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.
building services
services provided by technical building systems(3.19) and by appliances (1SO 6707-1:2014,5.4.7) toprovide indoor climate conditions, domestic hot water,illumination levels, and other services related tothe use of the building (ISO 6707-1:2014,3.1.3)
[SOURCE: ISO/TR 16344:2012,2.1.10]
carbon intensity
carbon metric(3.3) expressed in relation to a specific reference unit related to the function(ISO 15686-10:2010,3.10) of the building (ISO 6707-1:2014,3.1.3)
Note 1 to entry: Examples of reference units may include per unit area, per person, per kilobyte, per unitoutput, and per GDP.
carbon metric
sum of annual greenhouse gas emissions (1SO 14064-1:2006,2.5) and removals (ISO 14064-1:2006,2.6), expressed as CO2 equivalents (1S0 14064-1:2006,2.19), associated with the use stage of a building(ISo 6707-1:2014,3.1.3)
removal of latent and/or sensible heat[SOURCE: ISO 16818:2008,3.47]
delivered energy
energy(3.6), expressed per energy carrier(3.7 ), supplied to the technical building systems(3.19) throughthe system boundary (3.18), to satisfy the uses taken into account [heating, cooling (3.4), ventilation(3.20), domestic hot water, lighting, appliances (ISO 6707-1:2014,5.4.7 ), etc.J, or to produce electricityNote 1 to entry: Delivered energy can be calculated for defined energy uses or it can be measured.
[SOURCE: ISO/TR 16344:2012,2.1.33, modified by deleting the Note 1 related to active solar and windenergy systems.]
capacity for doing work; having several forms that may be transformed from one to another, such asthermal (heat), mechanical (work) , electrical, or chemical
[SOURCE: ISO 16818:2008,3.74]