Find the most up-to-date version of CSA S at Engineering The level of seismic upgrading of the OFCs required is dependent on the performance objective selected for the asset, as defined in CAN / CSA -S . Buy CSA S SEISMIC RISK REDUCTION OF OPERATIONAL AND FUNCTIONAL COMPONENTS (OFCS) OF BUILDINGS from SAI.
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Buildings in Canada that are designed in accordance with early codes can be vulnerable to the failure or malfunctioning of OFCs after an earthquake. Structural aspects are covered by the building codes and other publications referenced in Clause 2. Lifeline components in the immediate vicinity of the building and essential to its performance objective such as transformers, back-up power generators, fuel tanks, elevators, etc.
The Canadian Standards Association CSA Standard provides information and methodology to identify and evaluate hazards caused by earthquake forces csx on OFCs and to undertake appropriate mitigation strategies and techniques.
Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Where a seismic upgrade is deemed necessary, the upgraded structure must have a seismic resistance that at least meets the minimum level as outlined in the Seismic Standard. External seismic hazards such as potential failure of service lifelines, ground failures outside the building, and business resumption after an earthquake are not addressed in the Seismic Standard.
It is important that building owners, building designers, utility designers, and geotechnical experts coordinate the interface design and details. Proceed to Checkout Continue Shopping. PSPC is developing a new guideline to aid the seismic assessment of stone masonry structures. National codes and guidelines are in place for the seismic design, evaluation, and upgrading of building structures in Canada.
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The required Minimum level of seismic resistance for existing buildings to satisfy life safety requirements assuming National Building Code of Canada seismic loading requirements as the baseline is to be determined through a risk-based approach taking into consideration of the following three factors:.
While seismic risk reduction of OFCs is affected by the structural performance of a building, this Standard does not address structural integrity see Clause 1. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. The new guideline will also provide information on the general understanding of both the potential seismic deficiencies and the methods of seismic upgrading of stone masonry structures.
As the voice of the U. Notes to tables and figures are considered part of the table or figure and may be written as requirements. These include, but are not limited to, building components such as canopies over exit ways, partitions, roof parapets, mechanical and electrical systems, ceilings, and cladding.
Due consideration shall be given to internally fragile OFCs equipped with stop anchors or snubbers comprising air gaps as large shock accelerations may be induced if the OFC impacts on its supports during strong shaking [see Clause 9. Annexes are designated normative mandatory or informative non-mandatory to define their application.
When determining what constitutes a significant project, the long range plans for the asset must be reviewed in order to determine the most appropriate time to complete any necessary seismic upgrades mid-life retrofit, major base building recapitalization. These systems require special interfacing design and details at the building junction to allow for differential movements between the building and its surrounding environment.
Definitions of the appropriate consequence class for the two most common building occupancies for PSPCthat is office buildings and public buildings buildings to where the public are admittedare given in the Seismic Standard.
This Standard is intended to address the need to reduce the seismic risk of OFCs and thus improve the post-earthquake functionality of buildings. Need more than one copy? Please first log in with a verified email before subscribing to alerts.
Guidelines for the seismic risk reduction of OFCsalso known as non-structural building components that is, building contents, bookcases, piping, light fixtures, etc. This shall take into account factors such as future building use, seismic hazard, control of seismic damage to the building, post-disaster building use, heritage designation, and the cost differential for upgrading to a higher level versus the minimum.
We have no amendments or corrections for this standard. Please first verify your email before subscribing to alerts. Seismic requirements for existing buildings undergoing significant projects are to be in compliance with this section.
For example, a seismic resistance of 0. Intrinsic functionality issues refer to the functionality of those OFCs that would be adversely affected by the malfunction of one or more elements damaged by the design earthquake.
The classification of consequences of failure is based on recent research conducted by the National Research Council refer to Relevant Technical Documentation below.
This Standard does not address those OFCs which are lightweight, non-hazardous, and relatively inexpensive in the context of the building and its functionality.
Seismic resistance of the building shall be expressed as a percentage of the current National Building Code of Canada requirements for new buildings. Changes to this edition include a harmonization with the National Building Code of Canada NBCC; b cssa general reorganization of contents; c revisions in definitions and symbols; d update of references; e revised definitions of OFC performance objectives; f a revised clause Clause 5 on procedures for OFCs in new buildings; g new flowcharts Figures 3 to 5 to better illustrate the various procedures described in this Standard; h a revised clause Clause 7.
Seismic Standard – Technical Guides – NPMS – Real Property – PSPC
Standards Subsctiption may be the perfect solution. This standard is also available to be included in Standards Subscriptions. OFCs are divided into three categories of sub-components: Planned additions to existing buildings are considered to be under the category of new buildings.
The damage resulting from these components can be considerably more than that arising from structural component failure, particularly in areas of low and moderate seismic intensity. The main cause of casualties and property damage in the event of sca earthquake is often the failure of these OFCs. Such work must be undertaken by a qualified professional engineer. However, as a result of damage caused by recent earthquakes, focus has shifted to the behaviour of OFCs in overall building performance.