Borrow Investigation - Revision history

Mpollei@gfnet.com at 20:07, 18 July 2023

2023-07-18T20:07:50Z

← Older revision		Revision as of 20:07, 18 July 2023
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	\|caption=		\|caption=
	<!-- Add picture caption -->		<!-- Add picture caption -->
	Excavation of a borrow pit. ([https://commons.wikimedia.org/wiki/File:Bohemia_Borrow_Pit_1973.jpg Wikipedia])		Excavation of a borrow pit.
			(Image Source: [https://commons.wikimedia.org/wiki/File:Bohemia_Borrow_Pit_1973.jpg Wikipedia])
	}}		}}
	Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.		Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.

Mpollei@gfnet.com at 15:38, 11 July 2023

2023-07-11T15:38:35Z

← Older revision		Revision as of 15:38, 11 July 2023
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials \| National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials, NRCS~~, 2012~~]]		{{Document Icon}} [[National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials \| National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials, NRCS]]
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) \| Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction), USBR~~, 2012~~]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) \| Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction), USBR]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR~~, 1987~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR]]

	</br>		</br>

Grichards at 17:38, 16 March 2023

2023-03-16T17:38:52Z

← Older revision		Revision as of 17:38, 16 March 2023
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	“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>		“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>

	A material distribution plan should also be developed which ~~should account~~ for waste, loss, shrink and logistics of placing the material in the dam with an adequate factor of safety on the volume of material available while also minimizing the amount of handling required. This can inform any contractual requirements that may need to be placed on the [[contractor]] in their development of the borrow to ensure that they can execute the project efficiently and effectively with the materials available.		A material distribution plan should also be developed which accounts for waste, loss, shrink and logistics of placing the material in the dam with an adequate factor of safety on the volume of material available while also minimizing the amount of handling required. This can inform any contractual requirements that may need to be placed on the [[contractor]] in their development of the borrow to ensure that they can execute the project efficiently and effectively with the materials available.

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

Grichards at 17:38, 16 March 2023

2023-03-16T17:38:33Z

← Older revision		Revision as of 17:38, 16 March 2023
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	Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.		Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.

	~~“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection~~ of ~~the damsite~~. ~~To avoid overlooking nearby areas~~, the ~~investigations should start at the damsite~~ and ~~extend outward in all directions~~. ~~Potential~~ borrow ~~areas near the dam~~ should ~~be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered~~ to ~~mitigate [[environmental]] concerns”~~.~~<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>~~		Modern earthen [[Embankment Dams\|embankment dams]] are designed using soils of varying hydraulic conductivities to construct discrete zones. These zones typically consist of a core having very low permeability, usually constructed using clays and silts, and a shell covering and protecting both upstream and downstream faces of the core consisting of sands and gravels with higher levels of permeability. The borrow investigation should aim to locate material suitable for such a multi-zoned earthen embankment dam.

	~~Modern earthen [[Embankment Dams\|embankment dams]] are designed using soils~~ of ~~varying hydraulic conductivities to construct discrete zones~~. ~~These zones typically consist of a core having very low permeability~~, ~~usually constructed using clays~~ and ~~silts, and a shell covering and protecting both upstream and downstream faces of~~ the ~~core consisting of sands and gravels with higher levels of permeability~~. ~~The~~ borrow ~~investigation~~ should ~~aim~~ to ~~locate material suitable for such a multi-zoned earthen embankment dam~~.		“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection of the dam site. To avoid overlooking nearby areas, the investigations should start at the dam site and extend outward in all directions. Potential borrow areas near the dam should be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered to mitigate [[environmental]] concerns”.<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>

	“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>		“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>

			A material distribution plan should also be developed which should account for waste, loss, shrink and logistics of placing the material in the dam with an adequate factor of safety on the volume of material available while also minimizing the amount of handling required. This can inform any contractual requirements that may need to be placed on the [[contractor]] in their development of the borrow to ensure that they can execute the project efficiently and effectively with the materials available.

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

Rmanwaring at 20:19, 20 December 2022

2022-12-20T20:19:50Z

← Older revision		Revision as of 20:19, 20 December 2022
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials \| National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials ~~(Natural Resources Conservation Service)~~]]		{{Document Icon}} [[National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials \| National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials, NRCS, 2012]]
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) \| Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) ~~(Bureau of Reclamation)~~]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) \| Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction), USBR, 2012]]
	{{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]]

	</br>		</br>

Grichards at 06:46, 14 December 2022

2022-12-14T06:46:03Z

← Older revision		Revision as of 06:46, 14 December 2022
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	Excavation of a borrow pit. ([https://commons.wikimedia.org/wiki/File:Bohemia_Borrow_Pit_1973.jpg Wikipedia])		Excavation of a borrow pit. ([https://commons.wikimedia.org/wiki/File:Bohemia_Borrow_Pit_1973.jpg Wikipedia])
	}}		}}

	Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.		Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.

