Assessment

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

DEA Steps:

• Prepare As-built Architectural +Structural drawing, if not available already. The as-built drawing shall show:
• The structural, nonstructural elements with dimensions at all levels, foundations and framing on plan, section and elevation.
• Cross-sectional drawings showing reinforcements in foundations, columns, beams, slabs etc.
• If as-built drawings are available–verify if it truly represents the structure.
• As-built drawing shall be prepared/checked as per Alliance standard 8.19 and/or 8.20.
• Scanning of rebar’s 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 specific terms 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 in situ 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 adequacies.
• 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.