COMPARISON OF MEASURED AND PREDICTED SOUND INSULATION IN WOOD FRAME LIGHTWEIGHT BUILDINGS

摘要

When wood frame lightweight constructions are considered, the standardized methods, EN 12354-1 and -2, for predicting building performances from the performances of building elements have to be modified. A prediction method based on SEA and adapted to lightweight constructions requiring more input data than for heavy structures has been introduced by CSTB. Recently, some simplifications have been introduced by grouping building elements and junctions between elements, into a small number of categories represented by characteristic parameters. Laboratory and in-situ measurements have been carried out on a wood frame lightweight building and some of its elements. Comparisons between results expressed in terms of airborne and impact sound insulation between rooms, either directly measured or calculated using the prediction method are presented; these results, including or not the simplified approach, are given in the cases of vertical and horizontal transmission.