Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia

Gemechu Mosisa

doi:doi:10.11648/j.ajce.20241201.14

Research Article |

| Peer-Reviewed

Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia

Gemechu Mosisa

Published in American Journal of Civil Engineering (Volume 12, Issue 1)

Received: 26 December 2023 Accepted: 11 January 2024 Published: 23 January 2024

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

Diversion weir structures are constructed to withdraw a portion of the stream flow to meet the different water demands to the required place and quantity. These structures, though physically seem small pieces of engineering work, the consideration for structural analysis makes their design complex. Primary data included field observations and measurements, while secondary data included design documentation. In the design, the summation of vertical forces (shear resistance) was more than the summation of horizontal forces (Fh) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against sliding was determined to be 5.9 and 4.3 respectively which is greater than the optional value (i.e.1). In the design, the resisting moment (Mr) is greater than that of the destabilizing moment (Md) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against overturning was determined to be 2.5 and 2.1 respectively which is greater than the optional value (i.e.2); this indicates that the weir was safe against overturning. Basaka diversion weir was checked for stability against overstressing for dynamic and static conditions on the site at the time of the study is 0.34 and 0.29 respectively; the result indicates that the structure was safe against tension for the selected condition which is greater than the optional value (i.e. B/6) at designed bottom width. Performance evaluation revealed that the designed weir cross-section of Basaka was accommodating peak flood. In general, the constructed weir has no more engineering design problems that cause low performance but with a lack of well scheme administration, the major problems occurred as field observation results indicate.

Published in	American Journal of Civil Engineering (Volume 12, Issue 1)
DOI	10.11648/j.ajce.20241201.14
Page(s)	27-31
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Overturning, Performance Indicators, Sliding, Tension, Weir

References

[1]	S. Garg, “Irrigation Engineering And Hydraulic Structures. Khanna Publishers, Delhi. Nineteenth Revised Edition.,” 2005.
[2]	G. Asawa, “Irrigation And Water Resource Engineering. New Age International Publishers. New Delhi.,” 2008.
[3]	M. Bibhabasu, “Diversion Head Works, Module. Sal Institute Of Engineering And Reaserch June,” 2012.
[4]	M. W. Hora, “Assessment Of Design Practices And Performance Of Diversion Weir In Small Scale Irrigation (Case Study From Projects In Western Oromia, Ethiopia),” 2016.
[5]	D. K. Temesgen, “Performance Evaluation Of Tibila Irrigation Based Development Project Diversion Headwork, Ethiopia,” 2017.
[6]	F. Ertiro, S. M. Pingale, And A. N. Wagesho, “Evaluation Of Failures And Design Practices Of River Diversion Structures For Irrigation: A Revisit Of Two Ssi Schemes In Ethiopia,” Int. J. Earth Sci. Eng., Vol. 10, No. 03, Pp. 495–505, 2017, Doi: 10.21276/Ijee.2017.10.0305.
[7]	F. Gurmecha, “(AASTU) Diversion Weir Design Project (Asher River) Approval Page Members Of The Examining Board :,” No. May, 2017.
[8]	B. Belango, “Performance Evaluation Of Diversion Headwork Structures For Irrigation: Case Study On Agega-1, Agega-2 And Sana Irrigation Schemes In Kembata Tembaro Zone, Snnpr, Ethiopia,” 2021.
[9]	B. Sisay, “Assessment Of Design Practices And Performance Of Small-Scale Diversion Weirs Constructed For Irrigation Project (A Case Study Of Ashar And Upper Kuashini Small-Scale Irrigation Schemes In Awi Zone, Dangla Woreda),” 2022.
[10]	T. Mulugeta And W. Tadesse, “Assessment Of Irrigation Scheme Failure Factors : A Case Study On Marza Irrigation Scheme Fogera, Amhara, Ethiopia,” Water Conserv. Sci. Eng., Pp. 465–474, 2022, Doi: 10.1007/S41101-022-00155-Y.
[11]	E. Abel, “Investigation Of Causes Of Diversion Weir Failure (A Case Study On Marza Small-Scale Irrigation Scheme, South Gondar, Ethiopia),” 2021.
[12]	K. Dereje, “Performance Evaluation Of Tibila Irrigation Based Development Project Diversion Headwork, Ethiopia,” 2017.
[13]	A. Endalew, “Investigation Of Causes Of Diversion Weir Failure (A Case Study On Marza Small-Scale Irrigation Scheme, South Gondar, Ethiopia),” 2021.
[14]	T. K. Kebede, “Assessment Of Design Practices And Performance Of Diversion Weir In Small Scale Irrigation (A Case Studies In Offiya Irrigation Project),” 2021.
[15]	JICA, “Headwork Design Manual,” 2010.
[16]	H. Fikru, “Performance Assessment Of Diversion Head Works Implemented For Irrigation: Case Of Fentale Irrigation Based Development Project. Msc, Thesis.,” 2014.

