What is the 10-yr peak flow in cfs using the rational method at a stormwater inlet for a region with a total area of 60 acres and three different land uses that are shown in the table below? An inlet time of 40 min with rainfall intensity of 4 in./hr for a 10-yr return period is assumed. Area (ac) Runoff coefficient 35 Land use Multi-units, detached Railroad yard areas 10 Business (neighborhood areas) 15 0.5 0.3 0.6

What is the 10-yr peak flow in cfs using the rational method at a stormwater inlet for a region with a total area of 60 acres and three different land uses that are shown in the table below? An inlet time of 40 min with rainfall intensity of 4 in./hr for a 10-yr return period is assumed. Area (ac) Runoff coefficient 35 Land use Multi-units, detached Railroad yard areas 10 Business (neighborhood areas) 15 0.5 0.3 0.6

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

One of the following storms is excessive and causing runoff according to Konhke Select one a . 10 mm rainfall and 6min duration b . 12 mm rainfall and 1.1hour duration c . 22 mm rainfall and 15 min duration d . 15 mm rainfall and 1.2 hour duration
hydrology engineering
Q2. Two storms having duration of 4-hv and 2.hr respectively. If the rainfall excess values for the two storms were 2cm f 3cm respectively occurs Successive calculate the resulting direct runoff hydrographif the 2-hr UH For the Catchment is given below Time hr 2 4 G 10 12 14 16 18 2hr UH 25 50 75 125 100 60 20
B) The rates of rainfall for the successive 30 min period of a 3-hour storm are: 1.6, 3.6, 5.0, 2.8, 2.2, 1.0 cm/hr. The corresponding surface runoff' is estimated to be 3.6 cm. Establish the -index and its coefficient of runoff.
The incremental rainfall intensity data given in the table below were recorded at a gage located on a small urban watershed. Using a 0.5-hour time step: (a) Plot the rainfall Hyetograph. (b) Determine the total rainfall depth during the storm event. (c) If the runoff depth is 4.65 mm, find the phi- index in mm/ hr. Rainfall intensity data- Time (hr) 0- 0.5- 1.0- 1.5- 2.0- 2.5- 3.0- 3.5- 4.0- 4.5- 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 Rainfall Intensity 2 2.5 5 1.5 1 0.5 (mm/hr)
C9
Find the runoff values,
Q5: A) Define Q-index and find it for the below 10 hours duration rain storm hyetograph where the direct runoff is 20 mm during the storm. Time (hrs) Excess Rainfall (cm) Cu 0-2 2-4 4-6 6-8 8-10 0.4 1.0 1.6 2.4 2.0 na with sketch
%VY . Q1: A catchment area is 5 square miles and the total direct Runoff (E D. R = 11150 ft / sec). Estimate the base flow for the data shown in the table below? Time 2 3 4 5. 6. 500 500 1200 2250 2920 2670 2060 1430 Total Flow(ft/sec) 202.57 | 506.43 700.32 627.97 451.44 269.13 11 U.H 10 1100 910 Time 9 12 13 14 15 16 Total 780 650 530 510 510 500 Flow(ft'/sec) U.H 173.6 118.65 81.03 52.09 28.94 11.57 2.89 Q2: Develop a 3-hr synthetic unit hydrograph for the catchment are using Snyder's method only. If the catchment area is 400 kan?, L= 25 kam and La km, assuming C15 and C,-0.7 •,.0 |||||||||||||1||||||| إلغاء إعادة تعي ين