MCU19-0132 Applicant's Response - Att 3 Acoustic

FACT SHEET
             values. Cracks may occur due to lack of
             quality control on site (eg lack of curing,
             or incorrect protection procedures on
             site against adverse weather conditions),
             thus providing acoustic leakage paths
             and thus downgrading the overall sound
             rating of the building envelope.

             Precast elements have very high sound
             transmission loss values (i.e sound
             reduction index values) and as such the
             designer needs to address the TL (Rw)
             values of other elements incorporated
             into the panel or building envelope to
             ensure the whole façade

             or envelope is not compromised by
             other elements with lower TL (Rw)values.

             References:

             (1) Precast Concrete Handbook, Sept
             2002

             (2) “Acoustic & Thermal Advantages
             of Concrete” by Paul Uno, ABIC
             Conference 1992 p67-69

             (3) “Concrete in Energy Efficient Design
             & Noise Control” by Paul Uno, TN62,
             CCAA, 1993

             (4) “Acoustics Noise & Buildings”,
             Humphreys & Cowell

             (5) Peter Knowland & Associates
             (Acoustic Consulting Engineers)




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