Cite This Article

Plain Text BibTeX RIS

APA Style

Mosisa, G. (2024). Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. American Journal of Civil Engineering, 12(1), 27-31. https://doi.org/10.11648/j.ajce.20241201.14

Copy | Download

ACS Style

Mosisa, G. Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. Am. J. Civ. Eng. 2024, 12(1), 27-31. doi: 10.11648/j.ajce.20241201.14

Copy | Download

AMA Style

Mosisa G. Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. Am J Civ Eng. 2024;12(1):27-31. doi: 10.11648/j.ajce.20241201.14

Copy | Download

@article{10.11648/j.ajce.20241201.14,
  author = {Gemechu Mosisa},
  title = {Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia},
  journal = {American Journal of Civil Engineering},
  volume = {12},
  number = {1},
  pages = {27-31},
  doi = {10.11648/j.ajce.20241201.14},
  url = {https://doi.org/10.11648/j.ajce.20241201.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20241201.14},
  abstract = {Diversion weir structures are constructed to withdraw a portion of the stream flow to meet the different water demands to the required place and quantity. These structures, though physically seem small pieces of engineering work, the consideration for structural analysis makes their design complex. Primary data included field observations and measurements, while secondary data included design documentation. In the design, the summation of vertical forces (shear resistance) was more than the summation of horizontal forces (Fh) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against sliding was determined to be 5.9 and 4.3 respectively which is greater than the optional value (i.e.1). In the design, the resisting moment (Mr) is greater than that of the destabilizing moment (Md) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against overturning was determined to be 2.5 and 2.1 respectively which is greater than the optional value (i.e.2); this indicates that the weir was safe against overturning. Basaka diversion weir was checked for stability against overstressing for dynamic and static conditions on the site at the time of the study is 0.34 and 0.29 respectively; the result indicates that the structure was safe against tension for the selected condition which is greater than the optional value (i.e. B/6) at designed bottom width. Performance evaluation revealed that the designed weir cross-section of Basaka was accommodating peak flood. In general, the constructed weir has no more engineering design problems that cause low performance but with a lack of well scheme administration, the major problems occurred as field observation results indicate.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia
AU  - Gemechu Mosisa
Y1  - 2024/01/23
PY  - 2024
N1  - https://doi.org/10.11648/j.ajce.20241201.14
DO  - 10.11648/j.ajce.20241201.14
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 27
EP  - 31
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20241201.14
AB  - Diversion weir structures are constructed to withdraw a portion of the stream flow to meet the different water demands to the required place and quantity. These structures, though physically seem small pieces of engineering work, the consideration for structural analysis makes their design complex. Primary data included field observations and measurements, while secondary data included design documentation. In the design, the summation of vertical forces (shear resistance) was more than the summation of horizontal forces (Fh) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against sliding was determined to be 5.9 and 4.3 respectively which is greater than the optional value (i.e.1). In the design, the resisting moment (Mr) is greater than that of the destabilizing moment (Md) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against overturning was determined to be 2.5 and 2.1 respectively which is greater than the optional value (i.e.2); this indicates that the weir was safe against overturning. Basaka diversion weir was checked for stability against overstressing for dynamic and static conditions on the site at the time of the study is 0.34 and 0.29 respectively; the result indicates that the structure was safe against tension for the selected condition which is greater than the optional value (i.e. B/6) at designed bottom width. Performance evaluation revealed that the designed weir cross-section of Basaka was accommodating peak flood. In general, the constructed weir has no more engineering design problems that cause low performance but with a lack of well scheme administration, the major problems occurred as field observation results indicate.

