A storm with I1.5 cm precipitation produced a direct runoff of 5.0 cm The duration of the rainfall was 8 hours, and its time distribution is given below Estimate the O index of the storm. * 5 6 Time since start 3. 4 (hours) Cumulative infiltration depth (cm) 1.2 3.8 6. 7.6 8.9 10 10.8 11.5

A storm with I1.5 cm precipitation produced a direct runoff of 5.0 cm The duration of the rainfall was 8 hours, and its time distribution is given below Estimate the O index of the storm. * 5 6 Time since start 3. 4 (hours) Cumulative infiltration depth (cm) 1.2 3.8 6. 7.6 8.9 10 10.8 11.5

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

Flood hydrogrpah.
02: Table below shows a rainfall data gathered from a storm occurred on a watershed area 2851 km² with direct runoff 856 m³/sec. Determine the W and index for this area and check the validity of your solution. Time (hrs) Rainfall 14.3 8.0 7.2 3.8 2.0 (mm) 1 2 3 4 5 6 7 8 1.3 1.0 0.0 9 0.8 10 11 12 13 0.0 13.9 17.2 2.0 14 15 0.9 1.5
I need the answer as soon as possible
4- For a storm of 3 hrs duration, the rainfall rates as follows: t ( minutes) i(cm/hr) 0-30 1.4 30-60 60-90 3.4 4.8 90-120 120-150 3.2 2.0 If the surface run off is 3.4 cm, find and W-indices. Ans: P-index=1.65 cm/hr 50-180 1.2
The table below shows the observed rainfall intensity on a 2.26 km? catchment area. Estimate the o index if the observed runoff is 282 097 m3.
The observed rainfall and discharge of a catchment is given the table. The catchment area is 0.23Km^2. Time (h) 1 2 3 4 5 6 7 8 00 9 10 11 12 13 Rainfall (mm) 0 0 2 6 10 8 2 0 0 0 0 0 0 1. Estimate the base flow. 2. Estimate the surface runoff. 3. Estimate the initial loss 4. Estimate the continuous loss using phi method. Discharge (M3/s) 20 20 20 20 30 50 40 35 25 21 20 20 20
subject: -Hydrology and Water Management
3. For a 2 hour, 8 mm/h intensity rainfall, the hydrograph given in Table is observed. The area of watershed is 500 km² Table: Propeller readings Time 0 flow rate (m³/s) 8 2 4 6 14 18 30 8 10 12 45 38 28 14 16 18 20 22 24. 18. 14 10 a) Obtain 2 hour unit - hydrograph for the considered flow section b) Obtain 4 hour unit- hydrograph for considered flow section. c) Obtain the hydrograph of a rainfall with 4 hour duration and 10 mm/h intensity. 24 8 8
Q1 The following table show the precipitation in (mm/hr.) observed at the rain gages (A, B, and C) which shown in figure below : 1. Find the average precipitation each hr. over the catchment by Thiessen method . 2. Draw a graphical relation between the average precipitation each hr. and the time. 3. Find the (® and W- index), If the runoff volume=108.4 cm.km’ tihr.) 1 2 3 4 s Rain gage A 5 10 25 12 a B 3 7 15 10 2 c a 9 20 12 a R gage 104m Rain gage 2= ain gage
A small catchment basin with an area of 1.93 square miles received a rainfall of 105 mm in 90 minutes due to a storm. At the outlet of the catchment, the stream draining the basin was dry before the storm and later experience a runoff lasting for 10 hours with an average discharge of 1.45 cms when rainfall occurs. The stream was then again dry after the runoff event. a) determine the amount of water that was not available to runoff due to the combined effect of infiltration, evaporation, and transpiration, b) what is the ratio of runoff to precipitation?
A gage on a small (0.75-acre) urban parking lot recorded the following incremental rainfall data. Time (hr) 0 1 Rainfall (cm) 0 5 0.5 4.7 1.5 10 2 12 2.5 3 3.5 10 4.5 3 4 2.3 4.5 0 a. Determine the total storm rainfall depth (in inches). Be careful with units. b. If all of the rainfall occurs as runoff (no losses) and the time base of a triangular hydrograph is 3 hours, find the peak flow of the hydrograph in cfs. Be careful with units.
QUESTIONS The initial rainfall intensities of a storm during dry weather flow are 12, 16, 22, 45, 42, 38, 29, 15, 18, 25, 42, 38, 24, 12 and 3 mm/hr at 20 minutes interval. The area of basin is 750 km² and p index is 18 mm/hr. What will be the runoff volume of the basin, if the initial abstraction is 10 mm?