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Investigations of a precast bridge deck system

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Okla State Agency	Transportation Center, Oklahoma
Okla Agency Code	'OKT'
Title	Investigations of a precast bridge deck system
Authors	Ley, Tyler. Ghashgesh, Mostafa. Patil, Siddarth. Oklahoma State University. School of Civil and Environmental Engineering. Oklahoma Transportation Center.
Publisher	Oklahoma Transportation Center
Publication Date	2010-07-01
Publication type	Research Report/Study
Subject	Bridges--Floors. Precast concrete construction. Bridge decks.
Purpose	Recent studies suggest more than 60% of the structurally deficient bridge ratings in Oklahoma are due to severe bridge deck deterioration. Because the bridges in Oklahoma and across the nation are in such dire need of improvement and the associated costs are so overwhelming, the Federal Highway Administration (FHWA) and the Oklahoma Transportation Center (OTC) have made it a priority to seek new methods to economically repair and construct bridges. What is needed is a bridge deck system that is durable, rapid to construct, and economical.; Improved methods of bridge deck construction are greatly needed. Bridge decks are often the first element to require repair or replacement because of its direct exposure to the elements and tire wear. This report presents a new precast overhang system that allows for significant improvements in construction speed, economy, and safety while meeting the AASHTO requirements and providing a serviceable structure. Results also indicate that the system will allow a support beam to be removed in certain circumstances. Welded wire reinforcing were also investigated to replace tied reinforcing bars with partial depth panels to improve the economy, constructability, and construction speed of bridge decks. Bridge decks have been constructed and tested that have used tied reinforcing and welded wire mats. The improved ability of the wire mat to help resist cracking could allow an owner either greater construction tolerances for the reinforcement placement or improved crack control and hence long term durability.
Notes	Final report; OTCREOS7.1-31-F
OkDocs Class#	Z2285.8 I62p 2010
Digital Format	PDF, Adobe Reader required
ODL electronic copy	Downloaded from agency website: http://www.oktc.org/otc/files/finalReports/OTCREOS7.1-31-F.pdf
Rights and Permissions	This Oklahoma state government publication is provided for educational purposes under U.S. copyright law. Other usage requires permission of copyright holders.
Language	English
Date created	2013-03-21
Date modified	2013-03-21

Title	OTCREOS7.1-31-F 1
Full text	ECONOMIC ENHANCEMENT THROUGH INFRASTRUCTURE STEWARDSHIP INVESTIGATIONS OF A PRECAST BRIDGE DECK SYSTEM TYLER LEY, PH.D. MOSTAFA GHASHGESH SIDDHARTH PATIL OTCREOS7.1-31-F Oklahoma Transportation Center 2601 Liberty Parkway, Suite 110 Midwest City, Oklahoma 73110 Phone: 405.732.6580 Fax: 405.732.6586 www.oktc.org
Date created	2013-03-21
Date modified	2013-03-21

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