標準號：IS 11050 Pt.2-1984
發布日期：1985/4/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：This part of ISO 717— defines single-number quantities for the impact sound insulation in buildings and of floors, and— gives rules for determining these quantities from the results of measurements carried out in one-third octave bands according to ISO 140/6 and ISO 140/7.The single-number quantities according to this part of ISO 717 are intended for rating the impact sound insulation and for simplifying the formulation of acoustical requirements in building codes. The required numerical values of the single-number quantities can be specified according to varying needs.Methods for obtaining single-number quantities— for floor coverings from the results of measurements carried out in one-third octave bands according to ISO 140/8, and— for bare concrete floors according to their performance in combination with soft floor coveringsare described in annexes A and B.Annexes A and B do not form an integral part of this part of ISO 717.