도로교통으로 인한 신설학교 교사 내 소음영향 예측방법

Abstract

The purpose of this study was to calculate a correction value for estimating the noise levels in the classrooms of a newly planned school for use in environmental-impact and educational-environment assessments. The study involved measuring and analyzing the outdoor and indoor noise levels in the classrooms of 32 elementary and middle schools located in Yongin-si and Seongnam-si, Gyeonggi-do. In each of the 55 cases, the noise level was measured at a receiver point located 1m in front of the school building facade. At the same time, the indoor noise levels were measured at 2 receiver points located 1m in front of a window and 1m in front of a hallway in the classroom, with all the windows open. These measurements were averaged to calculate the noise level in the classroom. Then, a correction value was calculated based on the difference between the outdoor noise level and noise level in the classroom. Therefore, by considering this correction value for the estimated outdoor noise level during the planning stage, the noise level in the classroom could be determined. The final calculated correction values were −6.4dB(A) for the parallel type, −6.9dB(A) for the vertical type, and −6.5dB(A) for the mixed type. The use of these correction values will reduce the noise impact and resource wastage that could result from over- or underestimating, creating a calm and reasonable educational environment.