Test Pitting - Revision history

Mpollei@gfnet.com at 15:21, 18 July 2023

2023-07-18T15:21:27Z

← Older revision		Revision as of 15:21, 18 July 2023
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	<!-- Add picture caption -->		<!-- Add picture caption -->
	\|caption= Trench excavation		\|caption= Trench excavation
			(Image Source: [https://www.geograph.org.uk/photo/1514678 Bill Nicholls])
	}}		}}

Mpollei@gfnet.com at 22:46, 10 July 2023

2023-07-10T22:46:13Z

← Older revision		Revision as of 22:46, 10 July 2023
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing, NRCS~~, 2012~~]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing, NRCS]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR~~, 1987~~]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR]]

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Rmanwaring at 22:44, 19 December 2022

2022-12-19T22:44:57Z

← Older revision		Revision as of 22:44, 19 December 2022
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	==Best Practices Resources==		==Best Practices Resources==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing, NRCS, 2012]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams, USBR, 1987]]

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Grichards at 17:48, 14 December 2022

2022-12-14T17:48:29Z

← Older revision		Revision as of 17:48, 14 December 2022
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	*"'''Test pits -''' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths at which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />		*"'''Test pits -''' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths at which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />

	==[[Best Practices Resources]]==		==Best Practices Resources==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]

Grichards at 03:46, 14 December 2022

2022-12-14T03:46:22Z

← Older revision		Revision as of 03:46, 14 December 2022
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	"Test pits are an effective means to explore and sample earth foundations and [[construction]] materials and to facilitate inspection, sampling, and testing. The depth of a test pit is determined by investigation requirements but is usually limited to the depth of the water table. Dragline, backhoe, clamshell, caisson [[drilling]] or auger equipment, and bulldozer pits are usually more economical than digging pits by hand for comparatively shallow materials explorations. Explosives may be required to break up large boulders. At the surface, the excavated material should be placed in an orderly manner around the pit to indicate depth of pit from which the material came to facilitate accurate logging and sampling. The moisture condition should be determined and recorded before drying occurs by exposure to air."<ref name="EarthManualP1">[[Earth Manual Part 1 \| Earth Manual Part 1, USBR, 1998]]</ref>		"Test pits are an effective means to explore and sample earth foundations and [[construction]] materials and to facilitate inspection, sampling, and testing. The depth of a test pit is determined by investigation requirements but is usually limited to the depth of the water table. Dragline, backhoe, clamshell, caisson [[drilling]] or auger equipment, and bulldozer pits are usually more economical than digging pits by hand for comparatively shallow materials explorations. Explosives may be required to break up large boulders. At the surface, the excavated material should be placed in an orderly manner around the pit to indicate depth of pit from which the material came to facilitate accurate logging and sampling. The moisture condition should be determined and recorded before drying occurs by exposure to air."<ref name="EarthManualP1">[[Earth Manual Part 1 \| Earth Manual Part 1, USBR, 1998]]</ref>

	"Investigations in open, accessible explorations such as test pits, large diameter borings, trenches, and [[tunnels]] are inherently hazardous. Federal, State, and local regulations must be followed when planning and executing accessible investigations. Occupation Safety and Health Act (OSHA) regulations for excavation safety (29 CFR 1926.650-652) should be consulted prior to planning accessible explorations. Regulations require that competent personnel plan, design, and monitor excavations. Excavations greater than 5 ft in depth normally require sloping or shoring systems designed by professional engineers. Large diameter boring and deep trenches may be considered to be confined space and may require special ventilation, monitoring, and rescue safety equipment."<ref name="EarthManualP1" />		"Investigations in open, accessible explorations such as test pits, large diameter borings, trenches, and [[tunnels]] are inherently hazardous. Federal, State, and local regulations must be followed when planning and executing accessible investigations. Occupation Safety and Health Act (OSHA) regulations for excavation safety (29 CFR 1926.650-652) should be consulted prior to planning accessible explorations. Regulations require that competent personnel plan, design, and monitor excavations. Excavations greater than 5 feet in depth normally require sloping or shoring systems designed by professional engineers. Large diameter boring and deep trenches may be considered to be confined space and may require special ventilation, monitoring, and rescue safety equipment."<ref name="EarthManualP1" />

