tailieunhanh - Guide for Sound Insulation in Wood Frame Construction Part 5

Trong ví dụ này, "nhà hàng", trần trực thuộc cũng giới thiệu truyền đáng kể trên đường chéo. Với một subfloor OSB trần, có hai con đường quan trọng chéo - từ bề mặt sàn trên cấp trên trần và tường được tách trong phòng theo đường chéo dưới đây. | Page 44 of 103 In this row housing example the directly attached ceiling also introduces significant transmission on the diagonal. With a bare OSB subfloor there are two important diagonal paths - from the floor surface on the upper level to the ceiling and the separating wall in the room diagonally below. Floor toppings provide significant improvements in both paths. Changing the mounting of the gypsum board on the sidewalls or adding layers has no significant effect for diagonal transmission. Link to Corresponding Impact ỊỉiSBÍ 1S n 1 Topping over subfloor changes flanking Various toppings Apparent-STC depends on topping and wall surface See table below Separating wall in lower room Gypsum Board 2 layers directly attached Gypsum Board 1 layer resiliently mounted Floor Surface Apparent-STC No topping basic subfloor 54 52 19 mm OSB stapled to subfloor 57 56 25 mm gypsum concrete bonded to subfloor 61 58 38 mm gypsum concrete on resilient mat over subfloor 62 61 Note These estimates were obtained from evaluation of a limited set of specimens built with specific products that are identified in the descriptions. See detail drawings Using generic equivalents may change results. IRC RR-219 Guide for Sound Insulation in Wood Frame Construction March 2006 Page 45 of 103 Summary - Flanking between Row Housing Units Side-by-side Row Housing Airborne Sound Source This section concerns row housing multiple stories with no requirement for sound insulation between stories where the gypsum board of the ceiling is applied directly to the bottom of the floor joists. 1. The main horizontal flanking paths are from the floor of one room to the floor of the adjoining unit. Hence only the floor surfaces can be modified to reduce flanking transmission. 2. The effects with specific floor toppings are listed. 3. The Apparent-STC depends on the separating wall when there is a topping. Values are listed for cases with an improved wall. With a better separating wall adding a topping yields a