�ݺ�ߣshows by User: RobertPyke4

�ݺ�ߣshows by User: RobertPyke4 / http://www.slideshare.net/images/logo.gif �ݺ�ߣshows by User: RobertPyke4 / Fri, 21 Feb 2025 19:49:27 GMT �ݺ�ߣShare feed for �ݺ�ߣshows by User: RobertPyke4 An Updated Two-Pager on the Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences /slideshow/an-updated-two-pager-on-the-limitations-of-simplified-methods-for-evaluating-earthquake-induced-liquefaction-and-its-consequences/275902605 anupdatedtwo-pager-250221194927-02b2e5ca
I recently posted “Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences” on LinkedIn and elsewhere. The latest update added more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative. However, while you should carefully read the twenty-page version, I believe that a two-page summary might also be helpful.]]>
I recently posted “Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences” on LinkedIn and elsewhere. The latest update added more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative. However, while you should carefully read the twenty-page version, I believe that a two-page summary might also be helpful.]]> Fri, 21 Feb 2025 19:49:27 GMT /slideshow/an-updated-two-pager-on-the-limitations-of-simplified-methods-for-evaluating-earthquake-induced-liquefaction-and-its-consequences/275902605 RobertPyke4@slideshare.net(RobertPyke4) An Updated Two-Pager on the Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences RobertPyke4 I recently posted “Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences” on LinkedIn and elsewhere. The latest update added more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative. However, while you should carefully read the twenty-page version, I believe that a two-page summary might also be helpful. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/anupdatedtwo-pager-250221194927-02b2e5ca-thumbnail.jpg?width=120&height=120&fit=bounds" /> I recently posted “Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences” on LinkedIn and elsewhere. The latest update added more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative. However, while you should carefully read the twenty-page version, I believe that a two-page summary might also be helpful.

An Updated Two-Pager on the Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences from Robert Pyke

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0 Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf /slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf-5404/275902466 yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250221194327-2ff9d03e
This copy of my article on Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences simply has an additional conclusion, which says: The simplified methods for evaluating liquefaction, settlement and lateral spreading are particularly inappropriate in the context of risk-informed decision making, which is increasingly being adopted worldwide. It makes no sense to conduct quantitative risk analyses using analytical methods that are both not very accurate and have a built-in conservative bias.]]>
This copy of my article on Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences simply has an additional conclusion, which says: The simplified methods for evaluating liquefaction, settlement and lateral spreading are particularly inappropriate in the context of risk-informed decision making, which is increasingly being adopted worldwide. It makes no sense to conduct quantitative risk analyses using analytical methods that are both not very accurate and have a built-in conservative bias.]]> Fri, 21 Feb 2025 19:43:27 GMT /slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf-5404/275902466 RobertPyke4@slideshare.net(RobertPyke4) Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf RobertPyke4 This copy of my article on Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences simply has an additional conclusion, which says: The simplified methods for evaluating liquefaction, settlement and lateral spreading are particularly inappropriate in the context of risk-informed decision making, which is increasingly being adopted worldwide. It makes no sense to conduct quantitative risk analyses using analytical methods that are both not very accurate and have a built-in conservative bias. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250221194327-2ff9d03e-thumbnail.jpg?width=120&height=120&fit=bounds" /> This copy of my article on Yet Another Update of Limitations of Simplified Methods for Evaluating Earthquake-Induced Liquefaction and its Consequences simply has an additional conclusion, which says: The simplified methods for evaluating liquefaction, settlement and lateral spreading are particularly inappropriate in the context of risk-informed decision making, which is increasingly being adopted worldwide. It makes no sense to conduct quantitative risk analyses using analytical methods that are both not very accurate and have a built-in conservative bias.

Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf from Robert Pyke

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0 Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf /slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf/275084120 yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250123174203-a7c8c669
This latest update adds more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative.]]>
This latest update adds more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative.]]> Thu, 23 Jan 2025 17:42:03 GMT /slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf/275084120 RobertPyke4@slideshare.net(RobertPyke4) Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf RobertPyke4 This latest update adds more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250123174203-a7c8c669-thumbnail.jpg?width=120&height=120&fit=bounds" /> This latest update adds more detail about the limitations of simplified methods for predicting the magnitude of lateral spreading displacements and emphasizes the fact that if the initial evaluation for triggering of liquefaction is conservative, then the predicted settlements and the predicted lateral spreading displacements will also be conservative.

