28 Application pertaining to 88' Rapid Visual Screenings of Buildings for potential Seismic Hazards
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概要
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The Rapid Screening Procedure (RSP) utilizes a methodology based on "Sidewalk survey" of a building and a Data Collection From which an inspector completes based on visual observation of the building. The Data Collection Form includes space for sketches and photograph of the building as well as pertinent earthquake safety related data (Fig. 1) The methodology begins with indentifying the primary structural lateral road resisting system and materials of the building. Basic Structural Hazard Scores for various building types are provided on the form (Fig. 2) and the inspector circles the appropriate one. [Figure] Fig.1 Then the inspector modifies this Basic structural Hazard Score by adding or sub str〓cting Performance Modification Factor (Fig. 3), which relate to significant seismic-related defects the inspector may observe in order to arrive at a final Structural Score S. The Basic Structural Hazard Score, Performance Modification Factors and final Structural Score S all relate to the probavility of the building sustaining major Lifethreating structural damage. [Figure] Fig. 2 Final S Scores typically range from 0 to about 6, with higher S Scores corresponding to better seismic performance. If building has an S "score" of 2 or less, it should be investigated by a professional engineer experienced in seismic design. This procedure is meant to be the preliminary screening phase of multi-phase procedure for identified by this procedure as potentially hazardous must be analyzed in more detail by a professional engineer experienced in seismic design. Because the rapid visual screening is designed to be performed from the street without benefit of entry to the building. This method has developed by the Federal Emergency Management Agency (FEMA) awarded the Applied Technology council (ATC) a 1 year contract in April 1987. [Figure] Fig. 5 first story, and beams of second floor [figure] Fig.3 [figure] Fig. 6 columns and walls in second story, and beams of third floor [figure] Fig. 7 columns and walls in third story, and beams of fourth floor [figure] and walls in penth- beams of penthouse and chimney [figure] Fig. 5 first story, and beams of second floor [figure] Fig. 8 columns and walls in fourth story, and beams of roof floor
- 社団法人日本建築学会の論文
- 1995-02-17