Rainfall Intensity and Depth
6
VALUES OF RAINFALL INTENSITY AND DEPTH AT KUALA LUMPUR FOR VARIOUS RETURN PERIOD AND RAINFALL DURATION RETURN PERIOD RAINFALL DURATION COEFFICIENTS OF THE FITTED EQUATION FOR KUALA LUMPUR R (years) t (minutes) a b c d mm/hr 2 30 5.3255 0.1806 -0.1322 0.0047 4.595 99.02 2 35 5.3255 0.1806 -0.1322 0.0047 4.508 90.72 2 40 5.3255 0.1806 -0.1322 0.0047 4.429 83.82 2 45 5.3255 0.1806 -0.1322 0.0047 4.357 77.99 2 50 5.3255 0.1806 -0.1322 0.0047 4.290 72.98 2 55 5.3255 0.1806 -0.1322 0.0047 4.229 68.63 2 60 5.3255 0.1806 -0.1322 0.0047 4.171 64.80 5 30 5.1086 0.5037 -0.2155 0.0112 4.770 117.86 5 35 5.1086 0.5037 -0.2155 0.0112 4.679 107.63 5 40 5.1086 0.5037 -0.2155 0.0112 4.596 99.13 5 45 5.1086 0.5037 -0.2155 0.0112 4.521 91.93 5 50 5.1086 0.5037 -0.2155 0.0112 4.452 85.77 5 55 5.1086 0.5037 -0.2155 0.0112 4.387 80.41 5 60 5.1086 0.5037 -0.2155 0.0112 4.327 75.72 10 30 4.9696 0.6796 -0.2584 0.0147 4.870 130.35 10 35 4.9696 0.6796 -0.2584 0.0147 4.780 119.12 10 40 4.9696 0.6796 -0.2584 0.0147 4.698 109.75 10 45 4.9696 0.6796 -0.2584 0.0147 4.623 101.81 10 50 4.9696 0.6796 -0.2584 0.0147 4.554 94.99 10 55 4.9696 0.6796 -0.2584 0.0147 4.489 89.07 10 60 4.9696 0.6796 -0.2584 0.0147 4.429 83.88 100 30 5.0064 0.8709 -0.307 0.0186 5.149 172.24 100 35 5.0064 0.8709 -0.307 0.0186 5.058 157.28 100 40 5.0064 0.8709 -0.307 0.0186 4.975 144.77 100 45 5.0064 0.8709 -0.307 0.0186 4.899 134.15 100 50 5.0064 0.8709 -0.307 0.0186 4.829 125.04 100 55 5.0064 0.8709 -0.307 0.0186 4.763 117.13 100 60 5.0064 0.8709 -0.307 0.0186 4.702 110.21 =a+bln(t)+c(ln(t))^2+d ---- Equation 13.2 I =Pd /d ---- Equation 13.4 R It R It R It ln ln
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Transcript of Rainfall Intensity and Depth
Rainfall intensity & depthVALUES OF RAINFALL INTENSITY AND DEPTH AT KUALA LUMPUR FOR VARIOUS RETURN PERIOD AND RAINFALL DURATIONRETURN PERIODRAINFALL DURATIONCOEFFICIENTS OF THE FITTED EQUATION FOR KUALA LUMPURR ItR ItR PtR (years)t (minutes)abcdmm/hrmm2305.32550.1806-0.13220.00474.59599.0249.512355.32550.1806-0.13220.00474.50890.7252.922405.32550.1806-0.13220.00474.42983.8255.882455.32550.1806-0.13220.00474.35777.9958.492505.32550.1806-0.13220.00474.29072.9860.822555.32550.1806-0.13220.00474.22968.6362.912605.32550.1806-0.13220.00474.17164.8064.805305.10860.5037-0.21550.01124.770117.8658.935355.10860.5037-0.21550.01124.679107.6362.795405.10860.5037-0.21550.01124.59699.1366.095455.10860.5037-0.21550.01124.52191.9368.955505.10860.5037-0.21550.01124.45285.7771.475555.10860.5037-0.21550.01124.38780.4173.715605.10860.5037-0.21550.01124.32775.7275.7210304.96960.6796-0.25840.01474.870130.3565.1810354.96960.6796-0.25840.01474.780119.1269.4910404.96960.6796-0.25840.01474.698109.7573.1710454.96960.6796-0.25840.01474.623101.8176.3610504.96960.6796-0.25840.01474.55494.9979.1610554.96960.6796-0.25840.01474.48989.0781.6510604.96960.6796-0.25840.01474.42983.8883.88100305.00640.8709-0.3070.01865.149172.2486.12100355.00640.8709-0.3070.01865.058157.2891.75100405.00640.8709-0.3070.01864.975144.7796.51100455.00640.8709-0.3070.01864.899134.15100.61100505.00640.8709-0.3070.01864.829125.04104.20100555.00640.8709-0.3070.01864.763117.13107.37100605.00640.8709-0.3070.01864.702110.21110.21R It=a+bln(t)+c(ln(t))^2+d(ln(t))^3----Equation 13.2I=Pd /d----Equation 13.4
lnln
