00209266

Component

https://onlinepubs.trb.or...bproceedings/11/11-019.pdf

FEATURES WHICH INFLUENCE THE USE OF CREOSOTED BRIDGES IN THE STATE OF TEXAS ARE DISCUSSED. THE MAIN FACTORS ARE THAT: (1) TIMBER PRICES ARE ALMOST ON A COMPARABLE COMPETITIVE BASIS WITH STEEL AND REINFORCED CONCRETE, (2) CLIMATIC CONDITIONS ON THE TEXAS COAST ARE HARD ON CREOSOTED DOUGLAS FIR, HOWEVER, IT HAS BEN USED EXTENSIVELY IN THE CONSTRUCTION OF THREE RATHER LARGE BRIDGES, (3) FIRE HAZARD MUST BE CONSIDERED IN TIMBER BRIDGES AND MOST STATE HIGHWAY DEPARTMENTS DO NOT HAVE CONSTITUTIONAL AUTHORITY TO INSURE TIMBER STRUCTURES AGAINST DESTRUCTION BY FIRE, AND (4) RECONSTRUCTION AND TRAFFIC DETOUR COSTS MUST BE CONSIDERED IN USE OF A SEMI-PERMANENT MATERIAL SUCH AS TIMBER. THESE FACTORS MUST BE TAKEN INTO CONSIDERATION IN SECURING A COMPARISON IN COST OF A BRIDGE STRUCTURE OF THE VARIOUS TYPES OF MATERIALS.

Vol 11, Pt 1, P 127; part of Report of Committee on Highway Design: A Symposium on the Economics of Low Cost Highway Bridges. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01490418

1932

Highway Research Board Proceedings

Digital/other

Alternatives analysis; Bridges; Climate; Costs; Creosote; Detours; Economics; Fires; Hazards; Reconstruction; Timber

Bridges and other structures; Economics; Finance; Highways; Society

TRIS, TRB

Jun 1 1971 12:00AM

• A NEW THEORY OF FROST HEAVING
• DISCUSSION ON FROST HEAVING
• DISCUSSION ON LOW COST BRIDGES
• ECONOMICS OF LOW COST HIGHWAY BRIDGES
• ECONOMICS OF LOW COST HIGHWAY BRIDGES
• FACTORS AFFECTING VOLUME CHANGES IN CONCRETE AND THEIR SIGNIFICANCE IN DESIGN
• FIELD EXPERIMENTS IN SUBGRADE DRAINAGE AND TREATMENT
• FIELD METHODS FOR MEASURING TIRE WEAR
• Fillers and Bedding Courses for Brick Pavements
• FUNCTIONS OF STEEL REINFORCEMENT IN CONCRETE PAVEMENTS AND PAVEMENT BASES
• LOAD LIMITATIONS ON HIGHWAYS
• LOW COST STEEL HIGHWAY-BRIDGES
• REPORT ON CULVERT INVESTIGATION
• REPORT ON STATE CONTROL OF TRAFFIC
• REPORT ON TRAFFIC LAW OBSERVANCE AND ENFORCEMENT METHODS
• REPORT ON VEHICLE AND HIGHWAY MECHANICS AS RELATED TO TRAFFIC
• RESISTANCE OF CONCRETE TO FROST ACTION AS AFFECTED BY THE WATER-CEMENT RATIO
• SOME PRINCIPLES OF SOIL SURVEYING AND SOIL MAPPING FOR ROAD PURPOSES
• TAXATION AND EXPENDITURES IN THE STATE OF WISCONSIN
• THE AIR RESISTANCE OF MOTOR VEHICLES
• THE ECONOMICS OF LOW COST BRIDGES
• THE EFFECT OF HOT CEMENT ON TIME OF SET AND WORKABILITY OF CONCRETE
• THE EFFECTIVENESS OF CALCIUM CHLORIDE AS A DUST PALLIATIVE AND ITS VALUE TO GENERAL ROAD MAINTENANCE
• THE SIGNIFICANCE OF SODIUM SULFATE AND FREEZING AND THAWING TESTS OF MINERAL AGGREGATES
• TRAFFIC CAPACITY
• TREATMENT OF ICY PAVEMENTS
• USE OF CONCRETE AS AN ECONOMIC HIGHWAY BRIDGE MATERIAL
• VOLUME CHANGES IN CONCRETE SLABS IN THE FIELD