NOISE CONTROL OF BUILDINGS Source Flojects in CONTENTS

NOISE CONTROL OF BUILDINGS Source: Flojects. in

CONTENTS • • Introduction Sound and noise Room acoustics Floor construction Space planning Noise control for main building equipment Conclusion

INTRODUCTION • Noise is unwanted sound. It can cause hearing loss, disturb communication or cause nuisance. • Noise control is a set of strategies to reduce noise

SOUND AND NOISE • Sound is a form of energy that is transmitted by pressure vibrations or vibrations that travel through the air or other medium. • Sound waves combine and reach a listener via direct and indirect pathways. • Noise nuisance is excessive noise or disturbance that may have a negative effect on health.

ROOM ACOUSTICS • Room acoustics pertains to the physical characteristics of a space for the hearing of direct and reflected sound. • The persistence of the sound creates unwanted Rooms with high level of reflected sound may have poor room acoustics depending on the use of the room since background noise and interferes with the ability to understand speech.

Acoustic blocks Concert halls demands very carefull acoustic analysis

FLOOR CONSTRUCTION • Floor construction and assemblies perform two acoustical functions. • Like walls, they provide and acoustical between adjacent spaces but they also reduce the sound of footfalls around and other impact sounds from an floor an upper floor.

SPACE PLANNING • Space the can be the most cost-effective noise control technique. • Avoid locating mechanical equipment rooms and electrical transfer rooms near spaces that require low background noise levels.

NOISE CONTROL FOR MAIN BUILDING EQIUPMENT • Large fans used as part of the air conditioning system in a building are source of a significant amount of unwanted noise. • The quietest type of the fan that will satisfy the operating requirement should be selected whenever possible to reduce the need for mitigation measures. • The cost of mitigation may exceed the

CONCLUSION • As the architectural and engineering design of project evolves the design should be reviewed in light of the agreed upon acoustical program requirement for the building project. • A city or state building official cannot be expected to comment on the acoustical design in the contract documents.

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