Yet Another Update of Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf from Robert Pyke

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0 Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 5.pdf /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-5-pdf/271997581 furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc5-240924181140-5b93cbda
This version has just a little edit to the previous version. It adds a paragraph showing the numerical results for a couple of case histories so that you do not have to read the original papers.]]>
This version has just a little edit to the previous version. It adds a paragraph showing the numerical results for a couple of case histories so that you do not have to read the original papers.]]> Tue, 24 Sep 2024 18:11:40 GMT /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-5-pdf/271997581 RobertPyke4@slideshare.net(RobertPyke4) Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 5.pdf RobertPyke4 This version has just a little edit to the previous version. It adds a paragraph showing the numerical results for a couple of case histories so that you do not have to read the original papers. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc5-240924181140-5b93cbda-thumbnail.jpg?width=120&height=120&fit=bounds" /> This version has just a little edit to the previous version. It adds a paragraph showing the numerical results for a couple of case histories so that you do not have to read the original papers.

Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 5.pdf from Robert Pyke

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0 Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 4.pdf /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-4-pdf/271780819 furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc4-240913162648-000e89b8
This is a further edited version of the further update that I posted yesterday! The further update expands on previous versions of this article by adding more details of the particular limitations of simplified methods for estimating earthquake-induced settlements. It also adds a brief commentary on the four general methods for conducting geotechnical analyses. ]]>
This is a further edited version of the further update that I posted yesterday! The further update expands on previous versions of this article by adding more details of the particular limitations of simplified methods for estimating earthquake-induced settlements. It also adds a brief commentary on the four general methods for conducting geotechnical analyses. ]]> Fri, 13 Sep 2024 16:26:48 GMT /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-4-pdf/271780819 RobertPyke4@slideshare.net(RobertPyke4) Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 4.pdf RobertPyke4 This is a further edited version of the further update that I posted yesterday! The further update expands on previous versions of this article by adding more details of the particular limitations of simplified methods for estimating earthquake-induced settlements. It also adds a brief commentary on the four general methods for conducting geotechnical analyses. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc4-240913162648-000e89b8-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is a further edited version of the further update that I posted yesterday! The further update expands on previous versions of this article by adding more details of the particular limitations of simplified methods for estimating earthquake-induced settlements. It also adds a brief commentary on the four general methods for conducting geotechnical analyses.

Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 4.pdf from Robert Pyke

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0 Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 3.pdf /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-3-pdf/271759695 furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc3-240912161221-76bb51b0
This is a further update of my article on the limitation of simplified methods for evaluating earthquake-induced liquefaction and its consequences. It expands on the particular limitations of methods for estimating settlements of both non-saturated and saturated sands and further emphasizes the importance of the method of deposition and the resulting soil fabric. ]]>
This is a further update of my article on the limitation of simplified methods for evaluating earthquake-induced liquefaction and its consequences. It expands on the particular limitations of methods for estimating settlements of both non-saturated and saturated sands and further emphasizes the importance of the method of deposition and the resulting soil fabric. ]]> Thu, 12 Sep 2024 16:12:21 GMT /slideshow/further-updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-3-pdf/271759695 RobertPyke4@slideshare.net(RobertPyke4) Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 3.pdf RobertPyke4 This is a further update of my article on the limitation of simplified methods for evaluating earthquake-induced liquefaction and its consequences. It expands on the particular limitations of methods for estimating settlements of both non-saturated and saturated sands and further emphasizes the importance of the method of deposition and the resulting soil fabric. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/furtherupdatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc3-240912161221-76bb51b0-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is a further update of my article on the limitation of simplified methods for evaluating earthquake-induced liquefaction and its consequences. It expands on the particular limitations of methods for estimating settlements of both non-saturated and saturated sands and further emphasizes the importance of the method of deposition and the resulting soil fabric.

