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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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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.

It revises the nonlinear dynamic procedure and changes provisions for steel and concrete columns, as well provisions as for unreinforced masonry. Keyword s Codes and Standards;Materials;Structural.

Checklists are provided for a variety of building types and seismicity levels in support of the Tier 1 screening process. Seismic Evaluation and Retrofit of Existing Buildings System Requirements for Viewing this Course.

It also discusses the limitations of Tier 2 and pros and cons of Tier 2 versus Tier 3. 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 force-controlled actions. Procedure and details of Tier 1 screening procedure has been presented in a prior evaluation. Evaluation requirements Performance objectives Seismic hazard level Level of seismicity As-built information Common building type Part 3: ASCE Seismic Evaluation and Retrofit of Existing Buildings is rapidly becoming the main standard being used for seismic evaluation and retrofit of existing buildings.

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The standard presents a three-tiered process for seismic evaluation according to a range of building performance levels by connecting targeted structural performance and the performance of nonstructural components with seismic hazard levels.

Seismic Evaluation and Retrofit of Existing Buildings () | ASCE

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. The webinar discusses in detail the evaluation requirements, performance objectives, seismic hazard levels, on-site investigation requirements, and other steps of a Aece 2 and Tier 3 procedure.

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 cold-formed steel; architectural, mechanical, and electrical components and systems; and seismic isolation and energy dissipation systems.

The systematic procedure, applicable to any building, sets forth a methodology to evaluate the entire building in a rigorous manner.

Seismic Evaluation and Retrofit of Existing Buildings (41-17)

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.

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However, it includes considerable changes and improvements over the predecessors.

A Tier 1 screening procedure is usually carried out first to quickly identify potential structural deficiencies, after which a detailed Tier 2 evaluation can be performed focusing on those deficiencies. This webinar provides a brief introduction to ASCEfollowed by a detailed presentation about Tier 2 deficiency-based evaluation procedure, and Tier 3 systematic evaluation procedure.

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: 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.

Many building officials and jurisdictions have either adopted this standard or in the process of reviewing and adopting it.