Conception sismique des murs de refend couplés, selon la norme canadienne Calcul des ouvrages en béton 2004 et le Code national du bâtiment – Canada 2005

2009 ◽  
Vol 36 (7) ◽  
pp. 1221-1237 ◽  
Author(s):  
Tewfik Benazza ◽  
Omar Chaallal

This paper presents a comprehensive review of the new provisions for the design of coupled shear walls in Canadian seismic zones. It follows major revisions that were incorporated in the National Building Code of Canada 2005 (NBCC 2005) and in the Canadian standard Design of concrete structures (CSA A23.3-04), which were due, in particular, to the adoption of a new Canadian map of seismic risk. The present study is intended to address recurring confusions in current practice and the difficulties expressed in the application and interpretation of the new NBCC 2005 and CSA A23.3-04 provisions. A design flowchart is thus proposed as a practical guide, describing, step by step, the required verifications at each stage of coupled shear walls calculation. Finally, to demonstrate the applicability of these new provisions, a numerical example is detailed, following the presented design flowchart.

2021 ◽  
Author(s):  

Precast, prestressed concrete design is based on conformance with the provisions of the American Concrete Institute’s (ACI’s) Building Code Requirements for Structural Concrete (ACI 318-14) and Commentary (ACI 318R-14). In most cases, these provisions are followed explicitly. Occasionally, interpretation of some sections of ACI 318 is required to ensure quality is maintained in conjunction with the unique characteristics of precast and prestressed concrete fabrication, shipping, and erection. Members of the PCI Building Code Committee, along with other experienced precast concrete design engineers, have identified code provisions, detailed in this publication, that require clarification or interpretation. These design practices are followed by most precast concrete design engineers to produce safe, economical precast concrete structures and they provide a consistent approach for the designers and contractors.


Author(s):  
Kevin McCue

A recently published seismic zoning map of Papua New Guinea does not correlate particularly well with either presentday seismicity or tectonic models of the region. Several reasons are given and a modified version of the map is presented for discussion and as a replacement in the Building Code.


Author(s):  
Reza Fathi-Fazl ◽  
Bessam Kadhom ◽  
Zhen Cai ◽  
Farrokh Fazileh

The National Research Council Canada recently developed a multi-criteria and multi-level framework for seismic risk management of existing buildings in Canada. One of the key criteria in this framework is benchmark NBC edition, which refers to the applicable edition of National Building Code of Canada (NBC) in which significantly improved seismic requirements were adopted and enforced. Since post-benchmark buildings are expected to demonstrate satisfactory seismic performance, they may be exempt from structural seismic risk assessment. This paper identifies benchmark NBC editions for 17 model building types in Canada. The identification starts by tracking major seismic improvements in the United States benchmark codes and standards. These improvements are then mapped to applicable NBC editions and relevant design standards. Provincial building code editions corresponding to benchmark NBC editions are also identified. The benchmark NBC editions and corresponding provincial building code editions help building owners quickly identify and exempt post-benchmark buildings with acceptable seismic risks and thus allocate resources to the buildings with potentially unacceptable seismic risks.


2020 ◽  
Vol 33 (6) ◽  
pp. 735-755.e11 ◽  
Author(s):  
Jeremy J. Thaden ◽  
Joseph F. Malouf ◽  
Kent H. Rehfeldt ◽  
Elena Ashikhmina ◽  
Gabor Bagameri ◽  
...  

2014 ◽  
Vol 17 (9) ◽  
pp. 1227-1240 ◽  
Author(s):  
E. Noroozinejad Farsangi ◽  
F. Hashemi Rezvani ◽  
M. Talebi ◽  
S.A.H. Hashemi

2011 ◽  
Vol 105-107 ◽  
pp. 1048-1051
Author(s):  
Yang Li ◽  
Jian Guo Hou

This paper put forward a new concept named equivalent guarantee rate, which can be used to evaluate the crack control safety level in concrete design specification more conveniently. As a numerical example, the crack control safety level for civil buildings in GB 50010-2010 “Code for Design of Concrete Structures” is analysized by calculation of equivalent guarantee rate and fuzzy reliability index respectively. The rationality of equivalent guarantee rate is confirmed by comparing the calculation results of the equivalent guarantee rate and the fuzzy reliability index.


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