Downloads Blog Page

Ask questions or discuss about specific downloads..

Presentation at SW Geotech Conference – Phoenix 2017

Posted by on May 10, 2017 in Downloads, LRFD, News and Announcements, Top News | 0 comments

Since 2009 Naresh has been involved with the development of calibration procedures for AASHTO LRFD service limit state for foundation deformations. The work was performed as part of Project R19B of SHRP2. Subsequently, Naresh co-authored a manual for AASHTO and FHWA titled "Incorporation of Foundations Deformations in AASHTO LRFD Bridge Design Process." Naresh has been retained by AASHTO and FHWA through a contract with CH2M Hill to deliver presentations and training courses nationwide. As part of this contract, Naresh delivered a presentation on May 3, 2017, at the 42nd Annual Southwest Geotechnical Engineers Conferences in Phoenix, AZ. This document is included herein for download.

read more

Example of Affinity Chart for Quality Function Deployment (QFD) System of Asset Management

Posted by on May 9, 2017 in Downloads, LRFD | 0 comments

NCSG has helped local and state agencies develop a practical asset management program where in-service facilities are rated in terms of observed distress and two priority ranking systems for maintenance and repair is developed. These two prioritization systems are based on the “normalized raw score” (NRS) method and the “quality function deployment” (QFD) method. This document provides an example of the application of the QFD method of asset management.

read more

LRFD Article 4: LRFD for Substructures – Consideration of Deterioration of Foundations and Retaining Walls

Posted by on Dec 14, 2016 in Downloads, LRFD | 0 comments

Most, if not all, foundation elements are buried in geomaterials. This is also true for most earth retaining structures. Thus, the long-term performance of the foundation and wall elements can be affected by the corrosion or degradation potential of the geomaterials. This article summarizes the available guidance through AASHTO LRFD Bridge Design Specifications (AASHTO LRFD, 2014) and other publications.

read more

Incorporation of Foundation Deformations in AASHTO LRFD Bridge Design Process

Posted by on Oct 13, 2016 in Downloads | 0 comments

Document Info Title: Incorporation of Foundation Deformations in AASHTO LRFD Bridge Design Process Document Type: Report Authored By: Naresh C. Samtani, PE, PhD, D.GE, F.ASCE,   John M. Kulicki, PE, PhD Report Date: February 08, 2016 Sponsoring Agency: American Association of State Highway and Transportation Officials (AASHTO) This report was developed as part of the technical assistance provided through the Implementation Assistance Program (IAP) of FHWA and AASHTO and concentrates on the work...

read more

Some Practical Considerations for LRFD Implementation for Geotechnical Features – Paper

Posted by on Mar 8, 2012 in Downloads | 0 comments

State and local transportation agencies throughout the USA are at various stages of implementation of the Load and Resistance Factor Design (LRFD) as specified by the American Association of State and Highway Transportation Officials (AASHTO). This paper provides practical guidance that may assist agencies and practitioners with implementation of LRFD principles and details for geotechnical transportation features such as shallow foundations, deep foundations, earth retaining structures and earthworks.

read more

LRFD Example Problem 2 – CIP Wall with Sloping Backfill

Posted by on Oct 5, 2011 in Blog, Downloads, LRFD | 0 comments

This example problem presents a detailed solution for a typical cast-in-place (CIP) wall used by the Arizona Department of Transportation (ADOT). A sloping backfill configuration is assumed. The solution uses ADOT policies to demonstrate the application of LRFD principles in analyzing the external stability limit states that include...

read more

LRFD Example Problem 1 – CIP Wall with Level Backfill

Posted by on Oct 5, 2011 in Blog, Downloads, LRFD | 0 comments

This example problem presents a detailed solution for a typical cast-in-place (CIP) wall used by the Arizona Department of Transportation (ADOT). A level backfill configuration with a traffic barrier and live load surcharge is assumed. The solution uses ADOT policies to demonstrate the application...

read more

Presentation at Western Bridge Engineers’ Seminar – Phoenix 2011

Posted by on Sep 29, 2011 in Downloads, LRFD | 0 comments

Presentation at Western Bridge Engineers' Seminar - Phoenix 2011

read more

ADOT SF-1 (Spread Footing – Bearing Resistance and Settlement)

Posted by on Sep 3, 2011 in Downloads, LRFD | 1 comment

Development of Factored Bearing Resistance Chart by a Geotechnical Engineer for Use by a Bridge Engineer to Size Spread Footings on Soils for Service and Strength Limit States Based on Load and Resistance Factor Design (LRFD) Methodology

read more

ADOT SF-2 (Spread Footing – Limiting Eccentricity)

Posted by on Sep 3, 2011 in Downloads, LRFD | 1 comment

Limiting Eccentricity Criteria for Spread Footings based on Load and Resistance Factor Design (LRFD) Methodology

read more