BS EN ISO 717-2:2013

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Procedure for evaluating single-number quantities for
  impact sound insulation rating
5 Procedure for evaluating the weighted reduction in impact
  sound pressure level by floor coverings on
  bare heavy floors
6 Procedure for evaluating the weighted reduction in impact
  sound pressure level by floor coverings on
  lightweight floors
Annex A (informative) - Additional weighting procedure
Annex B (informative) - Procedure for evaluating the equivalent
        weighted normalized impact sound pressure
        level of bare heavy floors
Annex C (informative) - Examples of the evaluation of a
        single-number quantity
Bibliography

Provides: a) single-number quantities for impact sound insulation in buildings and of floors; b) rules for determining these quantities from the results of measurements carried out in one- third-octave bands in accordance with ISO 10140-3 and ISO 140-7, and in octave bands in accordance with that option in ISO 140-7 for field measurements only; c) single-number quantities for the impact sound reduction of floor coverings and floating floors calculated from the results of measurements carried out in accordance with ISO 10140-3; d) a procedure for evaluating the weighted reduction in impact sound pressure level by floor coverings on lightweight floors.