VL  - 12
IS  - 1
ER  -

Copy | Download

Author Information

Gemechu Mosisa

Department of Hydraulic and Water Resource Engineering, College of Engineering and Technology, Wallaga University, Nekemte, Ethiopia

Contact Email

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Mosisa, G. (2024). Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. American Journal of Civil Engineering, 12(1), 27-31. https://doi.org/10.11648/j.ajce.20241201.14

Copy | Download

ACS Style

Mosisa, G. Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. Am. J. Civ. Eng. 2024, 12(1), 27-31. doi: 10.11648/j.ajce.20241201.14

Copy | Download

AMA Style

Mosisa G. Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia. Am J Civ Eng. 2024;12(1):27-31. doi: 10.11648/j.ajce.20241201.14

Copy | Download

@article{10.11648/j.ajce.20241201.14,
  author = {Gemechu Mosisa},
  title = {Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia},
  journal = {American Journal of Civil Engineering},
  volume = {12},
  number = {1},
  pages = {27-31},
  doi = {10.11648/j.ajce.20241201.14},
  url = {https://doi.org/10.11648/j.ajce.20241201.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajce.20241201.14},
  abstract = {Diversion weir structures are constructed to withdraw a portion of the stream flow to meet the different water demands to the required place and quantity. These structures, though physically seem small pieces of engineering work, the consideration for structural analysis makes their design complex. Primary data included field observations and measurements, while secondary data included design documentation. In the design, the summation of vertical forces (shear resistance) was more than the summation of horizontal forces (Fh) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against sliding was determined to be 5.9 and 4.3 respectively which is greater than the optional value (i.e.1). In the design, the resisting moment (Mr) is greater than that of the destabilizing moment (Md) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against overturning was determined to be 2.5 and 2.1 respectively which is greater than the optional value (i.e.2); this indicates that the weir was safe against overturning. Basaka diversion weir was checked for stability against overstressing for dynamic and static conditions on the site at the time of the study is 0.34 and 0.29 respectively; the result indicates that the structure was safe against tension for the selected condition which is greater than the optional value (i.e. B/6) at designed bottom width. Performance evaluation revealed that the designed weir cross-section of Basaka was accommodating peak flood. In general, the constructed weir has no more engineering design problems that cause low performance but with a lack of well scheme administration, the major problems occurred as field observation results indicate.
},
 year = {2024}
}

Copy | Download

TY  - JOUR
T1  - Structural Performance Evaluation of Diversion Weir Structure: Case Study of Basaka Small Scale Irrigation Scheme, Oromia, Ethiopia
AU  - Gemechu Mosisa
Y1  - 2024/01/23
PY  - 2024
N1  - https://doi.org/10.11648/j.ajce.20241201.14
DO  - 10.11648/j.ajce.20241201.14
T2  - American Journal of Civil Engineering
JF  - American Journal of Civil Engineering
JO  - American Journal of Civil Engineering
SP  - 27
EP  - 31
PB  - Science Publishing Group
SN  - 2330-8737
UR  - https://doi.org/10.11648/j.ajce.20241201.14
AB  - Diversion weir structures are constructed to withdraw a portion of the stream flow to meet the different water demands to the required place and quantity. These structures, though physically seem small pieces of engineering work, the consideration for structural analysis makes their design complex. Primary data included field observations and measurements, while secondary data included design documentation. In the design, the summation of vertical forces (shear resistance) was more than the summation of horizontal forces (Fh) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against sliding was determined to be 5.9 and 4.3 respectively which is greater than the optional value (i.e.1). In the design, the resisting moment (Mr) is greater than that of the destabilizing moment (Md) in the dynamic and static case in the Basaka diversion weir. For this reason, the factor of safety against overturning was determined to be 2.5 and 2.1 respectively which is greater than the optional value (i.e.2); this indicates that the weir was safe against overturning. Basaka diversion weir was checked for stability against overstressing for dynamic and static conditions on the site at the time of the study is 0.34 and 0.29 respectively; the result indicates that the structure was safe against tension for the selected condition which is greater than the optional value (i.e. B/6) at designed bottom width. Performance evaluation revealed that the designed weir cross-section of Basaka was accommodating peak flood. In general, the constructed weir has no more engineering design problems that cause low performance but with a lack of well scheme administration, the major problems occurred as field observation results indicate.

VL  - 12
IS  - 1
ER  -

Copy | Download