BS ISO 16745:2015 pdf download – Environmental performance of buildings — Carbon metric of a building — Use stage This International Standard provides requirements for determining and reporting a carbon metric of anexisting building, associated with the operation of the building.It sets out methods for the calculation,reporting, communication, and verification of a set of carbon metrics for GHGemissions arisingfrom themeasured energy use during the operation of an existing building, the measured user-related energyuse, and other relevant GHG emissions and removals. These carbon metrics are separated into threemeasures designated CM1,CM2,and CM3(see 5.1.1). This International Standard follows the principles set out in IS0 15392 and those described in Clause 4.Where deviations from the principles in lSo 15392 occur, or where more specific principles are stated,this International Standard takes precedence. The carbon metrics CM1 and CM2 are not quantified based on life cycle assessment(LCA) methodology.Carbon metric CM3 may include partial quantification based on the results of LCA. This International Standard does not include any method of modelling of the operational energy use of thebuilding but follows the conventions provided by other International Standards, as given in relevantclauses.This International Standard is not an assessment method for evaluating the overall environmentalperformance of a building or a building-rating tool and does not include value-based interpretation ofthe carbon metric(s) through weightings or benchmarking. This International Standard deals with the application of the carbon metric(s) for an existing building,either residential or commercial, or a buildingcomplex.It does not include provisions for regional and/ornational building stock. 2Normative references The following documents, in whole or in part, are normatively referenced in this document and areindispensable for its application.For dated references,only the edition cited applies. For undatedreferences, the latest edition of the referenced document (including any amendments) applies. ISo 6707-1:2014,Buildings and civil engineering works — Vocabulary—Part 1:General terms ISo 12655,Energy performance of buildings —Presentation of measured energy use of buildings ISO 14050,Environmental management – Vocabulary IS0 15392,Sustainability in building construction — General principles ISO/TR 16344:2012, Energy performance of buildings —Common terms, definitions and symbols for theoverall energy performance rating and certification 3Terms and definitions For the purposes of this document, the terms and definitions given in ISO6707-1,ISO 12655,ISO 14050,ISO 15392, iSO/TR 16344,and the following apply.Where differences or conflicts occur, the definitionsgiven below shall take precedence. NOTE Anumber ofterms anddefinitions from these other sources have been repeated below,for ease ofreference. 3.1 building services services provided by technical building systems(3.19) and by appliances (1SO...

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