Care and Diversion of Water - Revision history

Mpollei@gfnet.com at 15:55, 21 July 2023

2023-07-21T15:55:34Z

← Older revision		Revision as of 15:55, 21 July 2023
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	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption=Construction of a tunnel for the diversion of water at a construction site.		\|caption=Construction of a tunnel for the diversion of water at a construction site.
			(Image Source: [https://en.wikipedia.org/wiki/Haikou_Nandu_River_Water_Diversion_Project Wikipedia])
	}}		}}

Mpollei@gfnet.com at 22:00, 11 July 2023

2023-07-11T22:00:30Z

← Older revision		Revision as of 22:00, 11 July 2023
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	#[[Specifications]] requirements."<ref name="Small Dams"/>		#[[Specifications]] requirements."<ref name="Small Dams"/>
	</br>		</br>
	"The method, or scheme, of diverting floods during construction depends on the magnitude of the flood to be diverted; the physical characteristics of the site; the type of dam to be constructed; the nature of the appurtenant works, such as the spillway, [[penstocks]], or outlet works; and the probable sequence of construction operations. The objective is to select the optimum scheme considering practicability, cost, and the risks involved. The diversion works should be capable of being incorporated into the overall construction program with minimal impact and delay."<ref name="Small Dams"/>		"The method, or scheme, of diverting floods during construction depends on the magnitude of the flood to be diverted; the physical characteristics of the site; the type of dam to be constructed; the nature of the appurtenant works, such as the spillway, [[penstocks]], or [[Outlet Works\|outlet works]]; and the probable sequence of construction operations. The objective is to select the optimum scheme considering practicability, cost, and the risks involved. The diversion works should be capable of being incorporated into the overall construction program with minimal impact and delay."<ref name="Small Dams"/>

	If a cofferdam is proposed, its hazard potential to the downstream public should be evaluated. Design criteria should be imposed by the regulating agency commensurate with that risk. The regulating agency may consider the anticipated service life of the structure and other risk reduction measures when determining appropriate design criteria for the structure. The dam [[owner]]'s construction insurance policy may also specify design criteria for temporary conditions during construction.		If a cofferdam is proposed, its hazard potential to the downstream public should be evaluated. Design criteria should be imposed by the regulating agency commensurate with that risk. The regulating agency may consider the anticipated [[Service Life\|service life]] of the structure and other risk reduction measures when determining appropriate design criteria for the structure. The dam [[owner]]'s construction insurance policy may also specify design criteria for temporary conditions during construction.

	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR~~, 2013~~]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR~~, 1987~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR]]

	==Trainings==		==Trainings==

Grichards at 21:16, 17 March 2023

2023-03-17T21:16:29Z

← Older revision		Revision as of 21:16, 17 March 2023
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	#Size and frequency of diversion flood;		#Size and frequency of diversion flood;
	#Methods of diversion;		#Methods of diversion;
	#Specifications requirements."<ref name="Small Dams"/>		#[[Specifications]] requirements."<ref name="Small Dams"/>
	</br>		</br>
	"The method, or scheme, of diverting floods during construction depends on the magnitude of the flood to be diverted; the physical characteristics of the site; the type of dam to be		"The method, or scheme, of diverting floods during construction depends on the magnitude of the flood to be diverted; the physical characteristics of the site; the type of dam to be constructed; the nature of the appurtenant works, such as the spillway, [[penstocks]], or outlet works; and the probable sequence of construction operations. The objective is to select the optimum scheme considering practicability, cost, and the risks involved. The diversion works should be capable of being incorporated into the overall construction program with minimal impact and delay."<ref name="Small Dams"/>
	constructed; the nature of the appurtenant works, such as the spillway, [[penstocks]], or outlet works; and the probable sequence of construction operations. The objective is to select the optimum scheme considering practicability, cost, and the risks involved. The diversion works should be capable of being incorporated into the overall construction program with minimal impact and delay."<ref name="Small Dams"/>
			If a cofferdam is proposed, its hazard potential to the downstream public should be evaluated. Design criteria should be imposed by the regulating agency commensurate with that risk. The regulating agency may consider the anticipated service life of the structure and other risk reduction measures when determining appropriate design criteria for the structure. The dam [[owner]]'s construction insurance policy may also specify design criteria for temporary conditions during construction.

