A cipolletti weir has length of 2.0 m and head over the weir is 1 m. What is the discharge over the weir? (Take Cd = 0.62) 

This question was previously asked in
UPSC ESE (Prelims) Civil Engineering 19 Feb 2023 Official Paper
View all UPSC IES Papers >
  1. 10.35 m3/s
  2. 3.66 m3/s
  3. 45.21 m3/s
  4. 75.68 m3/s

Answer (Detailed Solution Below)

Option 2 : 3.66 m3/s
Free
ST 1: UPSC ESE (IES) Civil - Building Materials
20 Qs. 40 Marks 24 Mins

Detailed Solution

Download Solution PDF

Concept:

Discharge over a cipolletti weir:

Where Q = discharge

Cd = coefficient of discharge

L = width of weir

H = depth of flow over weir crest

Calculation:

Given, L = 2 m, H = 1 m and √2g = 4.43, Cd = 0.62

Discharge is

 = 3.66 m3/s  

 

Latest UPSC IES Updates

Last updated on Jun 23, 2025

-> UPSC ESE result 2025 has been released. Candidates can download the ESE prelims result PDF from here.

->  UPSC ESE admit card 2025 for the prelims exam has been released. 

-> The UPSC IES Prelims 2025 will be held on 8th June 2025.

-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.

-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.

Hot Links: teen patti master king teen patti star apk teen patti vip