Foundation Evaluation: Difference between revisions
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[[Category:Geotechnical Geology]] | |||
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According to the Association of State Dam Safety Officials (ASDSO), the five most likely causes of dam failures are: overtopping, foundation defects, cracking, inadequate maintenance and upkeep, and piping.<ref name="ASDSO">[https://damsafety.org/dam-failures Dam Failures and Incidents, ASDSO, 2022]</ref> In order to prevent a dam failure, a properly designed foundation is essential. | |||
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dam | |||
“The earth embankment and its foundation must be stable and withstand all anticipated loads without movements leading to failure. Provide measures for adequate seepage control under all anticipated loads.” <ref name="Small Dams">[[Technical Release 210-60: Earth Dams and Reservoirs| Technical Release 210-60: Earth Dams and Reservoirs, NRCS, 2019]]</ref> | |||
"The purpose of conducting an investigation of foundation and earth materials is to obtain information about these materials for use in analysis, design, [[construction]], and performance monitoring of a structure. The detail of the investigation should be commensurate with the magnitude and type of structure involved, the study being undertaken, and the stage of the project. On all dam projects, the watertightness of the foundations, the suitability of the foundations for the dam and appurtenant structures, and the construction material sources are important geological and [[engineering]] considerations."<ref name="DS13-12">[[Design Standards No. 13: Embankment Dams (Ch. 12: Foundation and Earth Materials Investigation) | Design Standards No. 13: Embankment Dams (Ch. 12: Foundation and Earth Materials Investigation), USBR, 2012]]</ref> | |||
==Types of Foundations== | |||
* [[Soil Foundations]] | |||
* [[Rock Foundations]] | |||
== | ==Types of Foundation Evaluations== | ||
The situations below are common issues examined through foundation evaluation: | |||
* [[Underseepage]] | |||
* [[Settlement]] | |||
* [[Stability]] | |||
==Best Practices Resources== | ==Best Practices Resources== | ||
{{Document Icon}} [[Technical Release 210-60: Earth Dams and Reservoirs]] | {{Document Icon}} [[Technical Release 210-60: Earth Dams and Reservoirs | Technical Release 210-60: Earth Dams and Reservoirs, NRCS]] | ||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 15: Foundation Grouting) | Design Standards No. 13: Embankment Dams (Ch. 15: Foundation Grouting), USBR]] | |||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls) | Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls)]] | |||
{{Document Icon}} [[Design Standards No. 13: Embankment Dams (Ch. 12: Foundation and Earth Materials Investigation) | Design Standards No. 13: Embankment Dams (Ch. 12: Foundation and Earth Materials Investigation), USBR]] | |||
{{Document Icon}} [[Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 4- Embankment Dams | Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 4- Embankment Dams, FERC]] | |||
{{Document Icon}} [[Rock Foundations (EM 1110-1-2908) | Rock Foundations (EM 1110-1-2908), USACE]] | |||
==Trainings== | ==Trainings== | ||
{{ | {{Video Icon}} [[On-Demand Webinar: Evaluation and Maintenance of Piezometers, Relief Wells, and Drains in Dams and Levees]] | ||
{{Video Icon}} [[On-Demand Webinar: Advances in Geologic Data Collection and 3D Geologic Modeling for Site Characterization and Safety Studies for Dams and Levees]] | |||
{{Video Icon}} [[On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees]] | |||
{{Video Icon}} [[On-Demand Webinar: Foundation Preparation and Treatment for Dam Construction]] | |||
{{Video Icon}} [[On-Demand Webinar: Introduction to Grouting for Dams]] | |||
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Latest revision as of 14:57, 11 July 2023
According to the Association of State Dam Safety Officials (ASDSO), the five most likely causes of dam failures are: overtopping, foundation defects, cracking, inadequate maintenance and upkeep, and piping.[1] In order to prevent a dam failure, a properly designed foundation is essential.
“The earth embankment and its foundation must be stable and withstand all anticipated loads without movements leading to failure. Provide measures for adequate seepage control under all anticipated loads.” [2]
"The purpose of conducting an investigation of foundation and earth materials is to obtain information about these materials for use in analysis, design, construction, and performance monitoring of a structure. The detail of the investigation should be commensurate with the magnitude and type of structure involved, the study being undertaken, and the stage of the project. On all dam projects, the watertightness of the foundations, the suitability of the foundations for the dam and appurtenant structures, and the construction material sources are important geological and engineering considerations."[3]
Types of Foundations
Types of Foundation Evaluations
The situations below are common issues examined through foundation evaluation:
Best Practices Resources
Technical Release 210-60: Earth Dams and Reservoirs, NRCS
Design Standards No. 13: Embankment Dams (Ch. 15: Foundation Grouting), USBR
Design Standards No. 13: Embankment Dams (Ch. 16: Cutoff Walls)
Engineering Guidelines for the Evaluation of Hydropower Projects: Chapter 4- Embankment Dams, FERC
Rock Foundations (EM 1110-1-2908), USACE
Trainings
On-Demand Webinar: Foundation Cutoff Walls for Dams and Levees
On-Demand Webinar: Foundation Preparation and Treatment for Dam Construction
On-Demand Webinar: Introduction to Grouting for Dams
Citations:
Revision ID: 7083
Revision Date: 07/11/2023