Work Example 2.3 (Workshop No. 1)

[drquek]

Please post your answer for this worked example here.

2.1.4 Work Example 2.3- Derive Hyetograph for Kuching, Sarawak

Locaton: Kuching, Sarawak

Catchment size: 120 km2

Compute the 3 hr duration, 50 year ARI storm hyetograph.

[drquek]

Step 1- Compute using the spreadsheet from Worked Example 2.1 the IDF for Kuching on using the coefficient a, b, c and d in App13.A1 on Pg 107.

Step 2- Apply the Areal Reduction Factor in Table 2.1 on Pg 25 to the IDF data in Step 1.

Step 3- Go to App 13.B on Pg 109, refer to Table 13.B2- use the temporal pattern for East Coast of Peninsular Malaysia.

For Duration of 180 min ie, 3 hr, use the Fraction of Rainfall in Each Time Period.

For 180 min, it has 6 time steps of .19, .23, .19, .16, .13, .10.

Step 4- Apply the above to the 180 min IDF data computed in Step 2 above.

[fauzi]

2

hyetograph group 4

[yokemeeyau]

Hello, I am Yau.

[zulmaon]

Rainfall 13.44 16.27 13.44 11.95 9.20 7.07
Time period 1.00 2.00 3.00 4.00 5.00 6.00

[hafiz_alhadi]

Rainfall 13.439 16.268 13.439 11.317 9.195 7.073
Time Period 1.00 2.00 3.00 4.00 5.00 6.00