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

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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

Evaluation of Weathered Oriented Strand Board and Plywood Shear Wall Capacity For Use in Woodframe Construction

Introduction:
Oriented Strand Board O.S.B. offers an economical alternative to plywood as a sheathing material for woodframe construction. Its popularity has been assisted by its experimentally proven performance in shear wall tests. A question that remains is its durability. Subjected to extended weathering, will O.S.B. continue to provide performance comparable to that of plywood? To answer this question, an experimental program is proposed.

Subassembly Development
The focus of the test program will be the evaluation of the performance of exterior shear walls under various weathered conditions. The performance might be characterized best by the behavior of the connection between the sheathing and the sill plate or stud (Figure 1). For simplicity in testing, the sill plate to sheathing connection will be modeled experimentally. The test setup consists of a split sill plate or vertical stud nailed to a portion of sheathing panel. Displacement will be applied to either end of the sill using an Instron test machine.

Research Team
Clay Naito, Principal Investigator
Kaysi-ann Spence, Undergraduate Research Assistant
Mel Oxenreider, Undergraduate Research Assistant

Page Last Updated Tuesday, 03-Aug-2004 13:15:35 EDT