CSA Z782-2006 Guideline for design for disassembly and adaptability in buildings (First Edition Update No 1 August 2007 Update No 2 September 2012).pdf

1、Z782-06Guideline for design for disassembly and adaptability in buildingsLegal Notice for StandardsCanadian Standards Association (CSA) standards are developed through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers repre

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17、and if you do make such copies, you are required to destroy them immediately. Use of this document constitutes your acceptance of the terms and conditions of this Legal Notice.Update No. 2Z782-06September 2012Note: For information about the Standards Update Service or if you are missing any updates,

18、 go to shop.csa.ca or e-mail techsupportcsagroup.org.Title: Guideline for design for disassembly and adaptability in buildings originally published November 2006Revisions issued: Update No. 1 August 2007The following revisions have been formally approved and are marked by the symbol delta () in the

19、margin on the attached replacement pages:Revised Clause 6.9.2New NoneDeleted None Update your copy by inserting these revised pages.Keep the pages you remove for reference. 2012 CSA Group Guideline for design for disassembly and adaptability in buildingsSeptember 2012(iii) the application of sequent

20、ial assembly sequences.(b) independent are characterized by the(i) application of parallel instead of sequential assembly/disassembly; and(ii) creation of an open hierarchy of distinct modules.6.8.1.5 Design considerations include the following:(a) When possible, materials and components, which can

21、be easily, safely, and more affordably removed and transported, should be used.(b) A means of handling components during disassembly should be provided. Handling during disassembly can require points of connection for lifting equipment or temporary supporting devices.(c) Components that are sized to

22、 suit the intended means of handling should be used. Various possible handling options at all stages of assembly, disassembly, transport, reprocessing, and reassembly should be allowed for.(d) Spare parts, and on-site storage for them, should be provided, particularly for custom-designed parts, to a

23、llow broken or damaged components to be easily replaced, and to facilitate minor alterations to the building design.A separation of structure from enclosure will greatly facilitate adaptation and disassembly. However, it is important to remember regional climatic forces: a building in a temperate cl

24、imate can more easily and economically accommodate a variety of enclosures and loose fit than a building in a high-heating-load climate.6.8.2 Examples of potential strategiesParallel disassembly rather than sequential should be allowed for so that materials or components can be removed without disru

25、pting other components or materials. Where this is not possible, the most reusable parts of the assembly should be made the most accessible, to allow for maximum recovery of those components and materials.The “layers” of the building should be separated from each other to facilitate adaptation and d

26、isassembly. Separating long-lived components from short-lived components will facilitate adaptation and reduce the complexity of disassembly, allowing specific types of materials to be removed one at a time, thus facilitating the collection process for recycling or upgrading.6.8.3 MetricWhile indepe

27、ndence is a difficult characteristic to quantify, an ordinal or interval rating scale for the relative independence of design options can be created. In this way, design options can be ranked. An example is a 0 to 5 scale, with each point given a clear definition, e.g., “0 no consideration to lifesp

28、an of component, hierarchy and modularity, sequential assembly” to “5 parallel assembly and open, modular hierarchy”.6.9 Inherent finishes6.9.1 GeneralChoice of finishes can limit the options for reusing or recycling the substrate. To support disassembly, finishes that can contaminate the substrate

29、in such a manner that it is not reusable or recyclable should be avoided. Finishes should serve a specific purpose, e.g., protection or aesthetics.In many cases, there will be recyclable and/or reusable materials that can be used either on the exterior or in the interior of a building that will have

30、 suitable inherent finishes in their “natural state”, e.g., wood, stone, and copper roofing. In other cases, there will be no need to use paint, veneer, or other finishes. Analysis of the choices should take place at the project level, in consultation with qualified building professionals.13(Replace

31、s p. 13, November 2006)Z782-06 2012 CSA GroupSeptember 20126.9.2 Examples of potential strategiesSome materials that have been characterized as “classic and timeless” should be considered, since they tend to endure throughout the life of the building and not to be removed during renovation. Such mat

32、erials include wood with inherent finishes, which does not impinge on the reuse or recyclability of the materials.Hazardous materials such as asbestos and lead-based paint have been restricted. All materials should be examined to ensure environmentally sound management over the life cycle of the pro