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	</br>		</br>
	Citations:		{{Citations}}
	~~<[[references]] />~~

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

Grichards at 02:25, 18 November 2022

2022-11-18T02:25:59Z

← Older revision		Revision as of 02:25, 18 November 2022
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	__NOTOC__		__NOTOC__
			[[Category:Geotechnical Geology]]
	----		----
	{{Picture		{{Picture
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	“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection of the damsite. To avoid overlooking nearby areas, the investigations should start at the damsite and extend outward in all directions. Potential borrow areas near the dam should be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered to mitigate [[environmental]] concerns”.<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>		“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection of the damsite. To avoid overlooking nearby areas, the investigations should start at the damsite and extend outward in all directions. Potential borrow areas near the dam should be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered to mitigate [[environmental]] concerns”.<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>

	Modern earthen embankment dams are designed using soils of varying hydraulic conductivities to construct discrete zones. These zones typically consist of a core having very low permeability, usually constructed using clays and silts, and a shell covering and protecting both upstream and downstream faces of the core consisting of sands and gravels with higher levels of permeability. The borrow investigation should aim to locate material suitable for such a multi-zoned earthen embankment dam.		Modern earthen [[Embankment Dams\|embankment dams]] are designed using soils of varying hydraulic conductivities to construct discrete zones. These zones typically consist of a core having very low permeability, usually constructed using clays and silts, and a shell covering and protecting both upstream and downstream faces of the core consisting of sands and gravels with higher levels of permeability. The borrow investigation should aim to locate material suitable for such a multi-zoned earthen embankment dam.

	“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>		“Investigation for embankment materials is a progressive procedure, ranging from a cursory inspection during the appraisal stage to extensive studies of possible sources of material during final design. A reconnaissance for borrow materials should be made at each prospective damsite. Careful examination of existing maps, soil surveys, aerial photographs, and geologic reconnaissance reports usually indicates the areas to be examined in the field. Highway and railroad cuts, arroyos, and banks along stream channels should be examined because they can provide valuable clues to the nature of the materials underlying a borrow area”.<ref name="Small Dams"></ref>

Rmanwaring at 19:32, 21 October 2022

2022-10-21T19:32:42Z

← Older revision		Revision as of 19:32, 21 October 2022
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	}}		}}

	Earthen embankment dams are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native soils from locations that will not be inundated after filling of the reservoir.		Earthen [[Embankment Dams\|embankment dams]] are most cost effective if the material is extracted from the proposed reservoir location. Not only are transportation costs of the material minimized, but the material volume can then be added to the total eventual water storage of the reservoir once filled. Additionally, sourcing the borrow material from within the proposed reservoir reduces the impact of excavation and extraction of native [[soils]] from locations that will not be inundated after filling of the reservoir.

	“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection of the damsite. To avoid overlooking nearby areas, the investigations should start at the damsite and extend outward in all directions. Potential borrow areas near the dam should be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered to mitigate environmental concerns”.<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>		“A systematic plan for selecting borrow areas should be followed during the feasibility investigation stage after final selection of the damsite. To avoid overlooking nearby areas, the investigations should start at the damsite and extend outward in all directions. Potential borrow areas near the dam should be investigated before more distant sources. Where possible, borrow from the proposed reservoir should be considered to mitigate [[environmental]] concerns”.<ref name="Small Dams">[[Design of Small Dams\|Design of Small Dams, USBR, 1987]]</ref>

	Modern earthen embankment dams are designed using soils of varying hydraulic conductivities to construct discrete zones. These zones typically consist of a core having very low permeability, usually constructed using clays and silts, and a shell covering and protecting both upstream and downstream faces of the core consisting of sands and gravels with higher levels of permeability. The borrow investigation should aim to locate material suitable for such a multi-zoned earthen embankment dam.		Modern earthen embankment dams are designed using soils of varying hydraulic conductivities to construct discrete zones. These zones typically consist of a core having very low permeability, usually constructed using clays and silts, and a shell covering and protecting both upstream and downstream faces of the core consisting of sands and gravels with higher levels of permeability. The borrow investigation should aim to locate material suitable for such a multi-zoned earthen embankment dam.
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[~~Geology~~ National Engineering Handbook: Chapter 3- Engineering Classification of Earth Materials\|National Engineering Handbook: Chapter 3- Engineering Classification of Earth Materials (Natural Resources Conservation Service)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials \| National Engineering Handbook: Chapter 3 - Engineering Classification of Earth Materials (Natural Resources Conservation Service)]]
	{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction)\|Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) (Bureau of Reclamation)]]		{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) \| Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) (Bureau of Reclamation)]]
	{{Document Icon}} [[Design of Small Dams\|Design of Small Dams (Bureau of Reclamation)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (Bureau of Reclamation)]]

	</br>		</br>
	Citations:		Citations:
	<references />		<[[references]] />

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

Grichards at 07:25, 17 September 2022

2022-09-17T07:25:31Z

← Older revision		Revision as of 07:25, 17 September 2022
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[Design of Small Dams]]		{{Document Icon}} [[Geology National Engineering Handbook: Chapter 3- Engineering Classification of Earth Materials\|National Engineering Handbook: Chapter 3- Engineering Classification of Earth Materials (Natural Resources Conservation Service)]]
			{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction)\|Design Standards No. 13: Embankment Dams (Ch. 10: Embankment Construction) (Bureau of Reclamation)]]
			{{Document Icon}} [[Design of Small Dams\|Design of Small Dams (Bureau of Reclamation)]]

	</br>		</br>

Cort at 15:48, 16 September 2022

2022-09-16T15:48:13Z

← Older revision		Revision as of 15:48, 16 September 2022
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[Design of Small Dams]]		{{Document Icon}} [[Design of Small Dams]]

	~~==Trainings==~~
	~~{{Website Icon}}~~

	</br>		</br>