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Each download presented here is for educational purposes only and is not intended to render engineering or other professional services. Use of the download in whole or in part for design, construction or any other application is at the sole risk of the user. If such engineering or professional services are required, the assistance of an appropriate professional should be sought. NCS Consultants, LLC, shall not be responsible or liable in any way for any errors, omissions, or damages arising out of the use of the information provided in any download.
- Technical Downloads
- LRFD Related Part 1
- LRFD Related Part 2
- LRFD Related Part 3
- Other Technical Presentations
- Miscellaneous Downloads
- Resources
- Soils and Foundations Reference Manual -
Volume I and Volume II (December 2006) – Prepared by Naresh Samtani and Ed Nowatzki for the Federal Highway Administration. Note: You need to download each volume separately.
- Samtani, N.C., Nowatzki, E.A.and Mertz, D.R., Selection of Spread Footings on Soils to Support Highway Bridge Structures. Federal Highway Administration (FHWA) Publication No. FHWA-RC/TD-10-001, February 2010.
- Hollow-Core Soil Nails State-of-the-Practice (April 2006) – Prepared by Naresh Samtani and Ed Nowatzki for the Federal Highway Administration.
- Hollow Bar Soil Nails Review of Corrosion Factors and Mitigation Practice (August 2010) – Prepared by Naresh Samtani and Ed Nowatzki for the Federal Highway Administration.
- Integrity testing of drilled shafts – existing and new techniques by N.C. Samtani, F. Jalinoos and D.M. Poland. The paper was presented by Dr. Samtani at ADSC’s GEO3 conference in Dallas, TX November 6-9, 2005.
- Some Practical Considerations for LRFD Implementation for Geotechnical Features – Paper by N.C. Samtani. The paper was presented by Dr. Samtani at the 56th Annual Minnesota Geotechnical Engineering Conference, Minneapolis, Minnesota, February 29, 2008.
- LRFD Example Problem 1 – CIP Wall with Level Backfill
- LRFD Example Problem 2 – CIP Wall with Sloping Backfill
- Presentation at Western Bridge Engineers’ Seminar – Phoenix 2011
- Development of Drilled Shaft Axial Resistance Charts for Use by Bridge Engineers Based on Load and Resistance Factor Design (LRFD) Methodology ADOT DS-1 (Drilled Shaft – Axial Resistance)
- Interim Guidance – Design of Drilled Shafts in Gravels and Gravelly Soils Exhibiting Drained Behavior ADOT DS-2 (Drilled Shaft – Gravels and Gravelly Soils)
- Analysis of Drilled Shafts Subjected to Lateral Loads Based on Load and Resistance Factor (LRFD) Methodology ADOT DS-3 (Drilled Shaft – Lateral Analysis)
- 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 ADOT SF-1 (Spread Footing – Bearing Resistance and Settlement)
- Limiting Eccentricity Criteria for Spread Footings based on Load and Resistance Factor Design (LRFD) Methodology ADOT SF-2 (Spread Footing – Limiting Eccentricity)
- Resistance Factors for the Estimation of Factored Sliding and Bearing Resistance for Spread Footings of Gravity and Semi-gravity Walls based on Load and Resistance Factor Design (LRFD) Methodology ADOT SF-3 (Spread Footing – Sliding and Bearing Resistance Factors)
- LRFD Article 3: LRFD for Substructures – Calibration of Resistance Factors for Pullout in MSE Walls Based on Fitting With ASD - by Naresh Samtani. Published April 15, 2009 (R0). NCS Article #: 01-0409-R0.
- Some Practical Considerations for LRFD Implementation for Geotechnical Features. Presented by Naresh Samtani at 56th Annual Minnesota Geotechnical Engineering Conference, Minneapolis, Minnesota, February 29, 2008.
- Practical Suggestions for Implementation of LRFD Specifications for Geotechnical Features. Presented by Naresh Samtani at the 2008 TRB (Transportation Research Board) Conference in Washington D.C. on January 16, 2008.
- LRFD Article 2: LRFD for Substructures – Concept of Failure and Reliability Index - by Naresh Samtani. Revised May 8, 2007 (R0). NCS Article #: 01-0607-R0.
- LRFD For Bridge Substructures Presentation Notes (AzSCE May 8, 2007) - Presented by Naresh Samtani to the Bridge Technical Comittee of the AzSCE. (Revised May 18, 2007)
- LRFD Article 1: LRFD for Substructures – Limit States and Interaction between Structural and Geotechnical Specialists - by Naresh Samtani. Revised May 8, 2007 (R0). NCS Article #: 01-0507-R0.
- A Primer on LRFD (January 10, 2006) – Presentation notes from a Naresh Samtani presentation to the AzSCE Bridge Technical Committee. Read more about our LRFD work.
- Geotechnical Remediation for a Highway Crossing an Earth Fissure (November, 2006) – Slide notes from a Naresh Samtani presentation at the November 6, 2006 ADOT DIRP meeting, and at the November 17, 2006 University of Arizona, Civil Engineering Department Seminar Series. Read Learn Morermation about the Loop 202: University to Southern Project.
- ADOT and MSE Walls – What is the latest? (July 12, 2005) – Slide notes from a Naresh Samtani presentation to the AzSCE Bridge Technical Committee.
- Ed Nowatzki’s Veterans Memorial Overpass (VMO) Presentation - Notes from the presentation given at the 2005 Roads and Streets Conference in Tucson, AZ. Read more about the VMO Project.
- The Ultimate Geotechnical Engineering Challenge by Edward A. Nowatzki (May 2007). A retrospective on his work on the geotechnical aspects of the Apollo 11 lunar module or “LM” while working for Grumman Aircraft Engineering Company in the late 1960′s.
- Earth Fissure Field Trip Handout (6-29-06): Red Mountain Freeway (Loop 202) – University to Southern
- NCS Geotechnical Training Courses Brochure
- A partial version of the MSE Wall Design Checklist prepared by NCS for ADOT
- A collection of wall and abutment photos from the VMO Project
- NCS Sample Soil and Rock Logs
- NCS Sample Lab Data Presentation
- NCS Sample Fence Diagram
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