In a storm of 210 minutes duration, the incremental rainfall at various time intervals is given below. Time since start of the storm (minutes) Incremental rainfall in the time interval (cm) 30 1.75 60 2.25 90 6.00 120 4.50 150 2.50 180 1.50 210 0.75 O 4.5 cm/hr O 2.8 cm/hr O 5.5 cm/h O 3.2 cm/hr O None of the choices

In a storm of 210 minutes duration, the incremental rainfall at various time intervals is given below. Time since start of the storm (minutes) Incremental rainfall in the time interval (cm) 30 1.75 60 2.25 90 6.00 120 4.50 150 2.50 180 1.50 210 0.75 O 4.5 cm/hr O 2.8 cm/hr O 5.5 cm/h O 3.2 cm/hr O None of the choices

Traffic and Highway Engineering

5th Edition

ISBN:9781305156241

Author:Garber, Nicholas J.

Publisher:Garber, Nicholas J.

Chapter16: Highway Drainage

Section: Chapter Questions

Problem 4P

See similar textbooks

Similar questions

A one-day rainfall of 20.0 cm at a place X was found to have a period of 100 years. Calculate the probability that a one-day rainfall of magnitude equal to or larger than 20.0 cm.a) Will not occur at station X during the next 50 years. (Ans. 0.605)b) Will occur in the next year. (Ans. 0.01)c) Will occur once in 10 successive years
Calculate the rainfall intensity using the formula shown below for a rainfall duration of 13 minutes if the constant A=3454 and B=20. Formula: I (mm/hr) = A/[ t (in min) + B]
B- The mass curve of rainfall in the storm of total duraƟon 300 minutes is given below. Draw the hyetograph of the storm at 60 minutes interval step and intensity in cm/hr.(Show by calculaƟons )
A small urbanized area having smooth bare packed soil is to be drained by means of storm sewer system. The distance from the most remote point on the boundary to the upstream manhole is 200 m. For a 50- minute storm with an effective rainfall intensity of 70 mm/hr, So is 0.005 and n=0.016. Determine the time of concentration using;a) Kinematic wave equationb) NRSC methodc) Kirpich equationd) Izzard equatione) Kerby equation
According to the rainfall records for a city, we have obtained the probabilities of receiving more than 500 mm of rain in four seasons (see the table below). If a seasonal recorded rainfall depth is found to be more than 500 mm, what are the probabilities of this rainfall record for four seasons? Comment benefit of using this observed rainfall record. Spring Summer Autumn Winter 0.05 0.6 0.7 0.15
The ordinates of a 6h-UH are given: A storm has three successive 6-h intervals of rainfall magnitude of 3.0, 5.0, and 4.0 cm, respectively. Assuming a φ-index of 0.20 cm/hr and a base flow of 30m3/s, determine the plot of the resulting hydrograph of flow. Hint: Note that the storms follow a certain sequence: The 3cm rain is followed by the 5cm rain and then the 4cm rain, all of which are 6 hours in duration. The ordinates of the 5-cm DRH are lagged by 6 hours and the 4-cm DRH is lagged by 12 hrs. Using the method of superposition, the ordinates of the resulting 12cm hydrograph is obtained by combining the ordinates of the 3 DRHs.
Instruction: If the rainfall data are expressed in millimeters, compute for the average precipitation over the area given below using Arithmetic Average. (Hydrology)
Plot the hyetograph of 20 min for this storm event over a specified watershed using the rainfall data given in the Table Q1. Indicate what is the storm duration and the total quantity of rainfall over this catchment area. 12:00 11:40 11:20 11:00 10:40 10:20 10:00 Time (hr) 107 107 82 57 32 16 0 Rainfall in successive intervals (mm)
During a storm event in a certain period, the rainfall intensity is 6.5 cm/hour and the - index is 4.5 cm/hour. The intensity of effective rainfall (in cm/hour up to one decimal place) for this period is
Hello, in this question the average rainfall need to be calculated by the use of Thiessen polygons.
Develop a hyetograph for the following rainfall data. Plot the intensity (in/hr) for each interval. Time (hr) Cumulative Rain (in) 0 0.00 2 0.08 4 0.84 6 1.26 8 1.4 10 1.5
There is 10 rain gauge stations in a catchment. The annual rainfalls recorded by the gauges are the following: 102.3cm, 181.12cm 123.4cm, 43.5cm, 112.23cm, 88.89cm, 75.5cm, 69.69cm, 97.87cm, 111.11cm. For an 8% error in the estimation of mean rainfall, calculate the optimum number of stations in the catchment.