Clay J. Naito, Ph.D., P.E.
Associate Professor and Associate Chair
Dept. of Civil and Environmental Engineering

Contact Information
Links

Current Research:

NSF: Development of a Blast and Ballistic Resistant Precast Concrete Armored Wall System

NEES-CR: Impact Forces from Tsunami-Driven Debris

Inspection Methods & Techniques to Determine Non Visible Corrosion of Prestressing Strands in Concrete Bridge Components

Daniel P. Jenny PCI Fellowship: Analytical Assessment of the Resistance of Precast Strucutres to Blast Effects

Development of a Seismic Design Methodology for Precast Diaphragms

Development of a Welding Procedure Specification for Field Welding of Precast Concrete Connections

Use of Polyurea for Blast Hardening of Concrete Construction

Estimation of Concrete Respone Under Varying Confinement

Evaluation of Bond Mechanics in Prestressed Concrete Applications

Horizontal Shear Capacity of Composite Beams Without Ties

Lateral Resistance of Plywood and Oriented Strand Board Sheathing After Accelerated Weathering

Past Research Projects

Performance of Bulb Tees with Self Consolidating Concrete

FRP Bridge Decks with RC Parapets

Blast Resistance of a Load Bearing Shear Wall Building

Lehigh@NEES Equipment Site

Reserarch Experinece for Undergraduates

Seismic Evaluation of a Three Story WoodFrame Apartment Building with Tuck-Under Parking

Design of RC Bridge Beam-Column Connections

Response of Waffle Slab Building Systems to Seismic Loads

Contact Information:
Department of Civil and Environmental Engineering
Lehigh University
Fritz Lab
13 E Packer Avenue
Bethlehem, PA 18015
Phone: 610-758-6229
Fax: 610-758-6405
E-mail: cjn3@lehigh.edu

Office Hours:
TBD by appointment

Research Interests:
Experimental and Analytical Evaluation of Reinforced and Prestressed Concrete Structures Subjected to Extreme Events including Earthquakes, Tsunamis, and Intentional Blast Demands.

Professional Preparation:

  • The University of Hawaii Manoa Civil Engineering B.S., 1993
  • The University of California Berkeley Civil Engineering M.S., 1994
  • The University of California Berkeley Civil Engineering Ph.D., 2000
  • The University of California Berkeley Structural Engineering Postdoctoral Appointment, 2000-2001
  • Licensed Professional Engineer in Civil Engineering California
  • Lehigh University, Civil Engineering Assistant Professor 2002-2007
  • Air Force Research Laboratory, Tyndall AFB, Visiting Professor Summer 2007 2008 2009
  • Lehigh University, Civil Engineering Associate Professor 2007-Present
  • Lehigh University, Civil Engineering Associate Chair 2011-Present

Recent Publications:

