Acoustic Evaluation of Floating Floor Applications in Mechanical Rooms

Regular paper

Mete Oguc

Ulus Yapi Tesisat Malzemeleri A.S.

Wednesday 3 june, 2015, 15:20 - 15:40

Auditorium 2 (592)

Mechanical and electrical equipment rooms are one of the main sources of noise and vibration in buildings. In high-rise buildings, it is usually inevidable to locate equipment rooms in mid-floors rather than placing them far from noise sensitive areas such as basements or separate structures. The noise from the mechanical equipment such as chillers, circulation pumps, air handling units in these spaces can travel via air and through structure to adjacent occupant spaces. Structure-born noise from the machinary excitation transmited as impact sound and vibration can be isolated by choosing proper vibration isolators. Yet, air-borne and flanking noise transmission from the flooring should still be carefully treated. Installing a floating floor provides high levels of air-borne and flanking sound reduction in such cases. A floating floor is either constructed by using an airgap or a resilient layer. To provide an airgap, spring or rubber type mounts are utilized. A composite sound transmission loss value for such different types of floating floor applications are calculated and presented in this paper.

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