Seismic Evaluation of Existing Buildings Using ASCE Tier 2 and Tier 3 Procedures (AWO). Group/Site (up to 30 engineers) Member $ E-book (PDF) — Available for Download in the ASCE Library of the Codes and Standards Activities Division of the Structural Engineering Institute of ASCE. (Standard, ) American Society of Civil Engineers-ASCE standard ASCE_SEI _ American Society of Civil Engineers _ seismic evaluation and retrofit.
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A Tier 1 screening procedure is usually carried out 14-13 to quickly identify potential structural deficiencies, after which a detailed Tier 2 evaluation can be performed focusing on those deficiencies.
Tier 3 systematic evaluation Tier 3 scope, limitation, and procedure Tier 3 general requirements Tier 3 data collection Tier 3 analysis methods Tier 3 evaluation outcome Questions. This webinar provides a brief introduction to ASCEfollowed by a detailed presentation about Tier 2 deficiency-based 41-31 procedure, and Tier 3 systematic evaluation procedure.
The deficiency-based procedures allow evaluation and retrofit efforts to focus on specific potential deficiencies deemed to be of concern for a specified set of building types and heights.
However, it includes considerable changes and improvements over the predecessors. The standard presents a three-tiered process for seismic evaluation according to a range of building performance levels by connecting targeted structural 411-3 and the performance of nonstructural components with seismic hazard levels.
The webinar discusses in detail the evaluation requirements, performance objectives, seismic hazard levels, on-site investigation requirements, and other steps of a Tier 2 and Tier 3 procedure. The systematic procedure, applicable to any building, sets forth a methodology to evaluate the entire building in a rigorous manner.
Seismic Evaluation of Existing Buildings Using ASCE Tier 2 and Tier 3 Procedures (AWO)
Checklists are provided for a variety of building types and seismicity levels in support of the Tier 1 screening process.
Procedure and details of Tier 1 screening procedure has been presented in a prior evaluation.
Keyword s Codes and Standards;Materials;Structural. Seismic Evaluation and Retrofit of Existing Buildings This standard establishes analysis procedures and acceptance criteria, and specifies requirements for foundations and geologic site hazards; components made of steel, concrete, masonry, wood, and asve steel; architectural, mechanical, and electrical components and systems; and seismic isolation and energy dissipation systems.
Many building officials and jurisdictions have either adopted this standard or in the process of reviewing and adopting it.
It also discusses the limitations of Tier 2 and pros azce cons of Tier 2 versus Tier 3. Tier 2 deficiency-based evaluation A brief overview of Tier 1 screening procedure Tier 2 scope, limitation, and procedure Tier 2 general requirements Tier 2 condition assessment Tier 2 analysis methods Tier 2 evaluation outcome Part 4: Alternatively, a full detailed Tier 3 systematic evaluation can be chosen either after a Tier 1 and Tier 2 evaluation or directly from the beginning.
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Seismic Evaluation and Retrofit of Existing Buildings () | ASCE
Evaluation requirements Performance objectives Seismic hazard level Level of seismicity As-built information Common building type Part 3: It revises the nonlinear dynamic procedure and changes provisions for steel and concrete columns, as well provisions as for unreinforced masonry. ASCE Seismic Evaluation and Retrofit of Existing Buildings is rapidly becoming the main standard being used for seismic evaluation and retrofit of existing buildings. The seismic evaluation and retrofit process per ASCE consists of three Tiers including, Tier 1 screening procedure, Tier 2 deficiency-based evaluation procedure, and Tier 3 systematic evaluation procedure.
This new edition, which updates and replaces previous editions of ASCE 41, introduces revisions to the basic performance objectives for existing buildings and to the evaluation of adce actions.