	"Where pits or trenches penetrate or pass through foundation materials, trenches are backfilled and compacted to the density of the original in-place material. It is recognized that certain limitations exist in the use of trenching and test-pit excavating equipment for compacting fill material. However, every practical effort should be made to reestablish the in-place densities of foundation materials."<ref name ="NEH_CH5" />		"Where pits or trenches penetrate or pass through foundation materials, trenches are backfilled and compacted to the density of the original in-place material. It is recognized that certain limitations exist in the use of trenching and test-pit excavating equipment for compacting fill material. However, every practical effort should be made to reestablish the in-place densities of foundation materials."<ref name ="NEH_CH5" />

	*"''Trenches -'' Trenches are long, narrow excavations. They are advantageous for studying earth materials on steep slopes and in exposed faces. Trenches made by power equipment, such as backhoes, power shovels, and bulldozers, may require hand trimming of the sides and bottom to reach relatively undisturbed material. The method is of particular value in delineating the rock surface beneath the principal spillway and in abutments and in exploring auxiliary spillway materials. Trenching may be the most feasible method of investigation in materials containing cobbles or boulders. Trenches may yield valuable information on potential rock excavation and core trench depth along the centerline of the structure, depending on its design."<ref name ="NEH_CH5" />		==Definitions==
			*"'''Trenches -''' Trenches are long, narrow excavations. They are advantageous for studying earth materials on steep slopes and in exposed faces. Trenches made by power equipment, such as backhoes, power shovels, and bulldozers, may require hand trimming of the sides and bottom to reach relatively undisturbed material. The method is of particular value in delineating the rock surface beneath the principal spillway and in abutments and in exploring auxiliary spillway materials. Trenching may be the most feasible method of investigation in materials containing cobbles or boulders. Trenches may yield valuable information on potential rock excavation and core trench depth along the centerline of the structure, depending on its design."<ref name ="NEH_CH5" />

	*"''Test pits -'' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths ~~are~~ which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />		*"'''Test pits -''' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths at which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />

	==[[Best Practices Resources]]==		==[[Best Practices Resources]]==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]
	~~{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]~~
	{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]		{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]
	~~{{Document Icon}} [[Test Quarries and Test Fills (EM 1110-2-2301) \| Test Quarries and Test Fills (EM 1110-2-2301) (USACE, 1994)]]~~

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Grichards at 05:23, 18 November 2022

2022-11-18T05:23:42Z

← Older revision		Revision as of 05:23, 18 November 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:Geotechnical Exploration]]
	----		----
	{{Picture		{{Picture

Rmanwaring at 21:16, 2 November 2022

2022-11-02T21:16:12Z

← Older revision		Revision as of 21:16, 2 November 2022
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	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]
	{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]		{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]
			{{Document Icon}} [[Design of Small Dams \| Design of Small Dams (USBR, 1987)]]
			{{Document Icon}} [[Test Quarries and Test Fills (EM 1110-2-2301) \| Test Quarries and Test Fills (EM 1110-2-2301) (USACE, 1994)]]

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	{{Citations}}		{{Citations}}

Rmanwaring at 21:03, 1 November 2022

2022-11-01T21:03:04Z

← Older revision		Revision as of 21:03, 1 November 2022
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	<!-- Introductory paragraph or topic page summary -->		<!-- Introductory paragraph or topic page summary -->
	"Trenching and test pitting are simple methods of shallow exploration of easily excavated rock or soil materials. Visual inspection of a wide section of strata is of great value in logging profiles and selecting samples. If bedrock is anticipated at a shallow depth, trenches, and test pits should be located on the centerline of the proposed structure and dug parallel with it. If bedrock is not at shallow depths, deep trenches, or test pits should be offset from the centerline to avoid damaging the foundation of the structure. Shallow trenches or test pits may be dug adjacent to the centerline for correlation purposes."<ref name ="NEH_CH5">[[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing, NRCS, 2012]]</ref>		"Trenching and test pitting are simple methods of shallow exploration of easily excavated rock or soil materials. Visual inspection of a wide section of strata is of great value in logging profiles and selecting samples. If bedrock is anticipated at a shallow depth, trenches, and test pits should be located on the centerline of the proposed structure and dug parallel with it. If bedrock is not at shallow depths, deep trenches, or test pits should be offset from the centerline to avoid damaging the foundation of the structure. Shallow trenches or test pits may be dug adjacent to the centerline for correlation purposes."<ref name ="NEH_CH5">[[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing, NRCS, 2012]]</ref>

