NOISE CONTROL OF BUILDINGS

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NOISE CONTROL OF BUILDINGS

CONTENT

  1. Introduction
  2. Noise and Health
  3. Ways to Control
  4. Methods to control
  5. Room Acoustic
  6. Wall Construction
  7. Floor construction
  8. Space Planning
  9. HVAC and Elevator soundproofing
  10. Residential Sound Control Practices
  11. Conclusion
  12. References

INTRODUCTION

  • The century of development and immense noise.
  • 24/7 surrounded by noise and sound.
  • Principle: conversion of disturbances into electrical potentials which the brain can sense.
  • Noise from outdoor as well as within the house.
    NOISE: UNWANTED SOUND
  • Noise can impede speech communication.
  • The solution can be noise control.

NOISE AND HEALTH

NOISE CONTROL OF BUILDINGS

Regular exposure to noise may include various physical and psychological health consequences including:
▪ Hearing Impairment
▪ Tinnitus
▪ Hypertension
▪ Ischemic heart disease
▪ Annoyance
▪ Sleep disturbances
▪ Harm to Immune System
▪ Birth defects
▪ Increased incidence of diabetes

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WAYS TO CONTROL

Three BASIC ways to control noise

  1. Replace the sound source with a quieter one.
  2. Block the sound with a solid, heavy material that resists the transmission of sound waves.
  3. Absorb the sound with a light, porous material that soaks up sound waves.

    Acoustical design issues for buildings include site noise considerations, control of noise transfer, establishing noise standards, room acoustics considerations, sound isolation, vibration control, and audio/visual considerations

METHODS

NOISE CONTROL OF BUILDINGS

ROOM ACOUSTICS

NOISE CONTROL OF BUILDINGS

READ FULL TEXT ABOUT ROOM ACOUSTIC – DOWNLOAD HERE

WALL CONSTRUCTION

Standard partition is a single stud wall and one layer of gypsum board on each side, the acoustic performance can be improved by using light gauge metals instead of wood studs. STC (Sound transmission class) is a standard parameter to compare the performance of different construction materials.

SPACE PLANNING

Space planning deals with organizing spaces to avoid adverse adjacencies of noisy equipment like mechanical equipment and electrical transformer with quiet spaces . It can be the most cost-effective noise control technique.

FLOOR CONSTRUCTION

Floor and ceiling provide two acoustical function:

  1. provide separation between adjacent spaces i.e, airborne sound insulation
  2. reduces the sound of footfalls and other impact sounds i.e, impact insulation.
    Using a carpet and a pad or a resilient floor underlayment improves impact insulation.

HVAC NOISE CONTROL

PROBLEMS
Not acoustically treated, noise from heating, ventilating, and air-conditioning equipment can travel from room to room in the home or in the office.
The noise produced by fans and motors of central air equipment can be transmitted throughout the duct system.
High air velocities in the duct system can cause noise-producing turbulence.

SOLUTIONS
Fiberglass duct liner, designed for installation inside sheet metal ductwork to attenuate air rush and central equipment noise as well as to control heat loss or gain through duct walls.
Fiberglass duct board, combining acoustical/thermal insulation with a reinforced foil-kraft air barrier/vapor retarder, from which complete air duct systems may be fabricated.

Protecting Yourself from Elevator Noise- DOWNLOAD HERE

FIVE NOISE CONTROL MISTAKES TO AVOID

  1. Thinking you don’t have a noise problem.
  2. Not considering noise control before a project is started.
  3. Not conducting a detailed study of noisy equipment.
  4. Not using a systematic approach to noise control.
  5. Not sealing air leaks.

CONCLUSION

Noise is becoming a very big problem day to day it is degrading our health and ecological balance as well.
And one cannot remain untouched with this aspect of day to day issues. By introducing noise control in buildings we can create less noisy residential and other constructions. As sound travels directly and throughs reflections, so to improve sound quality reflections should be minimized. For noise control of buildings, we can implement various methods like room acoustics, floor planning, wall construction, and space planning mainly which are practical versions of sound-absorbing and sound insulation.

REFERENCES

HANDBOOK OF NOISE AND VIBRATION CONTROL – MALCOLM J.CROCKER
● NOISE CONTROL IN BUILDINGS BY MC GRAW- HILL.
ENGINEERING OF NOISE CONTROL BY WORLD HEALTH ORGANIZATION
NOISE CONTROL ON BUILDINGS-IJIRT|VOLUME 2 ISSUE 7

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