc.

Physical Observation:

During this part of assessment, auditor shall travel every corner of the factory and collect data regarding nonconformities present in all key Electrical elements and collect photographic evidence as well. The major issues which shall be covered in the physical observation are as follows:

  • Electrical system
  • Verification of as built condition with existing Electrical / architectural drawing.
  • Load path and load carrying system
  • Major/progressive distress in key structural element
  • Expansion joint condition (if any)
  • Existing loading condition
  • Identification of overloading area
  • Condition of façade system
  • Undocumented horizontal/vertical extension
  • Availability of posted load plan and load marking

Initial Inspection - Fire

During this part of assessment of any fire and life safety inspection is to:

  • Approval Electrical Fire plan.
  • Machine lay out plan.
  • Identify building code violations.
  • Checks the majority of uncontrolled fires.
  • Checks building owners comply with the permit process.
  • Federal laws, state/provincial laws, and local ordinances.
  • Checks legislation that designates and authorizes fire and life safety.

Detail Assessment - Structural

Detail Engineering Assessment (DEA):

Detail Engineering Assessment (DEA) process as per Alliance standard: Essential Information and steps for Detail Engineering Assessment (DEA)

DEA Steps:

  1. Prepare As-built Architectural +Structural drawing, if not available already. The as-built drawing shall show:
    1. The structural, non structural elements with dimensions at all levels, foundations and framing on plan, section and elevation.
    2. Cross-sectional drawings showing reinforcements in foundations, columns, beams, slabs etc.
  2. If as-built drawings are available–verify if it truly represents the structure.
  3. As-built drawing shall be prepared/checked as per Alliance standard 8.19 and/or 8.20.
  4. Scanning of rebar’s in main structural elements of lower tiers (SeeAPD.5) to confirm as-built condition.
  5. Arrange confirmatory soil test(2/3borings)
  6. Spot check of foundation by excavation, if necessary
  7. Identify causes of any physical distress, dampness or any other abnormalities and suggest remedial measures.
  8. Work on specific terms of concern identified by the QAF in the initial structural assessment report
  9. Identify any overloading, additions, extensions, presence of water tanks, towers. Study their effect on the structure and suggest remedial measures.
  10. Arrange for core test by taking 4 Nos. 4in. cores (see details in APD.5, D.17) to assess in situ strength. Use ACI 562 to find 𝒇′𝒆𝒒 to be used in design checking.
  11. Prepare structural model as per As-built drawing using appropriate software by following the standard practice and building code.
  12. Obtain reliable data on steel grade or arrange testing of steel rebar (if possible) or assume 40grade conservatively for using in all analysis/design adequacies.
  13. Use loading and Load factors as per standard (NTC/Alliance)
  14. Check strength and serviceability requirements as per BNBC-2006
  15. Make recommendation(s) based on results of DEA–including restriction of loading, restriction on vertical extension.
  16. In case of deficiency in structural integrity of the structure(s), appropriate retrofitting scheme is to be designed.
  17. Prepare Load Plan and arrange posting of load plan and approve it.

DEA Deliverables:

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

Our DEA process:
Detail Engineering Assessment (DEA):

  1. Assessment Procedure
  2. Resources Management

1. Assessment Procedure:

  1. Physical Observation
  2. Investigative Studies
  3. Inferences
  4. Strengthening Measures
  5. Concluding Remarks

a) Physical Observation

  1. Any sign of settlement
  2. Any sign of distress in any key structural elements
  3. Any kind of dampness/standing water.
  4. Any kind of corrosion.
  5. Any kind of twisting/rupture/ sagging in the structural members.
  6. Any other defects in the any structural elements.
  7. Current loading condition in the structure (at each floor)

b) Investigative Studies

  1. Dimensional measurement of structural members
  2. Testing:
    1. SDT:
      1. Semi-Destructive test to access of in-situ concrete in RC footings, Columns, Beams and slabs
    2. NDT:
      1. Ultrasonic pulse velocity test on RC columns and beams
      2. Rebound Hammer test on RC slabs
    3. Cover meter studies to map the disposing and dia of peripheral rebar’s in RC members
  3. Theoretical analysis to verify the structural adequacy of existing members for present level loading

c) Inferences

  • Inferences based on the above investigative studies.

d) Strengthening Measures

  • Retrofitting Scheme

e) Concluding Remarks

  • Recommendation(s) based on results of DEA–including restriction of loading, restriction on vertical extension.

