Overview
The 112 soundproof partition wall refers to a specialized acoustic wall system built around a 112-type steel keel framework. This numbering system indicates the specific profile dimensions and load-bearing capacity of the metal studs used in the assembly. Unlike standard drywall partitions, these walls integrate multiple noise-blocking technologies including resilient channels, dense insulation cores, and mass-loaded barriers. They are commonly specified in projects requiring high-performance sound isolation between rooms or floors.
Structure and Working Principle
The system consists of a primary steel stud frame (112 keel) with staggered stud placement to break sound bridges. Mineral wool insulation (typically 50-100kg/m³ density) fills the cavity, while double layers of gypsum board with viscoelastic damping compound create mass. The acoustic performance stems from the mass-spring-mass principle: the heavy boards absorb sound energy, the springy insulation converts it to heat, and the decoupled studs prevent vibration transfer. Additional enhancements may include acoustic sealants, floating floor details, and specialized ceiling connections to create a complete sound isolation envelope.
Key Features
These partitions achieve STC ratings between 50-55, meaning they can reduce typical office noise to library-level quietness. The 112 keel's reinforced design supports taller installations (up to 6m) without sagging compared to lighter frames. Fire resistance is another critical feature, with many systems achieving 60-120 minute ratings when using fire-rated boards and insulation. The modular design allows for quick installation and future reconfiguration, making them popular for commercial tenant improvements.
Application Areas
Corporate offices utilize these walls between meeting rooms and open-plan areas to prevent speech intelligibility. Healthcare facilities install them between patient rooms and corridors to comply with HIPAA privacy requirements and improve rest quality. In hospitality, they separate hotel rooms to prevent noise complaints. Recording studios and home theaters employ specialized versions with higher STC ratings (60+) that incorporate additional lead layers or decoupled wall designs.
Maintenance and Precautions
Proper installation is critical - gaps as small as 1% of the wall area can reduce performance by 50%. All penetrations for electrical outlets or HVAC must be sealed with acoustic putty pads and fire-rated sealants. Long-term maintenance involves checking sealant integrity around perimeter joints and ensuring wall penetrations remain properly sealed. Avoid hanging heavy items directly on the partition without proper reinforcement, as this can create sound bridges.
B2B Procurement Guide
When sourcing 112 soundproof walls, request third-party test reports showing actual STC performance - many manufacturers exaggerate ratings. Compare core material specifications, as higher density mineral wool (≥80kg/m³) significantly improves low-frequency noise blocking. Lead times for specialized components can be 4-6 weeks. Consider total installed cost rather than just material price - improper installation voids most acoustic warranties. For large projects, request mockup testing before full-scale deployment.
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