Transcription of SEISMIC LOAD ANALYSIS - Memphis
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SEISMIC Load ANALYSIS 9 - 1 Instructional Material Complementing FEMA 451, Design ExamplesSEISMIC LOAD ANALYSISS eismic Load ANALYSIS 9 - 2 Instructional Material Complementing FEMA 451, Design ExamplesTopic Objectives Selection of method of ANALYSIS Description of ANALYSIS techniques Modeling considerations System regularity Load combinations Other considerations Drift computation and acceptance criteria P-delta effectsSeismic Load ANALYSIS 9 - 3 Instructional Material Complementing FEMA 451, Design ExamplesLoad ANALYSIS Procedure(ASCE 7, NEHRP Recommended Provisions)1.
• Provide 5% damped firm rock (Site Class B) spectral accelerations S s and S 1 or 2% in 50 year probability or 1.5 times deterministic peak in areas of western US • Modified for other site conditions by coefficients F v and F a to determine spectral coefficients S MS and S M1 • Divided by 1.5 to account for expected good performance.
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