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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Seismic Standard – Technical Guides – NPMS – Real Property – PSPC
The Canadian Standards Association CSA Standard provides information and methodology to identify and evaluate hazards caused by earthquake forces acting on OFCs and to undertake appropriate mitigation strategies and techniques.
This standard is not included in any packages. The classification of consequences of failure is based on recent research conducted by the National Research Council refer to Relevant Technical Documentation below. 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.
Seismic requirements for existing buildings undergoing significant projects are to be in compliance with this section. In many cases, losses associated with damage to these components are considerably greater than damage to the structural system. Such work must be undertaken by a qualified professional engineer.
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.
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. 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.
Definitions for quality of inspection and degree of redundancy are based on industry practice and Standard. 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:. The optimum level of upgrade shall be selected based on a holistic review of financial, functional, operational, security, and client requirements, including a review of the Investment Analysis Report.
The objective is to provide a consistent risk management approach. Earthquakes have rendered many buildings unusable due to extensive damage to their operational and functional components OFCs commonly referred to as non-structural componentsincluding building contents.
Guidelines for the seismic risk reduction of OFCsalso known as non-structural building components that is, building contents, bookcases, piping, light fixtures, etc. However, as a result of damage caused by recent earthquakes, focus has shifted to the behaviour of OFCs in overall building performance. 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.
Upgrade options for operational and functional components OFCs shall be considered. Planned additions to existing buildings are considered to be under the category of new buildings. Notes to tables and figures are considered part of the table or figure and may be written as requirements. These systems require special interfacing csq and details xsa the building junction to allow for differential movements between the building and its surrounding environment.
Standards Subsctiption may be the perfect solution. Buildings in Canada that are designed in accordance with early codes can cea vulnerable s8332 the failure or malfunctioning of OFCs after an earthquake. Seismic resistance of the building shall be expressed as a percentage of the current National Building Code of Canada requirements for new buildings.
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. New buildings shall be designed and constructed in accordance with the seismic requirements of the current National Building Code of Canada. Systems comprising several OFCs especially those involving fluid or gas flow require careful assessment of interconnections.
As the voice of the U. A higher level of upgrading, beyond the minimum established in this Seismic Standard, shall be considered.
Some OFCs can contribute to the structural integrity of a building, depending on their location, type of construction, and method of fastening, but these are not generally considered structural components. The planned timelines for the development of these tools are as follows:.
This Standard does not address those OFCs which are lightweight, non-hazardous, and s82 inexpensive in the context of the building and its functionality. National codes and guidelines are in place for the seismic design, evaluation, and upgrading of building structures in Canada. We have no document history for this standard. However, the application of this Standard can result in continued functionality and operation for certain OFCs, depending on the intensity of shaking and the level of over-design introduced in the mitigation scheme.
OFCs are divided into three categories of sub-components: To obtain further information or to contact your regional representative, please contact tpsgc.
Risk to safety, damage to property, and loss of function and operation in a building can be significantly affected by the failure or malfunction of OFCs even if the building structural system has performed well during an earthquake.
Some examples of z832 components and sub-components are listed in Figures 1 and 2. PSPC is developing a new guideline to aid the seismic assessment of stone masonry structures.
Proceed to Checkout Continue Shopping. 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. For example, a seismic resistance of 0.