2 YEARS RAINFALL INTENSITY AND DEPTH FOR 2 YEARS RETURN PERIODAT KUALA LUMPUR ,2 P24h=100RAINFALL DURATIONP30P60Pd2 Itt (minutes)Fdmmmmmmmm/hr52.0849.5164.8017.71212.4861.9249.5164.8020.15201.5371.7649.5164.8022.60193.7181.6049.5164.8025.05187.8591.4449.5164.8027.49183.28101.2849.5164.8029.94179.63111.1849.5164.8031.41171.31121.0949.5164.8032.87164.37130.9949.5164.8034.34158.50140.9049.5164.8035.81153.47150.8049.5164.8037.28149.11160.7349.5164.8038.29143.58170.6749.5164.8039.30138.69180.6049.5164.8040.31134.35190.5449.5164.8041.31130.47200.4749.5164.8042.32126.97210.4249.5164.8043.04122.98220.3849.5164.8043.76119.35230.3349.5164.8044.48116.03240.2849.5164.8045.20113.00250.2449.5164.8045.92110.20260.1949.5164.8046.64107.62270.1449.5164.8047.35105.23280.0949.5164.8048.07103.01290.0549.5164.8048.79100.95300.0049.5164.8049.5199.02Pd=P30 - FD(P60-P30)---Equation 13.3I=Pd /d---Equation 13.4
&CAppendix 10.2
5 YEARS RAINFALL INTENSITY AND DEPTH FOR 5 YEARS RETURN PERIODAT KUALA LUMPUR ,2 P24h=100RAINFALL DURATIONP30P60Pd5Itt (minutes)Fdmmmmmmmm/hr52.0858.9375.7224.01288.0861.9258.9375.7226.69266.9371.7658.9375.7229.38251.8381.6058.9375.7232.07240.5091.4458.9375.7234.75231.68101.2858.9375.7237.44224.63111.1858.9375.7239.05213.00121.0958.9375.7240.66203.31130.9958.9375.7242.27195.11140.9058.9375.7243.89188.08150.8058.9375.7245.50181.99160.7358.9375.7246.61174.77170.6758.9375.7247.71168.40180.6058.9375.7248.82162.74190.5458.9375.7249.93157.68200.4758.9375.7251.04153.12210.4258.9375.7251.83148.08220.3858.9375.7252.62143.50230.3358.9375.7253.41139.32240.2858.9375.7254.20135.49250.2458.9375.7254.98131.96260.1958.9375.7255.77128.71270.1458.9375.7256.56125.69280.0958.9375.7257.35122.90290.0558.9375.7258.14120.29300.0058.9375.7258.93117.86Pd=P30 - FD(P60-P30)---Equation 13.3I=Pd /d---Equation 13.4
10 YEARS RAINFALL INTENSITY AND DEPTH FOR 10 YEARS RETURN PERIODAT KUALA LUMPUR ,2 P24h=100RAINFALL DURATIONP30P60Pd10Itt (minutes)Fdmmmmmmmm/hr52.0865.1883.8826.28315.4161.9265.1883.8829.28292.7671.7665.1883.8832.27276.5881.6065.1883.8835.26264.4591.4465.1883.8838.25255.01101.2865.1883.8841.24247.46111.1865.1883.8843.04234.76121.0965.1883.8844.83224.17130.9965.1883.8846.63215.21140.9065.1883.8848.42207.53150.8065.1883.8850.22200.88160.7365.1883.8851.45192.95170.6765.1883.8852.69185.96180.6065.1883.8853.92179.74190.5465.1883.8855.16174.18200.4765.1883.8856.39169.17210.4265.1883.8857.27163.63220.3865.1883.8858.15158.59230.3365.1883.8859.03153.99240.2865.1883.8859.91149.77250.2465.1883.8860.79145.89260.1965.1883.8861.66142.30270.1465.1883.8862.54138.99280.0965.1883.8863.42135.90290.0565.1883.8864.30133.04300.0065.1883.8865.18130.36Pd=P30 - FD(P60-P30)---Equation 13.3I=Pd /d---Equation 13.4
&CAppendix 10.4
100 YEARS RAINFALL INTENSITY AND DEPTH FOR 100 YEARS RETURN PERIODAT KUALA LUMPUR ,2 P24h=100RAINFALL DURATIONP30P60Pd100Itt (minutes)Fdmmmmmmmm/hr52.0886.12110.2136.01432.1561.9286.12110.2139.87398.6771.7686.12110.2143.72374.7681.6086.12110.2147.58356.8291.4486.12110.2151.43342.87101.2886.12110.2155.28331.71111.1886.12110.2157.60314.17121.0986.12110.2159.91299.55130.9986.12110.2162.22287.18140.9086.12110.2164.54276.58150.8086.12110.2166.85267.39160.7386.12110.2168.44256.64170.6786.12110.2170.03247.16180.6086.12110.2171.62238.73190.5486.12110.2173.21231.18200.4786.12110.2174.80224.39210.4286.12110.2175.93216.94220.3886.12110.2177.06210.17230.3386.12110.2178.19203.99240.2886.12110.2179.33198.32250.2486.12110.2180.46193.10260.1986.12110.2181.59188.29270.1486.12110.2182.72183.83280.0986.12110.2183.86179.69290.0586.12110.2184.99175.84300.0086.12110.2186.12172.24Pd=P30 - FD(P60-P30)---Equation 13.3I=Pd /d---Equation 13.4
&CAppendix 10.5
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