1) A 12 hour rainfall with uniformintensity of 4 cm/hr produces a stormhydrograph of peak discharge 1000m³/s. The abstractions of rainfall is atthe rate of 1 cm/hr and base flow is30 m³/s. Compute the peak dischargeof 12 hour unit hydrograph.2)A hydraulic structure is sized for a50 year recurrence interval designdischarge. What is the risk that theflow capacity will be exceeded duringany future 20 year period? What is theprobability that the 50 year recurrenceinterval peak flow rate will beexceeded in the next 50 years?

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1) A 12 hour rainfall with uniform intensity of 4 cm/hr produces a storm hydrograph of peak discharge 1000 m³/s. The abstractions of rainfall is at the rate of 1 cm/hr and base flow is 30 m³/s. Compute the peak discharge of 12 hour unit hydrograph.

1) A 12 hour rainfall with uniform intensity of 4 cm/hr produces a storm hydrograph of peak discharge 1000 m³/s. The abstractions of rainfall is at the rate of 1 cm/hr and base flow is 30 m³/s. Compute the peak discharge of 12 hour unit hydrograph.

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

Probability, risk and uncertainty analysis for hydrological design

It gives a framework that is financially critical for finding the exceptional designs of hydrological systems with a reduced cost in total inclusive of the project cost and the disaster mitigation cost. But there would be hardly any assessment of a decent quality damage function. Hence, errors in demonstrating the hydrologic events, incorrect model parameters, and so on may occur. Here, we will discuss a specific hydrological design that of a detention basin for studying and understanding the risk-based procedure, uncertainties, and probability analysis by following a systematic framework.

Question

1) A 12 hour rainfall with uniform
intensity of 4 cm/hr produces a storm
hydrograph of peak discharge 1000
m³/s. The abstractions of rainfall is at
the rate of 1 cm/hr and base flow is
30 m³/s. Compute the peak discharge
of 12 hour unit hydrograph.
2)A hydraulic structure is sized for a
50 year recurrence interval design
discharge. What is the risk that the
flow capacity will be exceeded during
any future 20 year period? What is the
probability that the 50 year recurrence
interval peak flow rate will be
exceeded in the next 50 years?

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