	==Best Practices Resources==		==Best Practices Resources==

Rmanwaring at 17:35, 6 December 2022

2022-12-06T17:35:15Z

← Older revision		Revision as of 17:35, 6 December 2022
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	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
			"The design for a dam that is to be constructed across a stream channel must consider diversion of the streamflow around or through the damsite during the [[construction]] period. The extent of the diversion problem varies with the size and flood potential of the stream; at some damsites diversion may be costly and time-consuming and may affect the scheduling of construction activities; whereas, at other sites it may not present any great difficulties. Nevertheless, a diversion problem exists to some extent at all sites except those located offstream, and the selection of the most appropriate scheme for diversion during construction is important to the economy of the dam."<ref name="Small Dams">[[Design of Small Dams \| Design of Small Dams, USBR, 1987]]</ref>

			"The diversion scheme selected ordinarily represents a compromise between the cost of the diversion facilities and the amount of risk involved. The proper diversion scheme will minimize the potential for serious flood damage to the work in progress at a minimum of expense. The following factors should be considered in a study to determine the best diversion scheme:
			#Streamflow characteristics;
			#Size and frequency of diversion flood;
			#Methods of diversion;
			#Specifications requirements."<ref name="Small Dams"/>
			</br>
			"The method, or scheme, of diverting floods during construction depends on the magnitude of the flood to be diverted; the physical characteristics of the site; the type of dam to be
			constructed; the nature of the appurtenant works, such as the spillway, [[penstocks]], or outlet works; and the probable sequence of construction operations. The objective is to select the optimum scheme considering practicability, cost, and the risks involved. The diversion works should be capable of being incorporated into the overall construction program with minimal impact and delay."<ref name="Small Dams"/>

	==Best Practices Resources==		==Best Practices Resources==

Rmanwaring at 17:18, 6 December 2022

2022-12-06T17:18:00Z

← Older revision		Revision as of 17:18, 6 December 2022
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	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
	"[[Construction]] of many conventional water projects such as dams, dikes, [[canals]], [[siphons]], and pumping plants requires some degree of excavation, which often extends below the local water table. The excavation can be an expensive [[operation]], depending on the required depth, subsurface materials, and [[groundwater]] conditions. Water Removal and Control (WR&C) systems are often employed along with other techniques such as unwatering methods and/or [[cutoff]] walls in controlling the water and seepage within and surrounding the excavations. WR&C systems can be constructed by a variety of methods, either singly or in combinations, to effectively remove and control groundwater to facilitate excavation and construction activities 'in the dry' and to maintain [[stability]] of excavated slopes. Effective WR&C systems are also important to construction scheduling and safety of the construction crews, downstream populations and infrastructures, and the safety of the embankment dam itself."<ref name="DS13-21">[[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]</ref>

	"Design of WR&C systems should rely as much on experience as on the theory and calculations. Each site is unique, and no two systems will be exactly alike. Additionally, there is no one correct design, although some designs may be more applicable than others to specific site conditions. A well-suited design may include multiple features employing different technologies and configurations to achieve the desired goals."<ref name="DS13-21"/>

	==Best Practices Resources==		==Best Practices Resources==

Rmanwaring at 17:17, 6 December 2022

2022-12-06T17:17:44Z

← Older revision		Revision as of 17:17, 6 December 2022
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	{{Picture		{{Picture
	<!-- Add image file name (ex.image.jpg) -->		<!-- Add image file name (ex.image.jpg) -->
	\|image=~~Sheetpile-dewatering~~.jpg		\|image=WaterDiversionTunnel.jpg
	<!--Add link if applicable -->		<!--Add link if applicable -->
	\|link=		\|link=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption=Construction of a ~~sheet pile wall in preparation~~ for ~~dewatering~~.		\|caption=Construction of a tunnel for the diversion of water at a construction site.
	}}		}}