Further Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc 3.pdf from Robert Pyke

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0 Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 9.pdf /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-_-9-pdf/270303382 updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc9-240717212534-82580535
Updated technical note]]>
Updated technical note]]> Wed, 17 Jul 2024 21:25:33 GMT /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-_-9-pdf/270303382 RobertPyke4@slideshare.net(RobertPyke4) Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 9.pdf RobertPyke4 Updated technical note <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc9-240717212534-82580535-thumbnail.jpg?width=120&height=120&fit=bounds" /> Updated technical note

Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 9.pdf from Robert Pyke

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0 Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 8.pdf /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-_-8-pdf/270301015 updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc8-240717172148-0e5f425d
Updated technical note]]>
Updated technical note]]> Wed, 17 Jul 2024 17:21:48 GMT /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-_-8-pdf/270301015 RobertPyke4@slideshare.net(RobertPyke4) Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 8.pdf RobertPyke4 Updated technical note <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc8-240717172148-0e5f425d-thumbnail.jpg?width=120&height=120&fit=bounds" /> Updated technical note

Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc _ 8.pdf from Robert Pyke

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0 Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf/269890289 updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-240626023022-0cfa8315
A technical note regarding the limitations of simplified methods for assessing the likelihood of earthquake induced liquefaction and its consequences]]>
A technical note regarding the limitations of simplified methods for assessing the likelihood of earthquake induced liquefaction and its consequences]]> Wed, 26 Jun 2024 02:30:22 GMT /slideshow/updated-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf/269890289 RobertPyke4@slideshare.net(RobertPyke4) Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf RobertPyke4 A technical note regarding the limitations of simplified methods for assessing the likelihood of earthquake induced liquefaction and its consequences <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/updatedlimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-240626023022-0cfa8315-thumbnail.jpg?width=120&height=120&fit=bounds" /> A technical note regarding the limitations of simplified methods for assessing the likelihood of earthquake induced liquefaction and its consequences

Updated Limitations of Simplified Methods for Evaluating the Potential for Liquefaction etc.pdf from Robert Pyke

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0 Pyke paper for asce lifelines conference 2021 22 /slideshow/pyke-paper-for-asce-lifelines-conference-2021-22/239153375 pykepaperforascelifelinesconference2021-22-201108232124
This is the final draft of a paper submitted to the ASCE Lifelines Conference 2021 (to be held at UCLA in 2022), which in part commemorates the 50th anniversary of the 1971 San Fernando earthquake. It summarizes observations of earthquake-induced settlements at the Joseph Jensen Filtration Plant and how these observations prompted more detailed studies of the mechanism of such settlements.]]>
This is the final draft of a paper submitted to the ASCE Lifelines Conference 2021 (to be held at UCLA in 2022), which in part commemorates the 50th anniversary of the 1971 San Fernando earthquake. It summarizes observations of earthquake-induced settlements at the Joseph Jensen Filtration Plant and how these observations prompted more detailed studies of the mechanism of such settlements.]]> Sun, 08 Nov 2020 23:21:24 GMT /slideshow/pyke-paper-for-asce-lifelines-conference-2021-22/239153375 RobertPyke4@slideshare.net(RobertPyke4) Pyke paper for asce lifelines conference 2021 22 RobertPyke4 This is the final draft of a paper submitted to the ASCE Lifelines Conference 2021 (to be held at UCLA in 2022), which in part commemorates the 50th anniversary of the 1971 San Fernando earthquake. It summarizes observations of earthquake-induced settlements at the Joseph Jensen Filtration Plant and how these observations prompted more detailed studies of the mechanism of such settlements. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/pykepaperforascelifelinesconference2021-22-201108232124-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is the final draft of a paper submitted to the ASCE Lifelines Conference 2021 (to be held at UCLA in 2022), which in part commemorates the 50th anniversary of the 1971 San Fernando earthquake. It summarizes observations of earthquake-induced settlements at the Joseph Jensen Filtration Plant and how these observations prompted more detailed studies of the mechanism of such settlements.