33、duct.Elimination of caulking and sealants and high tolerances in the connections can be offset by the ease of removing components for repair and replacement, and designing in durability, using mechanical instead of chemical-based water protection.6.9.3 MetricAt a material level, a “yes or no” assess

34、ment is possible: is the material “unfinished” and recyclable or reusable? If the material finish does not inhibit its reuse or recyclability, it satisfies this criterion.6.10 Recyclable6.10.1 GeneralIn general, materials recovered though disassembly will have economic value through recycling. A mat

35、erial is recyclable if it can be diverted from the waste stream and, through existing processes, facilities, and markets, returned to the economy. If a material is readily recyclable, a portion of its initial cost can be recovered at the end of its useful life through separation and resale as a recy

36、clable commodity.Recycling produces both economic and environmental benefits (e.g., reduced energy, water, and natural resource consumption and reduced emissions) by replacing virgin materials with recycled materials at the end of the life cycle.Realizing the economic and environmental benefits asso

37、ciated with disassembly depends on selecting materials that are recyclable, based on technical feasibility and market factors. For example, metals inherently have a value and are easily recyclable, and as a consequence have an established global infrastructure and markets.6.10.2 Examples of potentia

38、l strategiesRecycling depends on sorting and separating materials. Composite materials pose a difficult challenge, as it is often very difficult to separate their individual constituents for recycling at the end of their life. Consideration should also be given to using materials that have economic

39、value, a recovery infrastructure, and established markets.6.10.3 MetricOne metric is the percentage of recyclable materials used, by weight, volume, and/or total costs. In the case of composite materials, a recyclable percentage by weight, volume, or product can be used.6.11 Refurbishable6.11.1 Gene

40、ralRefurbishable products are designed to allow the consumer to renew the products aesthetic and functional characteristics to a condition suitable for continued use in their original form and function. The product remains the property of the consumer, and the refurbishing process is at the expense

41、of the consumer. Refurbishing can either be offered in-house by the original manufacturer or be made accessible by outside sources.The refurbishing of products reduces the consumption of natural resources. Although the refurbishing can require consumption of additional energy and the associated gene

42、ration of waste, in most cases the environmental impacts are less than for producing an entirely new product.(Replaces p. 14, November 2006)14Update No. 1Z782-06August 2007Note: General Instructions for CSA Standards are now called Updates. Please contact CSA Information Products Sales or visit www.

43、ShopCSA.ca for information about the CSA Standards Update Service.Title: Guideline for design for disassembly and adaptability in buildings originally published November 2006The following revisions have been formally approved and are marked by the symbol delta () in the margin on the attached replac

44、ement pages:Z782-06 originally consisted of 29 pages (vii preliminary and 22 text), each dated November 2006. It now consists of the following pages: Update your copy by inserting these revised pages.Keep the pages you remove for reference.Revised PrefaceNew NoneDeleted NoneNovember 2006 iiivi, and

45、122August 2007 vii Canadian Standards Association Guideline for design for disassembly and adaptability in buildingsAugust 2007PrefaceThis is the first edition of CSA Z782, Guideline for design for disassembly and adaptability in buildings.This Guideline provides a framework for reducing building co

46、nstruction waste through design for disassembly and adaptability (DfD/A) principles.This Guideline was prepared by the Technical Committee on Sustainable Design, under the jurisdiction of the Strategic Steering Committee on Building Products and Systems, and has been formally approved by the Technic

47、al Committee.November 2006Canadian Standards Association gratefully acknowledges the financial assistance provided by the Government of Canada Action Plan 2000 on Climate Change Minerals and Metals Program, managed by the Minerals and Metals Sector of Natural Resources Canada, which is working towar

48、ds reducing Canadas greenhouse gas (GHG) emissions from the minerals and metals sector. By matching funds with other partners, this program supports initiatives that enhance recycling practices and provide GHG emission reductions.Major funding and background support to the development of this Guidel

49、ine was also provided by Public Works and Government Services Canada.Notes: (1) Use of the singular does not exclude the plural (and vice versa) when the sense allows.(2) Although the intended primary application of this Standard is stated in its Scope, it is important to note that it remains the responsibility of the users of the Standard to judge its suitability for their particular purpose.(3) This publication was developed by consensus, which is defined by CSA Policy governing standardization Code of good practice for standardization as “substantial agreeme