Structural Steel Designer's Handbook, 3rd Edition
Use this comprehensive, A-Z guide to find a wealth of practical techniques for cost-effectively designing steel structures, from buildings to bridges.
TABLE OF CONTENTS Structural Steel Designer's Handbook, 3rd Edition
Section 11: Design Criteria for Bridges
Robert L. Nickerson, P.E.,
President, NBE, Ltd.
Assoc. Professor of Civil Engineering, University of Delaware
President, NBE, Ltd.
Hampstead, Maryland Park
Dennis Mertz, P.E., Assoc. Professor of Civil Engineering, University of Delaware
Newark, Delaware
PART 1 APPLICATION OF CRITERIA FOR COST-EFFECTIVE HIGHWAY BRIDGE DESIGN
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The purpose of this section is to provide guidance to highway bridge designers for application of standard design specifications to the more common types of bridges and to provide rules of thumb to assist in obtaining cost-effective and safe structures. Because of the complexity of modern specifications for bridge design and construction and the large number of standards and guides with which designers must be familiar to ensure adequate designs, this section does not provide comprehensive treatment of all types of bridges. Because specifications are continually being revised, readers are cautioned to use the latest edition, including interims, in practical applications.
[*]Revised Sec. 10, originally written by Frank D. Sears, Bridge Division, Federal Highway Administration, Washington, D.C. Material on ASD and LFD design was updated by Roger L. Brockenbrough.
11.1 STANDARD SPECIFICATIONS
Designs for most highway bridges in the United States are governed by the "Standard Specifications for Highway Bridges" or the "LRFD Bridge Design Specifications" of the American Association of State Highway and Transportation Officials (AASHTO), 444 N. Capitol St., NW, Washington, DC 20001. AASHTO updates these specifications annually. Necessary revisions are published as "Interim Specifications." A new edition of the Standard Specifications has been published about every fourth year, incorporating intervening "Interim Specifications." The design criteria for highway bridges in this section...
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