Pyke paper for asce lifelines conference 2021 22 from Robert Pyke

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0 Limitations of simplified methods for estimating seismic settlements 12d /RobertPyke4/limitations-of-simplified-methods-for-estimating-seismic-settlements-12d limitationsofsimplifiedmethodsforestimatingseismicsettlements12d-201020174804
Updated and expanded version of my technical note on estimating earthquake-induced settlements due to compaction. Notes limitations of existing simplified methods and suggest an improved screening methodology as well as a much improved method of analysis.]]>
Updated and expanded version of my technical note on estimating earthquake-induced settlements due to compaction. Notes limitations of existing simplified methods and suggest an improved screening methodology as well as a much improved method of analysis.]]> Tue, 20 Oct 2020 17:48:04 GMT /RobertPyke4/limitations-of-simplified-methods-for-estimating-seismic-settlements-12d RobertPyke4@slideshare.net(RobertPyke4) Limitations of simplified methods for estimating seismic settlements 12d RobertPyke4 Updated and expanded version of my technical note on estimating earthquake-induced settlements due to compaction. Notes limitations of existing simplified methods and suggest an improved screening methodology as well as a much improved method of analysis. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/limitationsofsimplifiedmethodsforestimatingseismicsettlements12d-201020174804-thumbnail.jpg?width=120&height=120&fit=bounds" /> Updated and expanded version of my technical note on estimating earthquake-induced settlements due to compaction. Notes limitations of existing simplified methods and suggest an improved screening methodology as well as a much improved method of analysis.

Limitations of simplified methods for estimating seismic settlements 12d from Robert Pyke

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0 Limitations of vs30 etc. /slideshow/limitations-of-vs30-etc-230411565/230411565 limitationsofvs30etc-200317185802
This is an updated version of the presentation that corrects a couple of small errors and adds some brief comments on basin effects and nonergodic seismic hazard analyses]]>
This is an updated version of the presentation that corrects a couple of small errors and adds some brief comments on basin effects and nonergodic seismic hazard analyses]]> Tue, 17 Mar 2020 18:58:02 GMT /slideshow/limitations-of-vs30-etc-230411565/230411565 RobertPyke4@slideshare.net(RobertPyke4) Limitations of vs30 etc. RobertPyke4 This is an updated version of the presentation that corrects a couple of small errors and adds some brief comments on basin effects and nonergodic seismic hazard analyses <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/limitationsofvs30etc-200317185802-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is an updated version of the presentation that corrects a couple of small errors and adds some brief comments on basin effects and nonergodic seismic hazard analyses

Limitations of vs30 etc. from Robert Pyke

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0 Limitations of vs30 etc. /slideshow/limitations-of-vs30-etc/230156432 limitationsofvs30etc-200312171115
This presentation examines the suitability of using Vs30 as the basis for seismic site classification and concludes that it is about as good as we can do. However, there will be wide variation in the site responses within any one site class and it is suggested that nonlinear effective stress site responses should be conducted more routinely. Some guidance is provided on the conduct of such analyses.]]>
This presentation examines the suitability of using Vs30 as the basis for seismic site classification and concludes that it is about as good as we can do. However, there will be wide variation in the site responses within any one site class and it is suggested that nonlinear effective stress site responses should be conducted more routinely. Some guidance is provided on the conduct of such analyses.]]> Thu, 12 Mar 2020 17:11:15 GMT /slideshow/limitations-of-vs30-etc/230156432 RobertPyke4@slideshare.net(RobertPyke4) Limitations of vs30 etc. RobertPyke4 This presentation examines the suitability of using Vs30 as the basis for seismic site classification and concludes that it is about as good as we can do. However, there will be wide variation in the site responses within any one site class and it is suggested that nonlinear effective stress site responses should be conducted more routinely. Some guidance is provided on the conduct of such analyses. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/limitationsofvs30etc-200312171115-thumbnail.jpg?width=120&height=120&fit=bounds" /> This presentation examines the suitability of using Vs30 as the basis for seismic site classification and concludes that it is about as good as we can do. However, there will be wide variation in the site responses within any one site class and it is suggested that nonlinear effective stress site responses should be conducted more routinely. Some guidance is provided on the conduct of such analyses.

