Answered: Time 1 123 4 5 6 7 8 9 10 11 12 Runoff…

Time 1 123 4 5 6 7 8 9 10 11 12 Runoff (cfs) 130 170 300 600 696 727 602 512 315 210 90 60 Base flow (cfs) 130 130 130 130 130 130 130 130 130 110 90 60

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with. 

Question

Using the total direct runoff hydrograph given, derive a 2 hour unit hydrograph for the 2,850 acre drainage area. The rainfall duration was 2 hours and the total precipitation was 6 inches.

Time
1
234
5
6
7
8
9
10
11
12
Runoff (cfs)
130
170
300
600
696
727
602
512
315
210
90
60
Base flow (cfs)
130
130
130
130
130
130
130
130
130
110
90
60

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Step 1: Calculation of 2 hrs UH

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Similar questions

Problem 4.11. Assuming a dimesionless hydrograph is applicable, determine the duration of flow if the peak runoff is 8.5 m³/s (300 cfs) and the volume of flow is 100 mm (4 in.) for a 50-year storm from an 85-ha (210 ac) watershed. What are the coordinates for point n on the design hydrograph?
Read the question carefully and give me right solution according to the question
C9
The ordinates of a 6h-UH of a watershed having a drainage area of 393 km^2 are given below. For a storm over the watershed having excess rainfall of 5 cm for the first six hours and 15 cm for the second six hours, compute the direct runoff hydrograph ordinates and plot the hydrograph. Compute the depth of direct runoff in cm. Assuming constant baseflow of 100 m^3/s, compute the storm hydrograph ordinates and plot the hydrograph. (List all the DRH ordinates in order, separated by a single space.)
Along a day, precipitation is monitored four times with equal time intervals. The recorded data were 10, 12, 16, 8 mm for a catchment has an area of 3000m2. If the measured runoff in this day was 90m3, the infiltration rate is equal to
Find the runoff values,
2 %V9 li. 3 (9 This question requires one response per row The base flow for this direct runoff hydrograph is: 0 4 8h o Index = 0.135 cm/h Rainfall excess = 5.52 cm 30 25 20 15 Direct runoff 5.52 cm 10 A Base flow -6 0 12 18 24 30 36 42 48 54 60 66 Time in hours -6 8 5.52 48 Discharge (m/s) 3.26 cm 2.26cm