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DTSTART:20250101T000000
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DTSTART;TZID=America/Phoenix:20261013T083000
DTEND;TZID=America/Phoenix:20261013T103000
DTSTAMP:20260407T234440
CREATED:20260106T215732Z
LAST-MODIFIED:20260106T220056Z
UID:10000064-1791880200-1791887400@ncsgeoresources.com
SUMMARY:Online Workshop: Spread Footings on Soil and Rock - Geotechnical Design Aspects
DESCRIPTION:Spread footings are often under-utilized in comparison to the costlier deep foundation systems. This workshop will include discussions about spread footings on soil and rock. The workshop will discuss the development of the bearing resistance chart that permits consideration of several limit states (settlement\, limiting eccentricity\, and bearing resistance) in one convenient format. Other limit states such as sliding will also be discussed. The presentation will be indexed to the latest (2020) version of the Bridge Design Specifications (BDS) based on the  Load and Resistance Factor Design (LRFD) platform of the American Association of State Highway and Transportation Officials which is a key component of Federal Highway Administration (FHWA) guidelines for spread footings. The 2020 version of AASHTO LRFD BDS includes new information on analysis of spread footings such as the construction-point concept and implementation of the SE load factor which accounts for the uncertainty in prediction of settlements. Information on Protection Index concept from AASHTO’s latest (2020) Guide Specification for Service life design will also be presented. \nUsing a collaborative and interactive learning approach\, this virtual workshop will help you understand: (a) the analysis for spread footings on soil and rock\, and (b) the latest AASHTO LRFD guidelines for spread footings including the construction-point concept and the SE load factor. The workshop will help you assimilate these crucial considerations through active participation by frequent interactions throughout the workshop and real-time expert feedback. The interactions will facilitate a better understanding of the nuances of the various design procedures which would help you avoid costly design errors in real-world projects. In between the two live sessions\, attendees will independently work on an application (e.g.\, exercises) and/or a reflection (e.g.\, reading) assignment. \nSESSION 1 \n\nIntroductions\nTerminology\, pressure distributions\, and limit states\nSliding stability\nLimiting eccentricity (overturning) stability\nBearing stability\nOverall (global) stability)\nSettlement\nBearing resistance and settlement chart\nReview of Day 1\nInteractive Question and Answer (Q&A) session\nAssignment of classwork\nAdjourn\n\nSESSION 2 \n\nReview of classwork assignments\nExample: Sizing a footing using a bearing resistance chart\nConstruction-point approach\nReliability of estimated settlements and the SE load factor\nDifferential settlement: Sf-0 and NPEC approaches\nDefinition of rock and rock mass\nExample: Sizing a footing on rock\nConsiderations for extreme events\nMaterial Deterioration: AASHTO Guide Specification\nClosure and references\nReview of Session 2 and full workshop\nInteractive Question and Answer (Q&A) session\nAdjourn\n\n 
URL:https://ncsgeoresources.com/event/online-workshop-spread-footings-on-soil-and-rock-geotechnical-design-aspects-day-2-of-2-3/
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BEGIN:VEVENT
DTSTART;TZID=America/Phoenix:20261214T093000
DTEND;TZID=America/Phoenix:20261214T140000
DTSTAMP:20260407T234440
CREATED:20260106T220457Z
LAST-MODIFIED:20260106T220539Z
UID:10000066-1797240600-1797256800@ncsgeoresources.com
SUMMARY:Online Workshop: Mechanically Stabilized Earth (MSE) Walls – Limit State Based Design Principles
DESCRIPTION:Mechanically Stabilized Earth (MSE) walls are used extensively for grade-separation fill structures in many applications\, e.g.\, highways\, railways\, marine\, commercial\, etc. To avoid adverse performance issues\, design processes for an MSE wall must be tailored to specific geometry and the environment (conditions) expected over its specified lifetime. This workshop is geared towards development of a better understanding of design procedures using principles of limit states to ensure safe and serviceable MSE wall structures over specified lifetimes. More specifically\, this workshop is based on the Load and Resistance Factor Design (LRFD) methodology that is a North American version of the broader Limit State Design (LSD) approach. The design principles will be explained using wall geometries with level and sloped backfill configurations. The topic of complex geometries will be introduced. The presentation ends with a brief introduction to the design philosophy for the new MSE-LASR technology that permits consideration of Local Available Sustainable Resources (LASR)\, i.e.\, non-select or marginal fills. \nUsing a collaborative and interactive learning approach\, this virtual workshop will help you understand the design principles for MSE walls. You will learn newer design approaches based on the LRFD platform that is the basis for documents for MSE walls by the American Association of State Highway and Transportation Officials (AASHTO) and the Federal Highway Administration (FHWA). The workshop will help you assimilate the design principles through active participation by frequent interactions throughout the workshop and real-time expert feedback. The interactions will facilitate a better understanding of the nuances of the newer design principles which would help you avoid costly design errors in real-world projects. In between the two live sessions\, attendees will independently work on an application (e.g.\, exercises) or a reflection (e.g.\, reading) assignment. \nSession 1 of 2 \n\nIntroductions\nTerminology and forces for MSE Walls\nLimit states and resistance factors\nApplicable loads and load factors\nConsideration of surcharges\nExternal stability (Strength and Service)\nInteractions within the MSE mass\nInteractive Question and Answer (Q&A) session\nAssignment of Classwork\nAdjourn for Classwork and Break\n\nSession 2 of 2 \n\nInternal stability (Strength)\nExtreme Event limit states (scour\, seismic\, and vehicle impact)\nIntroduction to complex MSE geometries\nIntroduction to the design philosophy for MSE-LASR technology\nReferences\nReview of  full workshop\nInteractive Question and Answer (Q&A) session\nAdjourn
URL:https://ncsgeoresources.com/event/online-workshop-mechanically-stabilized-earth-mse-walls-limit-state-based-design-principles-2/
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