ISO DIS 21931-2

Description / Abstract: This International Standard provides a general framework for assessing the sustainability performance of civil engineering works based on a life cycle approach.

This International Standard identifies and describes issues to be taken into account in the development and use of methods of assessment of the sustainability performance for all types of civil engineering works, both new and existing, and it is relevant for the assessment of the environmental, social and economic performance of new civil engineering works over their entire life cycle, and of existing civil engineering works over their remaining ”in use” stage and “end of life” stages.

The object of assessment in this International Standard is the civil engineering works itself and its area of influence (for example, local infrastructure beyond the area of the civil engineering works, transportation of the users of the civil engineering works and the use and exploitation of the infrastructure itself). It excludes environmental, social and economic risk assessment, but the results of a risk assessment may be taken into consideration. This International Standard is intended to be used in conjunction with, and following the principles set out in, ISO 15392 and the ISO 14000- series of International Standards. In the assessment of the sustainability performance of construction works this International Standard takes precedence.

NOTE 1 Valuation methods, levels, classes or benchmarks may be prescribed in the requirements for environmental, social and economic performance in the client’s brief, construction regulations, national standards, national codes of practice, civil engineering works assessment and certification schemes, etc.

NOTE 2 The rules for assessment of environmental, social and economic aspects of operation practices, are included within this framework, and the consequences of decisions or actions that influence the environmental, social and economic performance of the object of assessment are taken into account.