			"Test pits are an effective means to explore and sample earth foundations and [[construction]] materials and to facilitate inspection, sampling, and testing. The depth of a test pit is determined by investigation requirements but is usually limited to the depth of the water table. Dragline, backhoe, clamshell, caisson [[drilling]] or auger equipment, and bulldozer pits are usually more economical than digging pits by hand for comparatively shallow materials explorations. Explosives may be required to break up large boulders. At the surface, the excavated material should be placed in an orderly manner around the pit to indicate depth of pit from which the material came to facilitate accurate logging and sampling. The moisture condition should be determined and recorded before drying occurs by exposure to air."<ref name="EarthManualP1">[[Earth Manual Part 1 \| Earth Manual Part 1, USBR, 1998]]</ref>

			"Investigations in open, accessible explorations such as test pits, large diameter borings, trenches, and [[tunnels]] are inherently hazardous. Federal, State, and local regulations must be followed when planning and executing accessible investigations. Occupation Safety and Health Act (OSHA) regulations for excavation safety (29 CFR 1926.650-652) should be consulted prior to planning accessible explorations. Regulations require that competent personnel plan, design, and monitor excavations. Excavations greater than 5 ft in depth normally require sloping or shoring systems designed by professional engineers. Large diameter boring and deep trenches may be considered to be confined space and may require special ventilation, monitoring, and rescue safety equipment."<ref name="EarthManualP1" />

	"Where pits or trenches penetrate or pass through foundation materials, trenches are backfilled and compacted to the density of the original in-place material. It is recognized that certain limitations exist in the use of trenching and test-pit excavating equipment for compacting fill material. However, every practical effort should be made to reestablish the in-place densities of foundation materials."<ref name ="NEH_CH5" />		"Where pits or trenches penetrate or pass through foundation materials, trenches are backfilled and compacted to the density of the original in-place material. It is recognized that certain limitations exist in the use of trenching and test-pit excavating equipment for compacting fill material. However, every practical effort should be made to reestablish the in-place densities of foundation materials."<ref name ="NEH_CH5" />
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	==[[Best Practices Resources]]==		==[[Best Practices Resources]]==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]
			{{Document Icon}} [[Earth Manual Part 1 \| Earth Manual Part 1 (USBR, 1998)]]

	<!-- 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. -->

Rmanwaring at 22:46, 21 October 2022

2022-10-21T22:46:38Z

← Older revision		Revision as of 22:46, 21 October 2022
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	*"''Test pits -'' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths are which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />		*"''Test pits -'' Test pits are large enough to accommodate a person with sampling equipment. They may be excavated by hand or by power equipment such as a clam-shell or orange-pool bucket. Power equipment should be used only for rough excavation and with extreme caution when approaching the depths are which undisturbed samples are to be taken. Cribbing is required in trenches and pits of depths of 5 feet or greater."<ref name ="NEH_CH5" />

	==~~Examples~~==		==[[Best Practices Resources]]==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]

Rmanwaring at 22:46, 21 October 2022

2022-10-21T22:46:08Z

← Older revision		Revision as of 22:46, 21 October 2022
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	==Examples==		==Examples==
	{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]		{{Document Icon}} [[National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing \| National Engineering Handbook: Chapter 5 - Engineering Geology Logging, Sampling, and Testing (NRCS, 2012)]]

	~~==[[Best Practices Resources]]==~~

	~~==[[Trainings]]==~~

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