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BUILDING NOISE DIAGNOSIS & CURE
ACOUSTICAL SEALANT CHOICES
CARPETING, SELECTION & INSTALLATION
FLANKING SOUND PATHWAY CUT-OFF
HEALTH RELATED NOISE COMPLAINTS
HEATING SYSTEM NOISE TRANSMISSION
HOUSE DOCTOR, how-to be
INSULATION LOCATION - WHERE TO PUT IT
NOISE / SOUND DIAGNOSIS & CURE
NOISE AIR CONDITIONER / HEAT PUMP
NOISE, DUCT VIBRATION DAMPENERS
NOISE CONTROL for HEATING SYSTEMS
NOISE CONTROL for FLOORS
NOISE CONTROL for PLUMBING
NOISE CONTROL for ROOFS
NOISE CONTROL for WALLS
NOISE, PLUMBING CHECKLIST
NOISE, PLUMBING DRAIN DIAGNOSIS
NOISE, PLUMBING DRAIN REPAIR
NOISE, WATER HEATER
ODORS GASES SMELLS, DIAGNOSIS & CURE
PLUMBING DRAIN NOISE DIAGNOSIS
PLUMBING NOISE CHECKLIST
PLUMBING SYSTEM NOISES
ROOF NOISE TRANSMISSION
SOUND CONTROL in BUILDINGS
SOUND EVENT LOG
SOUND TRANSMISSION CLASS RATINGS
SOUNDPROOFING MATERIAL PROPERTIES
STAIRS, RAILINGS, LANDINGS, RAMPS
SUMP PUMPS GUIDE
THERMAL EXPANSION of MATERIALS
WATER HAMMER NOISE DIAGNOSE & CURE
This article discusses methods for controlling sound transmission through building walls. Here we define STC - sound transmission class and we provide a table of design details that show STC rating for various building wall framing designs. Sound transmission reduction wall designs are given for both single stud and staggered double stud structural and partition walls.
We include soundproofing suggestions for high noise level areas such as music rooms as well as areas where privacy is a concern such as in counseling and psychotherapy offices.
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This article series discusses noise and sound control in buildings, and includes excerpts or adaptations from Best Practices Guide to Residential Construction, by Steven Bliss, courtesy of Wiley & Sons.
How effectively a wall or floor reduces airborne sound is measured by STC ratings (sound transmission class). Roughly speaking, the STC rating equals the reduction in decibel levels across the partition. (see Table 5-15).
Definition of STC, Definition of SRI , Definition of OITC
Sound Transmission Class (STC) is defined in the ISO-140 standards series. Sound Reduction Index (SRI) is defined in ISO-140 (2012).
So, for example, a 50 dB noise on the other side of an STC 35 wall will sound like a 15 dB noise to the average listener (see our Table of STC ratings and noise reduction left).
Walls and floors in the field often measure lower than in laboratory ratings due to variations in workmanship as well as leaks and bypasses.
The higher the STC rating, the more likely it is to be compromised by site conditions. For that reason, it is best to select a building assembly rated at least 5 points above the design goal.
This topic has been moved to SOUND CONTROL for WALLS
-- Adapted with permission from Best Practices Guide to Residential Construction.
Continue reading at SOUNDPROOFING MATERIAL PROPERTIES or select a topic from the More Reading links shown below.
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