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	==Best Practices Resources==		==Best Practices Resources==
	~~{{Document Icon}} [[Management of Water Control Systems (EM 1110-2-3600) \| Management of Water Control Systems (EM 1110-2-3600), USACE, 2017]]~~
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

Rmanwaring at 17:17, 6 December 2022

2022-12-06T17:17:03Z

← Older revision		Revision as of 17:17, 6 December 2022
Line 5:		Line 5:
	{{Picture		{{Picture
	<!-- Add image file name (ex.image.jpg) -->		<!-- Add image file name (ex.image.jpg) -->
	\|image=~~WaterDiversionTunnel~~.jpg		\|image=Sheetpile-dewatering.jpg
	<!--Add link if applicable -->		<!--Add link if applicable -->
	\|link=		\|link=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption=Construction of ~~tunnel~~ for ~~the diversion of water~~.		\|caption=Construction of a sheet pile wall in preparation for dewatering.
	}}		}}

	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
			"[[Construction]] of many conventional water projects such as dams, dikes, [[canals]], [[siphons]], and pumping plants requires some degree of excavation, which often extends below the local water table. The excavation can be an expensive [[operation]], depending on the required depth, subsurface materials, and [[groundwater]] conditions. Water Removal and Control (WR&C) systems are often employed along with other techniques such as unwatering methods and/or [[cutoff]] walls in controlling the water and seepage within and surrounding the excavations. WR&C systems can be constructed by a variety of methods, either singly or in combinations, to effectively remove and control groundwater to facilitate excavation and construction activities 'in the dry' and to maintain [[stability]] of excavated slopes. Effective WR&C systems are also important to construction scheduling and safety of the construction crews, downstream populations and infrastructures, and the safety of the embankment dam itself."<ref name="DS13-21">[[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]</ref>

			"Design of WR&C systems should rely as much on experience as on the theory and calculations. Each site is unique, and no two systems will be exactly alike. Additionally, there is no one correct design, although some designs may be more applicable than others to specific site conditions. A well-suited design may include multiple features employing different technologies and configurations to achieve the desired goals."<ref name="DS13-21"/>

	==Best Practices Resources==		==Best Practices Resources==
			{{Document Icon}} [[Management of Water Control Systems (EM 1110-2-3600) \| Management of Water Control Systems (EM 1110-2-3600), USACE, 2017]]
			{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

Rmanwaring at 17:16, 6 December 2022

2022-12-06T17:16:50Z

← Older revision		Revision as of 17:16, 6 December 2022
Line 5:		Line 5:
	{{Picture		{{Picture
	<!-- Add image file name (ex.image.jpg) -->		<!-- Add image file name (ex.image.jpg) -->
	\|image=~~Sheetpile-dewatering~~.jpg		\|image=WaterDiversionTunnel.jpg
	<!--Add link if applicable -->		<!--Add link if applicable -->
	\|link=		\|link=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption=Construction of ~~a sheet pile wall in preparation~~ for ~~dewatering~~.		\|caption=Construction of tunnel for the diversion of water.
	}}		}}

	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
	"[[Construction]] of many conventional water projects such as dams, dikes, [[canals]], [[siphons]], and pumping plants requires some degree of excavation, which often extends below the local water table. The excavation can be an expensive [[operation]], depending on the required depth, subsurface materials, and [[groundwater]] conditions. Water Removal and Control (WR&C) systems are often employed along with other techniques such as unwatering methods and/or [[cutoff]] walls in controlling the water and seepage within and surrounding the excavations. WR&C systems can be constructed by a variety of methods, either singly or in combinations, to effectively remove and control groundwater to facilitate excavation and construction activities 'in the dry' and to maintain [[stability]] of excavated slopes. Effective WR&C systems are also important to construction scheduling and safety of the construction crews, downstream populations and infrastructures, and the safety of the embankment dam itself."<ref name="DS13-21">[[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]</ref>

	"Design of WR&C systems should rely as much on experience as on the theory and calculations. Each site is unique, and no two systems will be exactly alike. Additionally, there is no one correct design, although some designs may be more applicable than others to specific site conditions. A well-suited design may include multiple features employing different technologies and configurations to achieve the desired goals."<ref name="DS13-21"/>

