An overview of Canadian code requirements for earthquake resistant concrete buildings

Uzumeri, S. M.; Otani, Shunsuke; Collins, Michael P.

doi:10.1139/l78-047

Cited by 11 publications

(7 citation statements)

References 4 publications

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“…To appreciate the aspects of the original design of an existing building, the engineer should consult the appropriate code and standard along with their commentaries. This paper draws from an overview of the Canadian seismic design provisions up to 1977 authored by Uzumeri, Otani, and Collins (Uzumeri et al 1978). Figure 1 shows the locations and sizes of earthquakes in Canada from 1627 to 2007 (Adams and Atkinson 2003).…”

Section: Introductionmentioning

confidence: 99%

Evolution of seismic design provisions in theNational building code of Canada

et al. 2010

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The purpose of this paper is to provide a summary of the evolution of seismic design in Canada. This paper presents the significant changes to the approach taken in determining seismic hazards and seismic hazard maps, and describes the evolution of the seismic design provisions of the National building code of Canada. The introduction of important parameters in determining the seismic base shear such as the period of vibration of the structure, the influence of type of soil, and the concepts of ductility and energy dissipation capacity of elements and structures are presented. The levels of seismic design base shears, determined from different versions of the National Building Code of Canada, are compared for reinforced concrete frame and wall structures to illustrate the changes.

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Section: Introductionmentioning

confidence: 99%

Evolution of seismic design provisions in theNational building code of Canada

et al. 2010

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“…Uzumeri et al (1978) have described the developments in NBCC seismic loading provisions up to the 1977 edition; a number of further changes have taken place since 1977. Without detailing all of the changes, the following are particularly significant: • three versions of zoning maps (1956, 1970, and 1985); • the move from using zonal factors to peak ground acceleration and velocity; • changes in seismic response factor, i.e., how base shear varies with period; • changes in how ductility capacity is taken into account; • changes in determination of structural period; • changes in how seismic loading is distributed along the height of a structure.…”

Section: Introductionmentioning

confidence: 99%

Seismic level of protection for building structures

Heidebrecht¹

1997

Can. J. Civ. Eng.

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The seismic level of protection of building structures is concerned with the performance of the structures during strong seismic shaking. Performance expectations, for both functionality and life-safety objectives, are related to structural response parameters such as deflection, interstorey drift, and damage. This article describes a research framework for the evaluation of the level of protection and its potential application to the evaluation of the level of protection provided by the seismic provisions of the National Building Code of Canada (NBCC). This framework is described in terms of four distinct facets or dimensions, namely seismic hazard, seismic design, response and damage, and vulnerability. The evaluation of the NBCC level of protection for a variety of building types is discussed, including a detailed description of a pilot project on a six-storey reinforced concrete office frame structure. A brief description is given of other potential applications of the framework, including rehabilitation strategies for existing buildings, repair and replacement costs, and seismic design for low to moderate seismic hazard regions.Résumé : Le niveau de protection parasismique des bâtiments dépend de leur performance durant de forts tremblements de terre. La performance attendue en terme de serviceabilité du bâtiment et protection des occupants dépend des paramètres de la réponse structurale tels que déformation, déplacement relatif d'un étage et dommages. Cet article décrit un cadre de recherche pour l'évaluation du niveau de protection parasismique et son application potentielle à l'évaluation du niveau de protection fourni par les dispositions du Code National du Bâtiments du Canada (CNBC). Ce cadre de recherche est décrit en terme de quatre facettes, à savoir risque sismique, conception parasismique, réponse/dommages subits et vulnérabilité. L'évaluation suivant le CNBC du niveau de protection pour une variété de bâtiments typiques est discutée, incluant une description détaillée d'un projet pilote sur un édifice à bureaux en béton armé de six étages. Une brève description d'applications potentielles de cette recherche, incluant des stratégies de réhabilitation de bâtiments déjà en service, évaluation de coûts de réparation/remplacement, et conception parasismique pour des régions à risque sismique allant de faible à modéré est donnée.

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“…Code requirements for achieving such seismic resistant characteristics of buildings have evolved in a semiempirical manner by simplified mathematical and experimental models and from experience of the behaviour of structures in earthquakes. A history of the development of the NBCC seismic provisions has been presented by Uzumeri et al (1978). Because of the semiempirical development of the code, the basis for some of the loading requirements are sometimes obscured to the user.…”

Section: Introductionmentioning

confidence: 99%

Force reduction factors for the seismic provisions of the National Building Code of Canada

Rainer¹

1987

Can. J. Civ. Eng.

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/npsi/ctrl?lang=en http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/ctrl?lang=fr Access and use of this website and the material on it are subject to the Terms and Conditions set forth at http://nparc.cisti-icist.nrc-cnrc.gc.ca/npsi/jsp/nparc_cp.jsp?lang=en NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur.Canadian Journal of Civil Engineering, 14, 4, pp. 447-454, 1987-08 Force reduction factors for the seismic provisions of the National Building Code of Canada Rainer, J. H. Ser TH1 N21dNatlonal Research Consell natlonal A derivation of force reduction factors for the seismic provisions of the National Building Code of Canada (NBCC), 1985, is presented. This includes the following: classification of seismic actions, applicable limit states, change in load factor, derivation of force reduction factors, and classification of structural configurations. Quantitative comparisons are made between the derived force reduction factors and the response modification factors of the Applied Technology Council and good agreement was found. It is suggested that seismic requirements should be considered as accidental actions with a load factor a, = 1.0. These results can form the basis for possible modifications to the 1985 NBCC seismic provisions.Key words: earthquake resistant structures, building code, loads, load factors.Une dCrivation des facteurs de rkduction de la force pour fes exigences du Code national du bltiment (1985) relatives aux sCismes est prCsentCe. Ceci inclut : classification de I'activitC sismique, Ctats limites applicables, modification du coefficient de charge, dCrivation des facteurs de rkduction de la force et classification des configurations des structures. Des comparaisons quantitatives sont effectuCes entre les facteurs de rkduction de la force dCrivCs et les facteurs de modification de la rCponse proposCs par le Applied Technology Council, et on a constat6 une bonne correspondance entre les deux. L'auteur suggbre de considCrer les exigences relatives aux sCismes comme des Cvtnements accidentels avec un coefficient de cx~ = 1.0. Ces rksultats peuvent servir de base k des modifications possibles des exigences du Code national du bltiment (1985)

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An overview of Canadian code requirements for earthquake resistant concrete buildings

Cited by 11 publications

References 4 publications

Evolution of seismic design provisions in theNational building code of Canada

Evolution of seismic design provisions in theNational building code of Canada

Seismic level of protection for building structures

Force reduction factors for the seismic provisions of the National Building Code of Canada

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