Fig. 1. Layout of roadside buildings.
Fig. 2. Layout of roadside buildings in target areas.
Fig. 3. Measured noise level at the roadside and backside area and the reduced noise level.
Fig. 4. Location of noise measurement positions.
Fig. 5. Reduced noise levels by distance from sidewalls.
Fig. 6. Reduced noise levels sepending on the height of the buildings.
Fig. 7. Roadside building dimensions affecting the noise level of the backside area.
Fig. 8. Location of noise measurement positions and the division of backside areas (X and Y).
Fig. 9. Reduced noise levels at the backside area (X) by the building height (h).
Fig. 10. Reduced noise levels at the backside area (Y), when the adjacent buildings have same height.
Fig. 11. Reduced noise levels at the backside area (Y) depending on the separation distance (d).
Fig. 12. Reduced noise levels at the Y region by the height difference (Δh) of the adjacent buildings, when the lower building is 4 m high with the separation distance of 1.5 m.
Fig. 13. Layout of roadside buildings in target blocks P & Q.
Table 1. Road width and traffic volume in the 15 target urban blocks.
Table 2. Measured average noise levels of the roadside and backside area. dB(A).
Table 3. Reduced noise levels in the backside area (X) by the building height (h).
Table 4. Difference of reduced noise levels (D) at the backside area X and Y by two factors; separation distance(d) and the height (h) of adjacent buildings [dB(A)].
Table 5. Reduced noise levels at the backside area (Y) depending on the height difference (Δh) of the adjacent two buildings.
Table 6. Road traffic conditions of P and Q blocks.
Table 7. Building height and separation distance of the consecutive buildings in P & Q blocks.
Table 8. Comparison of the reduced noise levels at the X region of P & Q blocks both predicted (H) and measured values [dB(A)].
Table 9. Comparison of the reduced noise levels at the Y region of P & Q blocks both predicted (RN) and measured values [dB(A)].
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