Limitations of vs30 etc. from Robert Pyke

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0 Improved analyses of liquefaction and settlement /slideshow/improved-analyses-of-liquefaction-and-settlement-229953022/229953022 improvedanalysesofliquefactionandsettlement-200309191657
This is a further updated version of my presentation on the subject topic. It includes additional material on seismic settlements. The calculation of seismic settlements using simplified methods has been out of control for some time and is leading to expensive ground improvement when it is not necessary. An improved method of evaluation is described and illustrated by case histories.]]>
This is a further updated version of my presentation on the subject topic. It includes additional material on seismic settlements. The calculation of seismic settlements using simplified methods has been out of control for some time and is leading to expensive ground improvement when it is not necessary. An improved method of evaluation is described and illustrated by case histories.]]> Mon, 09 Mar 2020 19:16:57 GMT /slideshow/improved-analyses-of-liquefaction-and-settlement-229953022/229953022 RobertPyke4@slideshare.net(RobertPyke4) Improved analyses of liquefaction and settlement RobertPyke4 This is a further updated version of my presentation on the subject topic. It includes additional material on seismic settlements. The calculation of seismic settlements using simplified methods has been out of control for some time and is leading to expensive ground improvement when it is not necessary. An improved method of evaluation is described and illustrated by case histories. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/improvedanalysesofliquefactionandsettlement-200309191657-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is a further updated version of my presentation on the subject topic. It includes additional material on seismic settlements. The calculation of seismic settlements using simplified methods has been out of control for some time and is leading to expensive ground improvement when it is not necessary. An improved method of evaluation is described and illustrated by case histories.

Improved analyses of liquefaction and settlement from Robert Pyke

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0 Limitations of simplified methods for estimating seismic settlements linked in version /slideshow/limitations-of-simplified-methods-for-estimating-seismic-settlements-linked-in-version/229753911 limitationsofsimplifiedmethodsforestimatingseismicsettlementslinkedinversion-200305192248
This is a technical note that spells out the limitations of simplified methods for estimating seismic settlements of non-cohesive soils and references a much improved method that should be used in any situation where seismic settlements may be significant. ]]>
This is a technical note that spells out the limitations of simplified methods for estimating seismic settlements of non-cohesive soils and references a much improved method that should be used in any situation where seismic settlements may be significant. ]]> Thu, 05 Mar 2020 19:22:48 GMT /slideshow/limitations-of-simplified-methods-for-estimating-seismic-settlements-linked-in-version/229753911 RobertPyke4@slideshare.net(RobertPyke4) Limitations of simplified methods for estimating seismic settlements linked in version RobertPyke4 This is a technical note that spells out the limitations of simplified methods for estimating seismic settlements of non-cohesive soils and references a much improved method that should be used in any situation where seismic settlements may be significant. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/limitationsofsimplifiedmethodsforestimatingseismicsettlementslinkedinversion-200305192248-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is a technical note that spells out the limitations of simplified methods for estimating seismic settlements of non-cohesive soils and references a much improved method that should be used in any situation where seismic settlements may be significant.

Limitations of simplified methods for estimating seismic settlements linked in version from Robert Pyke

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0 Improved analyses of liquefaction and settlement /slideshow/improved-analyses-of-liquefaction-and-settlement-225934186/225934186 improvedanalysesofliquefactionandsettlement-200129200740
Based on three papers presented at the 7ICEGE held in Rome in June 2019, this paper outlines the limitations of simplified methods for evaluation liquefaction and settlement and shows how improved analyses can be conducted using nonlinear effective stress site response analyses.]]>
Based on three papers presented at the 7ICEGE held in Rome in June 2019, this paper outlines the limitations of simplified methods for evaluation liquefaction and settlement and shows how improved analyses can be conducted using nonlinear effective stress site response analyses.]]> Wed, 29 Jan 2020 20:07:40 GMT /slideshow/improved-analyses-of-liquefaction-and-settlement-225934186/225934186 RobertPyke4@slideshare.net(RobertPyke4) Improved analyses of liquefaction and settlement RobertPyke4 Based on three papers presented at the 7ICEGE held in Rome in June 2019, this paper outlines the limitations of simplified methods for evaluation liquefaction and settlement and shows how improved analyses can be conducted using nonlinear effective stress site response analyses. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/improvedanalysesofliquefactionandsettlement-200129200740-thumbnail.jpg?width=120&height=120&fit=bounds" /> Based on three papers presented at the 7ICEGE held in Rome in June 2019, this paper outlines the limitations of simplified methods for evaluation liquefaction and settlement and shows how improved analyses can be conducted using nonlinear effective stress site response analyses.