  1. Paczkowski, K., Riggs, H.,R., Naito, C., Lehmann, A., "A One-Dimensional Model For Impact Forces Resulting From High Mass, Low Velocity Debris," Structural Engineering and Mechanics, An Int'l Journal, Techno Press, Vol.42, No.6, 2012.
  2. Naito, C., Zimpfer, J., Sause, R., Kaufmann, E., "Effect of Environmental Conditions on Field Welding of Precast Concrete Connections," Journal of the Precast/Prestressed Concrete Institute, Vol.57, No.2, Spring 2012, pp.142-161.
  3. Naito, C., Hoemann, J., Beacraft, M., Bewick, B., "Performance And Characterization Of Shear Ties For Use In Insulated Precast Concrete Sandwich Wall Panels," ASCE Journal of Structural Engineering, Vol.138, No.1, Jan. 2012, pp.52-61 DOI: 10.1061/(ASCE)ST.1943-541X.0000430.
  4. Sause, R., Frosch, R., Ghosh, S.K., Lien, J., Naito, C., Sennour, L., Yamanishi, T., "Preview of PCI’s Japan Earthquake Reconnaissance Team Report," Journal of the Precast/Prestressed Concrete Institute, Vol. 57, No.1, Winter 2011, pp.47-51.
  5. Naito, C., Dinan, R., and Bewick, B., "Use of Precast Concrete Walls for Blast Protection of Steel Stud Construction," ASCE Journal of Performance of Constructed Facilities, Vol.25, No.5, 2011, p.454-463. DOI: 10.1061/(ASCE)CF.1943-5509.0000228.
  6. Zhang, D., Fleischman, R. B., Naito, C., and Ren, R., "Experimental Evaluation of Pretopped Precast Diaphragm Critical Flexure Joint under Seismic Demands," ASCE Journal of Structural Engineering, Vol.137, No.10, 2011, p. 1063-1074. DOI:10.1061/(ASCE)ST.1943-541X.0000352.
  7. Naito, C., Cox, D., Yu, Q., "Impact of Tsunami Generated Debris during the 2011 Tohoku Japan Tsunami," Structural Engineer, pp.24-27, Zweigwhite, November 2011 (Non-refereed).
  8. Naito, C., Jones, L., and Hodgson, I., "Development of Rating Procedures for Adjacent Prestressed Concrete Box Girder Bridges," ASCE Journal of Bridge Engineering, Vol.16, No.5, 2011, pp. 662-670. DOI:10.1061/(ASCE)BE.1943-5592.0000186.
  9. Naito, C., Sause, R., Hodgson, I., Pessiki, S., Macioce, T., "Forensic Examination of a Non-Composite Adjacent Precast Prestressed Concrete Box Beam Bridge," ASCE Journal of Bridge Engineering, Vol.15, No.4, July-August 2010, pp.408-418, DOI:10.1061/(ASCE)BE.1943-5592.0000110
  10. Jordan, J., Naito, C., "Calculating Fragment Impact Velocity from Penetration Data," International Journal of Impact Engineering, Vol. 37, No.5, May 2010, pp. 530-536, doi:10.1016/j.ijimpeng.2009.11.002
  11. Cetisli, F., Naito, C., "Concrete Subjected to Varying Confinement, I: Experimental Evaluation," Journal of Advanced Concrete Technology, Japan Concrete Institute, Vol.7, No. 2, June 2009.
  12. Cetisli, F., Naito, C., "Concrete Subjected to Varying Confinement, II: Modeling," Journal of Advanced Concrete Technology, Japan Concrete Institute, Vol.7, No. 2, June 2009.
  13. Cao, L., Naito, C., "Precast Double-Tee Floor Connectors Part II: Shear Performance," Journal of the Precast/Prestressed Concrete Institute, Vol. 54, No. 2, Spring, 2009 pp. 97-115.
  14. Naito, C., Cao, L., Peter, W., "Precast Double-Tee Floor Connectors Part I: Tension Performance," Journal of the Precast/Prestressed Concrete Institute, Vol. 54, No. 1, Winter, 2009, pp. 49-66.
  15. Naito, C., Sause, R., Thompson, B., "Investigation Of Damaged 12-Year Old Prestressed Concrete Box Beams," ASCE Journal of Bridge Engineering, Vol. 13, No. 2, Feb. 2008, pp. 139-148.
  16. Cao, L., Naito, C., "Design of Precast Diaphragm Chord Connections for In-Plane Tension Demands," ASCE Journal of Structural Engineering, Vol. 133, No. 11, November 2007, pp. 1627-1635.
  17. Cramsey, N., Naito, C., "Analytical Assessment of the Blast Resistance of Precast, Prestressed Concrete Components," Journal of the Precast/Prestressed Concrete Institute, Vol. 52, No. 6, Nov-Dec, 2007, pp. 67-80.
  18. Naito, C., Parent, G., Brunn, G., "Ultimate Strength of Self Consolidating Concrete Bulb Tee Beams," Journal of the Precast/Prestressed Concrete Institute, Vol. 51, No. 6, Nov-Dec, 2006.
  19. Naito, C., Cetisli, F., "Accuracy and Improvements for Variable and Constant Confinement Concrete Models," American Concrete Institute Special Publication 238 International Symposium on Confined Concrete, Paper SP-238-10, Detroit, MI, Dec., 2006, p. 480.
  20. Naito, C., Wheaton, K. P., "Blast Assessment of Load Bearing Reinforced Concrete Shear Walls," ASCE Practice Periodical on Structural Design and Construction, Vol. 11, No. 2, May, 2006, pp. 112-121.
  21. Fleischman, R. B., Naito, C., Restrepo, J., Sause, R., Ghosh, S. K., Wan, G., Schoettler, M., Cao, L. "Precast Diaphragm Seismic Design Methodology (DSDM) Project, Part 2: Research Program," Journal of the Precast/Prestressed Concrete Institute, Vol. 50, No. 6, Nov.-Dec., 2005, pp. 14-31. (PCI Charles C. Zollman Award for 2006)
  22. Fleischman, R., Naito, C., Restrepo, J., Sause, R., Ghosh, S., "Precast Diaphragm Seismic Design Methodology (DSDM) Project, Part 1: Design Philosophy and Research Approach," Journal of the Precast/Prestressed Concrete Institute, Vol. 50, No. 5, Sept.-Oct., 2005, pp. 68-83. (PCI Charles C. Zollman Award for 2006)
  23. Naito, C., "Anchorage of Reinforced Concrete Parapets on GFRP Bridge Decks," ASCE Journal of Composites for Construction, Vol. 9, No. 3, May-June, 2005, pp. 247-254. (2005 ASCE Journal of Composites for Construction Best Paper Award: Honorable Mention Applied Research Paper)
  24. Mosalam, K., Naito, C., Khaykina, S., "Bidirectional Cyclic Performance of Reinforced Concrete Bridge Column-Superstructure Subassemblies,” Earthquake Spectra, Vol. 18, No. 4, Nov., 2002, pp. 663-687.
  25. Mosalam, K., Naito, C., "Seismic Evaluation of Gravity-Load-Designed Column-Grid System," ASCE Journal of Structural Engineering, Vol. 128, No. 2, Feb., 2002, pp. 160-168.
  26. Naito, C., Moehle, J., Mosalam, K., "Evaluation of Bridge Beam-Column Joints Under Simulated Seismic Loading," ACI Structural Journal, Vol. 99, No. 1, Jan., 2002, pp. 62-71.

Educational Responsibilities:
Class Information can be found on the: Lehigh Course Site Website
Fall 2009: CE 365 Prestressed Concrete Design
Fall 2009: CE 159 structural Analysis 1
Fall 2006: CE 365 Prestressed Concrete Design
Spring 2006: CE 467-43 Repair and Retrofit of Reinforced Concrete Structures
Spring 2006: CE 290 Structural/Geotechnical Capstone Design
Fall 2004/2005: CE 159 - Structural Analysis
Fall 2004/2005: Engineering 5: Introduction to Structural Engineering
Spring 2004/2005: CE 266 - Project Management
Fall 2003: CE 159 - Structural Analysis
Fall 2003: Engineering 5: Introduction to Structural Engineering
2003 Research Experience for Undergraduates at the ATLSS Center
2003 Natural Hazard Mitigation in Japan Program Mentor
Spring 2003: CE 266 - Project Management
Fall 2002: CE 159 - Structural Analysis
2002 Research Experience for Undergraduates at the ATLSS Center
Spring 2002: CE 160 - Structural Design 1

Doctoral Students
Patrick Trasborg
Payam Piran Aghl
Christina Cercone

Page Last Updated Friday, 22-Feb-2013 13:40:51 EST