In this study, the approximate method adopted by ASCE/SEI is evaluated, first qualitatively and subsequently by comparing its predictions against results. Seismic Design Criteria for Structures, Systems, and Components in Nuclear Facilities, ASCE/SEI , Softcover, ISBN: , Stock # . Nov 2, He is currently active in the update to ASCE This latter participation is through the Task Committee on Dynamic Analysis of Nuclear.
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The two standards are performance based and are written to ensure that structures, systems, and components SSCs designed and evaluated in accordance with their provisions meet target performance goals that vary as a function of the seismic design basis. Some design criteria have been removed, simplified, or provided by reference to other codes and standards.
In fact, such a comparison is misleading and inappropriate because the procedures for formulating the performance goals in the two Standards are fundamentally different, namely, performance is judged in ASCE 7 at the system level building ase requires the failure xsce multiple building components whereas performance is judged in ASCE 43 at the component level. This approach can still be used. It also includes a different formulation for the nominal shear stress of unreinforced concrete, which has been updated from that in ACI to ase for the effects of section depth, longitudinal reinforcement ratio, and non-exceedance probability on shear strength required of safety-related nuclear structures.
ASCE 43 – Changes to the Upcoming Revision – Becht Engineering Blog
This change will affect and possible increase the required out-of-plane shear reinforcement of reinforced concrete walls and slabs. The revised Standard delineates between component level and system level inelastic energy absorption factors F m and describes how adjustments to the component level F m factors results in the system level F m factors.
Numerous changes have been made to the chapter on seismic qualification of equipment and distribution systems. The sections on seismic qualification of equipment and distribution systems by Testing and Experience Data and the associated commentary have been revised significantly to emphasize the differences between qualification by test versus qualification by test experience data and to also update and clarify the factors to be applied to seismic demand for qualification by test, test experience data, and earthquake experience data required to meet the performance goals of the Standard.
The restrictions on the use of factors to be applied to seismic demand are also documented. Finally, an entirely new chapter has been added on seismically isolated structures, with emphasis on design and on testing of seismic isolation bearings.
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You may post to this blog or click the link below for more help. Abatt, Fellow ASCE, has over 30 years experience in engineering practice, education, and management of acse engineering teams.
ASCE 43 – Changes to the Upcoming Revision 2018
He has authored numerous technical reports and presentations in his professional career that highlight his technical expertise with linear and nonlinear structural ascee, seismic analysis, soil-structure interaction, fluid-structure interaction, and impact analyses.
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ASCE Recognizes Johnson With Fellow Status
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