Improved analyses of liquefaction and settlement from Robert Pyke

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0 Improved analysis of potential lateral spreading displacements /slideshow/improved-analysis-of-potential-lateral-spreading-displacements-168718765/168718765 improvedanalysisofpotentiallateralspreadingdisplacements-190903151551
This is a further update of a presentation delivered at the 2nd Ishihara Colloquium held at San Diego State University on August 22-23, 2019.]]>
This is a further update of a presentation delivered at the 2nd Ishihara Colloquium held at San Diego State University on August 22-23, 2019.]]> Tue, 03 Sep 2019 15:15:51 GMT /slideshow/improved-analysis-of-potential-lateral-spreading-displacements-168718765/168718765 RobertPyke4@slideshare.net(RobertPyke4) Improved analysis of potential lateral spreading displacements RobertPyke4 This is a further update of a presentation delivered at the 2nd Ishihara Colloquium held at San Diego State University on August 22-23, 2019. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/improvedanalysisofpotentiallateralspreadingdisplacements-190903151551-thumbnail.jpg?width=120&height=120&fit=bounds" /> This is a further update of a presentation delivered at the 2nd Ishihara Colloquium held at San Diego State University on August 22-23, 2019.

Improved analysis of potential lateral spreading displacements from Robert Pyke

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0 Improved analyses of liquefaction and settlement /slideshow/improved-analyses-of-liquefaction-and-settlement/166353522 improvedanalysesofliquefactionandsettlement-190825221816
Updated presentation on improved analyses of earthquake-induced liquefaction and settlement using 1D nonlinear effective stress analyses]]>
Updated presentation on improved analyses of earthquake-induced liquefaction and settlement using 1D nonlinear effective stress analyses]]> Sun, 25 Aug 2019 22:18:16 GMT /slideshow/improved-analyses-of-liquefaction-and-settlement/166353522 RobertPyke4@slideshare.net(RobertPyke4) Improved analyses of liquefaction and settlement RobertPyke4 Updated presentation on improved analyses of earthquake-induced liquefaction and settlement using 1D nonlinear effective stress analyses <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/improvedanalysesofliquefactionandsettlement-190825221816-thumbnail.jpg?width=120&height=120&fit=bounds" /> Updated presentation on improved analyses of earthquake-induced liquefaction and settlement using 1D nonlinear effective stress analyses

Improved analyses of liquefaction and settlement from Robert Pyke

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0 Pyke static and cyclic liquefaction - annotated /slideshow/pyke-static-and-cyclic-liquefaction-annotated/155525456 pyke-staticandcyclicliquefaction-annotated-190715011121
A presentation delivered at CREA-MG in Belo Horizonte, Brazil, regarding the potential mechanisms of failure of tailings dams.]]>
A presentation delivered at CREA-MG in Belo Horizonte, Brazil, regarding the potential mechanisms of failure of tailings dams.]]> Mon, 15 Jul 2019 01:11:21 GMT /slideshow/pyke-static-and-cyclic-liquefaction-annotated/155525456 RobertPyke4@slideshare.net(RobertPyke4) Pyke static and cyclic liquefaction - annotated RobertPyke4 A presentation delivered at CREA-MG in Belo Horizonte, Brazil, regarding the potential mechanisms of failure of tailings dams. <img style="border:1px solid #C3E6D8;float:right;" alt="" src="https://cdn.slidesharecdn.com/ss_thumbnails/pyke-staticandcyclicliquefaction-annotated-190715011121-thumbnail.jpg?width=120&height=120&fit=bounds" /> A presentation delivered at CREA-MG in Belo Horizonte, Brazil, regarding the potential mechanisms of failure of tailings dams.

Pyke static and cyclic liquefaction - annotated from Robert Pyke

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0 https://public.slidesharecdn.com/v2/images/profile-picture.png https://cdn.slidesharecdn.com/ss_thumbnails/anupdatedtwo-pager-250221194927-02b2e5ca-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/an-updated-two-pager-on-the-limitations-of-simplified-methods-for-evaluating-earthquake-induced-liquefaction-and-its-consequences/275902605 An Updated Two-Pager o... https://cdn.slidesharecdn.com/ss_thumbnails/yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250221194327-2ff9d03e-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf-5404/275902466 Yet Another Update of ... https://cdn.slidesharecdn.com/ss_thumbnails/yetanotherupdateoflimitationsofsimplifiedmethodsforevaluatingthepotentialforliquefactionetc-250123174203-a7c8c669-thumbnail.jpg?width=320&height=320&fit=bounds slideshow/yet-another-update-of-limitations-of-simplified-methods-for-evaluating-the-potential-for-liquefaction-etc-pdf/275084120 Yet Another Update of ...