CSA Z783:12 (R2021)

Preface This is the first edition of CSA Z783, Deconstruction of buildings and their related parts . This Standard has been developed to provide a consistent approach to deconstruction methodologies for those involved in the deconstruction of buildings, including but not limited to contractors, consultants, consumers, designers, building owners, regulators, and material supply and value chain organizations. Issues addressed in this Standard include (a) contractual obligations; (b) deconstruction processes, procedures, and methods; and (c) recording the source and destination of materials, components, products, and systems resulting from deconstruction. Users should be aware that the authority having jurisdiction might have additional approval requirements for deconstruction procedures, including procedures related to approvals, safe operation, and material handling, that are outside the scope of this Standard. This Standard may be referenced by governments to increase recoverable material flows away from waste disposal sites such as landfills by regulating the processes and procedures for the deconstruction of buildings. The objectives of this Standard are to (a) provide minimum requirements for efficiently deconstructing buildings; (b) highlight methods and processes for directing materials, components, products, and systems from deconstruction into useful and economically beneficial applications; and (c) improve the capacity of the building industry to contribute to the sustainable use of natural resources, reduce greenhouse gases, and reduce products and materials entering waste disposal sites such as landfills. Remarks on greenhouse gas reduction, deconstruction specifications, typical deconstruction procedures, the benefits of deconstruction, and deconstruction feasibility assessment are found in Annexes A to E. CSA gratefully acknowledges the financial support provided for the development of this Standard by the Canadian Construction Association (CCA), Canadian Copper and Brass Development Association (CCBDA), Canadian Institute for Steel Construction (CISC), Canadian Precast/Prestressed Concrete Institute (CPCI), Canadian Sheet Steel Building Institute (CSSBI), Natural Resources Canada (NRCan), and Public Works and Government Services Canada (PWGSC). This Standard was prepared by the Subcommitte on Deconstruction, under the jurisdiction of the Technical Committee on Sustainable Construction Practices and the Strategic Steering Committee on Building Products and Systems, and has been formally approved by the Technical Committee. Scope 1.1 This Standard specifies minimum requirements for processes and procedures connected with the deconstruction of buildings. It is intended for use by contractors, consultants, designers, building owners, regulators, and material supply and value chain organizations involved in deconstruction of a building that is at the end of its life or when it is undergoing renovations or alterations. 1.2 This Standard applies to existing buildings where deconstruction is to be considered as a means to reconfigure, remove, or partially remove an existing building. Note: See Clause 4.2.1 for typical materials, components, products, and systems included in the scope of deconstruction projects. 1.3 This Standard does not specifically address (a) landscaping (e.g., trees and other plantings, soils, and surface toppings); (b) civil structures and works not attached to the building (e.g., roads, surface parking lots, runways, bridges, docks, transmission towers, water towers, cranes, and gantries); (c) utility structures (e.g., effluent treatment plants, water purification plants, electrical substations, and electrical generating plants); and (d) process or manufacturing equipment related to the previous use of the building. Note: Although these topics are not specifically addressed by the Standard, deconstruction principles may be applied to them. 1.4 This Standard does not address procedures for assessing the suitability of deconstruction components or materials for reuse in another application. 1.5 This Standard does not address health and safety requirements. Note: Although the need for health and safety provisions is highlighted in specific clauses of this Standard, health and safety regulations are controlled by the authority having jurisdiction. 1.6 In CSA StandardDetails, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the standard. 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. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (nonmandatory) to define their application.