Risk, Reliability and Safety Factor
There are always some uncertainties associated with estimation of hydrological design values (such as design flood discharge and river stage during design flood). For example: Suppose a weir is designed for 75 years with an estimated flood of return period 125 years. Now, if the flood is more than estimated value in 75 years only, then weir may fail.
Thus, some terms are defined to deal with these uncertainties which are given as below:
- Risk, R
It is defined as probability of occurrence of an event at least once over a period on n successive years for given return period. Mathematically,
- Reliability, Re
Uncertainties may arise out of structural, constructional, operational and environmental causes as well as from non-technological consideration such as economic, sociological and political causes in a water resources development project.
- Saftey factor
A safety factor for a given hydrological parameter M is given as
<< Previous | Next >>
Must Read: What is Hydrology in Civil Engineering?
Dear Aspirants,
Your preparation for GATE, ESE, PSUs, and AE/JE is now smarter than ever — thanks to the MADE EASY YouTube channel.
This is not just a channel, but a complete strategy for success, where you get toppers strategies, PYQ–GTQ discussions, current affairs updates, and important job-related information, all delivered by the country’s best teachers and industry experts.
If you also want to stay one step ahead in the race to success, subscribe to MADE EASY on YouTube and stay connected with us on social media.
MADE EASY — where preparation happens with confidence.
MADE EASY is a well-organized institute, complete in all aspects, and provides quality guidance for both written and personality tests. MADE EASY has produced top-ranked students in ESE, GATE, and various public sector exams. The publishing team regularly writes exam-related blogs based on conversations with the faculty, helping students prepare effectively for their exams.