	==Best Practices Resources==		==Best Practices Resources==
	~~{{Document Icon}} [[Management of Water Control Systems (EM 1110-2-3600) \| Management of Water Control Systems (EM 1110-2-3600), USACE, 2017]]~~
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

Rmanwaring at 17:11, 6 December 2022

2022-12-06T17:11:33Z

← Older revision		Revision as of 17:11, 6 December 2022
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	==Best Practices Resources==		==Best Practices Resources==
			{{Document Icon}} [[Management of Water Control Systems (EM 1110-2-3600) \| Management of Water Control Systems (EM 1110-2-3600), USACE, 2017]]
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams ~~(Bureau of Reclamation)~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

	==Trainings==		==Trainings==

Rmanwaring at 17:06, 6 December 2022

2022-12-06T17:06:55Z

← Older revision		Revision as of 17:06, 6 December 2022
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	<!-- Delete any sections that are not necessary to your topic. Add pictures/sections as needed -->		<!-- Delete any sections that are not necessary to your topic. Add pictures/sections as needed -->
	__NOTOC__		__NOTOC__
	[[Category:Construction]]		[[Category: Construction]]
	----		----
			{{Picture
			<!-- Add image file name (ex.image.jpg) -->
			\|image=Sheetpile-dewatering.jpg
			<!--Add link if applicable -->
			\|link=
			<!-- Add picture caption -->
			\|caption=Construction of a sheet pile wall in preparation for dewatering.
			}}

	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
	~~Paragraph text~~		"[[Construction]] of many conventional water projects such as dams, dikes, [[canals]], [[siphons]], and pumping plants requires some degree of excavation, which often extends below the local water table. The excavation can be an expensive [[operation]], depending on the required depth, subsurface materials, and [[groundwater]] conditions. Water Removal and Control (WR&C) systems are often employed along with other techniques such as unwatering methods and/or [[cutoff]] walls in controlling the water and seepage within and surrounding the excavations. WR&C systems can be constructed by a variety of methods, either singly or in combinations, to effectively remove and control groundwater to facilitate excavation and construction activities 'in the dry' and to maintain [[stability]] of excavated slopes. Effective WR&C systems are also important to construction scheduling and safety of the construction crews, downstream populations and infrastructures, and the safety of the embankment dam itself."<ref name="DS13-21">[[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]</ref>

			"Design of WR&C systems should rely as much on experience as on the theory and calculations. Each site is unique, and no two systems will be exactly alike. Additionally, there is no one correct design, although some designs may be more applicable than others to specific site conditions. A well-suited design may include multiple features employing different technologies and configurations to achieve the desired goals."<ref name="DS13-21"/>

	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations)\|Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation)]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems) \| Design Standards No. 13: Embankment Dams (Ch. 21: Water Removal and Control: Dewatering and Unwatering Systems), USBR, 2014]]
	{{Document Icon}} [[Design of Small Dams\|Design of Small Dams (Bureau of Reclamation)]]		{{Document Icon}} [[Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) \| Design Standards No. 14: Appurtenant Structures for Dams (Ch. 2: Hydrologic Considerations) (Bureau of Reclamation), USBR, 2013]]
			{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (Bureau of Reclamation)]]

	==Trainings==		==Trainings==
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	{{Video Icon}} [[On-Demand Webinar: Managing Increased Dam Safety Risk During Reconstruction]]		{{Video Icon}} [[On-Demand Webinar: Managing Increased Dam Safety Risk During Reconstruction]]

	<!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will automatically populate. Learn more at https://www.mediawiki.org/wiki/Help:Cite. -->		<!-- In the location of an in text citation, simply enclose the citation as follows: <ref> citation </ref>. Citations will automatically populate. Learn more at https://www.mediawiki.org/wiki/Help:Cite.-->
	{{Citations}}		{{Citations}}

	<!-- Revision history information -->		<!-- Revision history information -->
	{{revhistinf}}		{{revhistinf}}