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008 070212s2006 th uu|m rtt 0| a1eng d
035 _a.b12006592
099 9 _aAIT Thesis no.WM-05-11
100 0 _aWiwat Charoensukrungruang
245 1 0 _aAnalysis of rainfall pattern for urban drainage design
260 _aPathum Thani, Thailand :
_bAsian Institute of Technology,
_c2006
300 _a92, [74] p. :
_bill.
490 1 _aThesis ;
_vno. WM-05-11
500 _aA thesis submitted in pa1tial fulfillment of the requirements for the degree of Master of Engineering
502 _aThesis (M.Eng.) - Asian Institute of Technology, 2006
520 _aUrbanization continues to expand; rural areas have become sub-urban areas and have finally become urban areas. A major percentage of their surfaces are hardened and impervious which change runoff characteristic. Runoff in urban areas reacts quickly to rainfall as compared to rural areas due to the significant impervious areas. As a result, increased runoff causes flooding of lowlands in urban area. These areas required drainage structures to prevent flood problem. Design storms are most frequently applied to the calculation of runoff peak flows for the sizing of drainage structure. For this purpose, the best design storm should be selected. The main objectives of this study are to study rainfall characteristic using rainfall data at AIT meteorological station and to derive design storm pattern and then compared to historical storms and field rainfall to determine the most appropriate design storm pattern for AIT. Historical rainfalls at AIT meteorological station were analyzed based on annual maximum rainfall and based on storm duration to develop Depth-Duration-Frequency (DDF) curve and Intensity-Duration-Frequency (IDF) curve. Three design storm namely; Chicago, Yen and Chow and Sifalda design storm were developed from DDF and IDF curve for the duration of 30 minutes to 2 hour depending on historical rainfall which was selected for comparison. These design storms were compared to historical rainfall based on their shape, time to peak and peak intensity. In general, it has been found that Chicago design storm was the most suitable design storm. However, it always gave an overestimation of peak intensity
650 0 _aRain and rainfall
_zThailand
_zPathum Thani
650 0 _aUrban runoff
_zThailand
_zPathum Thani
650 0 _aDrainage
_zThailand
_zPathum Thani
700 0 _aSutat Weesakul,
_eChairperson
700 1 _aClemente, Roberto S.,
_eChairperson
700 1 _aGupta, Ashim Das,
_eExamination Committee
700 1 _aBabel, Mukand Singh,
_eExamination Committee
710 2 _aRoyal Thai Government Fellowship,
_eScholarship Donor
810 2 _aAsian Institute of Technology.
_tThesis ;
_vno. WM-05-11
856 _3Full-Text
_uhttp://203.159.5.9/ait-thesis/detail.php?q=B10696
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