The noise level from a source outside a building is 75 dB(A). The wall material has an overall transmission loss (TL) of 25 dB(A). The wall is made up of 0.5 m² opening and 39.5 m² brick wall. Calculate the noise level inside the building, and the effective transmission loss. Select one: Ⓒa. 58.9 dB(A), 20.1 dB(A) b. 52.9 dB(A), 14.1 dB(A) Oc. 56.9 dB(A), 18.1 dB(A) Od. 54.9 dB(A), 16.1 dB(A)
The noise level from a source outside a building is 75 dB(A). The wall material has an overall transmission loss (TL) of 25 dB(A). The wall is made up of 0.5 m² opening and 39.5 m² brick wall. Calculate the noise level inside the building, and the effective transmission loss. Select one: Ⓒa. 58.9 dB(A), 20.1 dB(A) b. 52.9 dB(A), 14.1 dB(A) Oc. 56.9 dB(A), 18.1 dB(A) Od. 54.9 dB(A), 16.1 dB(A)
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The noise level from a source outside a building is 75 dB(A). The wall material has an overall transmission loss (TL) of 25
dB(A). The wall is made up of 0.5 m² opening and 39.5 m² brick wall. Calculate the noise level inside the building, and the
effective transmission loss.
Select one:
a. 58.9 dB(A), 20.1 dB(A)
b. 52.9 dB(A), 14.1 dB(A)
c. 56.9 dB(A), 18.1 dB(A)
O d. 54.9 dB(A), 16.1 dB(A)
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