2. Resources Management:

Six members required in each DEA team and they will divide into four groups under one team leader. 

Group A:

Member:

  1. Structural engineer
  2. CAD operator

Responsibilities:

  1. Dimensional measurement of structural members.
  2. Prepared as-built Structural drawing.

Group B:

Member:

  1. Structural engineer.
  2. Two labors from client end.

Responsibilities:

  1. Semi-Destructive test (core samples) to access of in-situ concrete in RC footings, Columns, Beams and slabs.
  2. Ultrasonic pulse velocity test on RC columns and beams.

Group C: 

  1. Team leader
  2. Structural engineer

Responsibilities:

  1. Cover meter studies to map the disposing and dia of peripheral rebar’s in RC members.
  2. Rebound Hammer test on RC slabs.

Detail Assessment - Electrical

Details Electrical Engineering Assessment:

  1. Prepare As-built Electrical drawing, if not available already. The as-built drawing shall show:
    1. The Electrical elements with dimensions at all levels, foundations and framing on plan, section and elevation.
    2. Cross-sectional drawings showing all Electrical equipment and elements etc.
  2. If as-built drawings are available–verify if it truly represents the structure.
  3. Review and modification of As‐built single line electrical diagram.
  4. Review and modification of electrical layout design.
  5. Develop and implementation of NFPA 70 electrical safety program
  6. Checking the electrical wiring size according to the capacity of circuit breaker.
  7. Clear marking of all distribution board according to the BNBC and ACCORD standard
  8. Assessment of each load management scheme
  9. As-built drawing shall be checked as per Following:
    1. Bangladesh Electricity Act. 
    2. IEE wiring Regulation (17th edition) BS: 7671 2008 including all parts. 
    3. British Standards (BS). 
    4. National Electrical Code of USA with necessary modifications for Bangladesh.
    5. ISO 50001 standard for Energy management System.  
    6. International Electro technical Commission(IEC) specifies the standards related   to energy production and  distribution, electronics, magnetic  and  electromagnetic,  electro acoustics, multimedia  and  telecommunication, as well as associated general disciplines such as terminology and symbols, electromagnetic compatibility measurement  and performance, dependability, design and development, safety and  the environment.
  10. Prepare Load Plan and arrange posting of load plan and approve it.
  11. Approved As-built Electrical drawings.
  • DEA Report with following items:
    1. Highlight any variation between as built and designed electrical structure (if         known)
    2. Results of testing for strength and materials.
    3. Results of geotechnical investigation.
    4. Details of loading, inputs and results of computer modeling.
    5. Approved Electrical Load plans.

Detail Assessment - Fire

Details Assessment for Fire:

  1. Prepare As-built Electrical and fire drawing, if not available already. The as-built drawing shall show:
    • The Electrical elements with dimensions at all levels, foundations and framing on plan, section and elevation.
    • Cross-sectional drawings showing all Firing equipment and elements etc.
  2. If as-built drawings are available–verify if it truly represents the Firing structure
  3. Review of As‐built single line electrical diagram.
  4. Review of electrical layout design.
  5. Develop and implementation of NFPA 70 electrical safety program
  6. Checking the electrical wiring size according to the capacity of circuit breaker.
  7. Clear marking of all distribution board according to the BNBC and ACCORD standard
  8. Assessment of each load management scheme.
  9. Review of all fire related drawing according NFPA 14, 22, 72, 80, 92,101,110 and BNBC 2006.
  10. Prepare posted of occupant load for every assembly and production floor.
  11. Design the required rated construction barrier according to BNBC and ACCORD standard.
  12. All other fire related works according to BNBC and ACCORD standard.
  13. Cost analysis for total fire safety system.
  14. Detail of installing a stand pipe system at required location.