Problem 3. A 50-ha catchment has the following time-area relationship. Estimate the runoff hydrograph (cfs) using the time-area method for a 30-min rainfall hyetograph given. Time (min) Contributing area (na) 1 10 2 15 20 10 25 30 30 50 Time (min) Average rainfall intensity (cm/hr) 0-5 10 5-10 10-15 6. 15-20 4. 20-25 3 25-30 1

Problem 3. A 50-ha catchment has the following time-area relationship. Estimate the runoff hydrograph (cfs) using the time-area method for a 30-min rainfall hyetograph given. Time (min) Contributing area (na) 1 10 2 15 20 10 25 30 30 50 Time (min) Average rainfall intensity (cm/hr) 0-5 10 5-10 10-15 6. 15-20 4. 20-25 3 25-30 1

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

Question 8. [2 Points] Create a 60-minute hydrograph for a 10-acre flat lawn covered with yellow bluestem grass on clayey loam soil and the time of concentration = 20 minutes. A 10-year storm frequency is to be considered. Calculate the volume of the storm runoff.
please show steps
Hand written should be avoided.
Derive a 2-hr unit hydrograph using the Snyder method for a watershed of 70 km2 area, with a main stream that is 9 km long. Also, the distance measured from the watershed outlet to a point on the stream nearest to the centroid of the watershed is 5 km. Take Ct = 3.0 and Cp = 0.70. Graph the 2-hr unit hydrograph for the watershed.
QI. (a) Describe the Rational' method of designing surface water drainage systems. Define fully any terms used in the description. Discuss the assumptions made in applying the rational method, and comment upon the procedure used to predict the peak flow for a given return period. (b) At the beginning of the month of June, water level of a reservoir with surface area of 7km? was at 20m (Refer to reservoir characteristic curve in Figure Qla). Average longterm monthly rainfall for the month of June recorded at five raingages is summarized in Table Q1 (assuming the same average amount of rainfall is also recorded in the reservoir). The inflow to the reservoir X, located at the downstream catchment outfall, resulted from that rainfall can be estimated as Qin = 0.65PA where P is mean areal rainfall (to be estimated by Thiessen Polygon) from a 36km? catchment area A, schematically shown in Figure lb. An average monthly withdrawal of 6MCM from the reservoir is required for water supply…
An 40-ha watershed was subjected to a 5- year rainfall with a depth of 122 mm with characteristics given below. Compute for the peak runoff of the watershed. Hydrologic Soil Group Land Use, Area Curve Treatment, and (ha) Number Condition Row crop, 24 82 contoured, good Woodland, good В 16 55
Show full solution.According to rainfall data collected by a laboratory during storm events, the precipitation level in inches (X) varies jointly with runoff in cubic feet per second (Y). The joint probability mass function (PMF) of both variables are given by the following Table: Y 1 2 3 10 0.05 0.15 0 20 0.1 0.25 0.25 30 0 0.1 0.1 a. Determine and plot the marginal PMF of runoff.b. Determine the correlation coefficient between X and Y.
How to conduct an analysis of a water discharge? Daily discharge measurements and rainfall data are provided. I need to determine whether the water discharge is sufficient for the irrigation area.
Question 3 Explain the different methods in measuring precipitation over a catchment area. Describe their advantages and disadvantages as well. describe at least 3 methods. Method Short Definition Advantage Disadvantage 1. 2. 3.