More complex partitions are modelled using work by Sharp, Cremer and others. ![]() It models materials using well known elastic plate theory including allowances for thick panel effects as published by Ljunggren, Rindel and others. INSUL can be used to quickly evaluate new materials and systems, or to investigate the effects of changes to existing designs. The software calculates the sound reduction in third-octave bands and the weighted sound reduction indices, R w, R w+C 50-3150 and R Atr. The predictions are based on analytical calculations that only need simple data for the design. Floors with- or without suspended ceilings.Profiled steel sheets now working in double skin constructions. ![]()
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