Yeni Yerleşke Projesi: A Dome’s Double-Edged Sword
Designing acoustics for a dome-shaped hall requires balancing beauty with functionality. The Main Hall’s dome, while visually impressive, is a concave surface that can act like a giant satellite dish for sound. Curved ceilings naturally tend to concentrate and reflect sound waves to specific points, creating areas of overly loud sound and other areas where sound drops off. In an untreated state, a clap or raised voice under the dome could ricochet and return as a distinct echo. Moreover, the sheer volume of the hall (with its high ceiling and ample space) meant sound could linger, leading to a reverberation time far above what’s comfortable for clear speech. For an auditorium meant to host speeches and discussions, this was a critical issue – intelligibility would suffer if every word bounced around the room.
The Solution: Seamlessly Sound-Absorptive Surfaces
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High-Performance Acoustic Layer: We fitted the dome’s interior with a layer of specialized mineral wool acoustic boards, selected for their excellent sound absorption. These boards, when combined with the Straight Up plaster finish, give the treated surfaces a Noise Reduction Coefficient (NRC) of ~0.90, meaning they absorb the vast majority of incident sound. By covering the broad expanse of the dome and high walls, we effectively turned those formerly reflective surfaces into sound-absorbing ones, dramatically shortening the reverberation in the hall.
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Invisible Integration: Over the acoustic boards, our team applied Straight Up acoustical plaster to create a smooth, continuous finish. Once cured , this plastered surface is indistinguishable from the original drywall or concrete finish. The dome retains its pristine white, unsegmented look – there are no visible panels or seams. This was crucial to meet the design requirement; the hall’s interior visuals remain clean and uninterrupted, with the acoustic treatment completely hidden in plain sight.
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Local Expertise and Execution: The on-site installation was expertly project-managed by our Turkish representative, M Arti Yapi. Under M Arti Yapi’s coordination, the acoustic materials were installed without incident. The team ensured that the application methods were non-intrusive to the building structure and adhered to local building standards. Additionally, all materials used are fire-safe (Class A per ASTM E84) and durable, aligning with stringent safety requirements for public venues.