June 24, 2008

Please post your answer to Worked Example 2.2 and 2.3 here

Please post your answer to Worked Example 2.2 and 2.3 as comments to this post.

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June 24, 2008

jqalee @ 5:56 am

Group 4's ans

30 60 90 120 150 180 200 250 300 360 480 600 720 1080 1440 2880 4320
3.4012 4.0943 4.4998 4.7875 5.0106 5.1930 5.2983 5.5215 5.7038 5.8861 6.1738 6.3969 6.5793 6.9847 7.2724 7.9655 8.3710
98.8 67.0 51.3 41.8 35.4 30.8 28.4 23.8 20.6 17.7 14.0 11.6 10.0 7.1 5.6 3.2 2.4
116.5 80.2 61.4 50.0 42.3 36.7 33.8 28.3 24.4 21.1 16.7 13.9 12.0 8.7 7.1 4.4 3.5
136.6 92.8 70.4 56.9 48.0 41.6 38.3 32.0 27.7 24.0 19.1 16.1 14.1 10.7 8.9 6.3 5.6
152.4 104.3 78.9 63.6 53.5 46.2 42.5 35.5 30.6 26.5 21.1 17.9 15.7 12.0 10.1 7.6 7.1
169.3 116.6 87.9 70.5 59.0 50.8 46.6 38.7 33.3 28.7 22.8 19.3 16.9 13.0 11.1 8.7 8.4
186.3 129.7 98.1 78.8 65.9 56.8 52.0 43.2 37.1 31.9 25.3 21.3 18.7 14.3 12.2 9.5 9.1

secyleong @ 5:57 am

Penang idf - 100years 30 minutes -186.3

hafizhassan @ 5:58 am

Group 3

ARI a b c d 30 60 90 120 150 180 200 250 300 360 480 600 720 1080 1440 2880 4320
LN(T) 3.4012 4.0943 4.4998 4.7875 5.0106 5.1930 5.2983 5.5215 5.7038 5.8861 6.1738 6.3969 6.5793 6.9847 7.2724 7.9655 8.3710
2 4.5140 0.6729 -0.2311 0.0118 98.8 67.0 51.3 41.8 35.4 30.8 28.4 23.8 20.6 17.7 14.0 11.6 10.0 7.1 5.6 3.2 2.4
5 3.9599 1.1284 -0.3240 0.0180 116.5 80.2 61.4 50.0 42.3 36.7 33.8 28.3 24.4 21.1 16.7 13.9 12.0 8.7 7.1 4.4 3.5
10 3.7277 1.4393 -0.4023 0.0241 136.6 92.8 70.4 56.9 48.0 41.6 38.3 32.0 27.7 24.0 19.1 16.1 14.1 10.7 8.9 6.3 5.6
20 3.3255 1.7689 -0.4703 0.0286 152.4 104.3 78.9 63.6 53.5 46.2 42.5 35.5 30.6 26.5 21.1 17.9 15.7 12.0 10.1 7.6 7.1
50 2.8429 2.1456 -0.5469 0.0335 169.3 116.6 87.9 70.5 59.0 50.8 46.6 38.7 33.3 28.7 22.8 19.3 16.9 13.0 11.1 8.7 8.4
100 2.7512 2.2417 -0.5610 0.0341 186.3 129.7 98.1 78.8 65.9 56.8 52.0 43.2 37.1 31.9 25.3 21.3 18.7 14.3 12.2 9.5 9.1

shuhaili @ 6:04 am

trial blog!

beakko @ 6:10 am

example 2.2
answer from group 1:
Penang idf curve - 2years 30 minutes -98.8

jqalee @ 6:18 am

Group 4's ans

ARF = 0.862
Ip for 50 ARI = 37.9mm/hr
Ic for 50 ARI = Ip x ARF = 37.9 x 0.862
= 32.62 mm/hr

beakko @ 6:18 am

example 2.3
answer from group 1:
Kuching idf curve - 50 years 30 minutes = 145.58

secyleong @ 6:33 am

Group 2 : kuching 50years 180minutes -69.9

jqalee @ 6:37 am

sorry typo error, the correct ans is

ARF = 0.902
Ip for 50 ARI = 78.4mm/hr
Ic for 50 ARI = Ip x ARF = 78.4 x 0.902
= 70.73mm/hr

time period 1==>4.2438
time period 2==>15.5606
time period 3==>24.0482
time period 4==>15.5606
time period 5==>8.4876
time period 6==>2.8292

beakko @ 6:49 am

example 2.3
answer from group 1:
Areal reduction factor = 0.902
Kuching Hyetogragh - 3hr duration, 50yrs ARI storm
step1, I = 13.43899522
step2, I = 16.26825738
step3, I = 13.43899522
step4, I = 11.31704861
step5, I = 9.195101996
step6, I = 7.073155381

hafizhassan @ 7:03 am

Group 3

ARF = 0.9
Ip for 50 ARI = 78.4mm/hr
Ic for 50 ARI = Ip x ARF = 78.4 x 0.9
= 71.4mm/hr

ckng @ 7:21 am

testing

najmah_N @ 7:29 am

i just got my password

Group 3 @ 9:05 am

Example 2.5
Penang, Q100 = 11.7m3/s

Example 2.6
Kuching, Q5 = 26.4m3/s

beakko @ 9:51 am

group 1
example 2.5
Qp= 12.4 m3/s

example 2.6
Qp= 34.1 m3/s

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November 27, 2007

Please Post Your Answer to Worked Example 2.2 Here

Please Post Your Answer to Worked Example 2.2 Here

Results:

No. 1 is Group E <— the Winner.
No. 2 is Group A
No. 3 is Group D
No. 4 is Group B
No. 5 is Group C

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