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Çѱ¹¼öÀÚ¿øÇÐȸ / v.26, no.2, 1993³â, pp.49-57
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( Critical Duration of Design Rainfall for the Design of Storm Sewer in Seoul )
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A hydrological method is performed to determine the critical duration of design rainfall for the design of storm sewer in Seoul. To seize the effect of the duration and the temporal distribution of the rainfall to the peak discharge of the storm sewer, the Huff's quartile method is used as a temporal pattern for the design rainfall of any durations (9 cases for 20-240 min.) with 10 years return period. The critical duration of design rainfall is determined as the duration which maximizes the peak discharge. This study is applied to 18 urban drainage systems in Seoul. The ILLUDAS model is applied to runoff analysis, and the result shows that the duration which maximizes peak discharge is 30, 60 minutes generally. The relation diagram between peak discharge for the critical duration and watershed area is prepared for the design of storm sewer.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.26, no.2, 1993³â, pp.49-57
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199311920094429)
¾ð¾î : Çѱ¹¾î
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