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RS ISO 16745-1: 2017
Sustainability in buildings and civil engineering works — Carbon metric of an existing building during use stage — Part 1: Calculation, reporting and communication

Abstract

This document provides requirements for determining and reporting a carbon metric of an existing
building, associated with the operation of the building. It sets out methods for the calculation, reporting
and communication of a set of carbon metrics for GHG emissions arising from the measured energy use
during the operation of an existing building, the measured user-related energy use, and other relevant
GHG emissions and removals. These carbon metrics are separated into three measures designated CM1,
CM2, and CM3 (see 5.1.1).
This document follows the principles set out in ISO 15392 and those described in Clause 4. Where
deviations from the principles in ISO 15392 occur, or where more specific principles are stated, this
document 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 document does not include any method of modelling of the operational energy use of the building
but follows the conventions provided by other International Standards, as given in relevant clauses.
This document is not an assessment method for evaluating the overall environmental performance
of a building or a building-rating tool and does not include value-based interpretation of the carbon
metric(s) through weightings or benchmarking.
This document deals with the application of the carbon metric(s) for an existing building, either
residential or commercial, or a building complex. It does not include provisions for regional and/or
national building stock.

General Information

Code	Classification	Theme	Pages	Publisher	Availability
RS ISO 16745-1: 2017	ADOPTED ISO STANDARDS	Civil engineering	47	First Edition	Available