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

Contact Information

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

PCI Daniel P. Jenny Research Fellowship
Analytical Assessment of the Resistance of Precast Structures to Blast Effects

Executive Summary
Terrorist attacks have been carried out on our infrastructure at home and abroad at an alarming rate in the past decade. This growing threat has emphasized the need for protection of our civil infrastructure from the effects of explosive loading. Unfortunately both the basic knowledge and expertise on blast resistant design in the US is limited. While research has been conducted on reinforced concrete (RC) and structural steel, work has been limited in the area of prestressed/precast concrete. Precast/prestressed concrete offers many advantages in providing blast resistance. The prestressing properties allow for additional strength and in some cases the potential for a self centering ability after a blast event. In addition, advanced blast resistant materials can be readily incorporated into precast elements at the plant. Quantifying these benefits could provide significant support to creating a total precast solution for building construction. To address this need a research project on blast assessment of precast/prestressed structures is proposed. The research will analytically examine conventional precast building elements for blast resistance. In addition the potential blast vulnerability of precast connections will be examined. The fellowship will support the work of one Masters Student for one year. The work will be conducted in collaboration with High Concrete Structures of Denver, Pa.

Research Team
Assistant Professor Clay Naito, Principal Investigator

Precast/Prestressed Concrete Institute
High Concrete Structures, Inc.

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.

Page Last Updated Monday, 17-Sep-2007 10:25:38 EDT