A closed metal net or an expanded metal of a net type which are continuously connected to each other to form a predetermined shape is inserted into a bottom structure, thereby capable of effectively reducing sound transmission between floors without increasing the thickness of the slab.KIM, TAE ...
A sound insulation floor structure comprises a floor backing member, a floor finishing layer, and an intermediate layer between the floor backing member and the floor finishing layer, the intermediate layer comprising a buffer member comprising a nonwoven structure. The nonwoven structure comprises a...
1.2本试验方法适用于安装在标准混凝土地板上的所有地板覆盖物,无论是单层还是多层.多层覆盖物可在工厂组装或在测试实验室组装. 1.3试验方法仅适用于实验室测量.它不适用于现场情况下地板覆盖物有效性的测量. 1.4 实验室认证—方法E 492中给出了认证实验室执行本试验方法的程序 . 1.5 本标准并非旨在解决与其使用相关...
Standard: ASTM E2179 – Standard Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in Reducing Impact Sound Transmission Through Concrete Floors Certification Required: Acoustical certification is currently not required by building codes, however the Delta IIC rating can be ...
Perfect Sound Absorbent Great Great Poor Pet Proof Great Good Ok Easy to Install Great Yes Yes Stable in Rooms with Sun Lights Great Great Ok Core Free of Formaldehyde Great Great Ok Indentation & Impacts Resistance Great Good Ok Flooring design Application LVT Vinyl...
walls, ceilings and floors. They are most common in large, empty rooms. However, they can happen in smaller spaces, too, if there are enough hard surfaces to bounce off of. If you have two hard surfaces close together, sounds can bounce back and forth between them, blurring the sound. ...
ASTM E2179 Standard Test Method for Laboratory Measurement of the Effectiveness of Floor Coverings in ReducingImpact Sound Transmission Through Concrete Floors.C. Military Specifications (MIL):1. MIL-D-3134J Deck Covering Materials.Specifier... ...
There is a substantial body of research regarding the relationship between the built environment and travel behavior. Most literature focus on the direct relationship between the spatial characteristics and travel behavior and the results show mixed outcome. We argue that a utility- and activity-based...
In the calculation of the acoustic signal, several source surfaces need to be selected simultaneously to investigate their contribution to the sound field. 2.2. Active Control Method of the Flow-Induced Resonance Noise The narrowband ANC system for resonance noise mainly consists of the computer, ...
This could be because of the complex nature of the method, which is based on the measurement of the sound emitted by fruit as it vibrates in response to a gentle tap with a small pendulum [86]. Figure 3. Schematics of multi-sensors coupled with imaging system for monitoring the quality ...