PART I- A COMPARISON OF 77 UNCOVERED DECKS
THE FIELD SURVEY OF THE CONDITIONS OF 777 UNCOVERED DECKS, REVEALED THAT SPALLING AND SCALING WERE THE MOST SIGNIFICANT TYPES OF DETERIORATION THAT NEEDED TO BE EVALUATED. DESIGN AND MATERIALS DATA WERE OBTAINED FROM THE PLANS AND PROJECT CONSTRUCTION FILES WERE ENTERED ON MACHINE SORT CARDS. A COMPOSITE CARD COMBINED ENOUGH INFORMATION FOR IDENTIFICATION AND DETERIORATION. TWENTY-FIVE FACTORS WERE CONSIDERED: BRIDGE TYPE AND DIMENSIONS; TYPES AND SOURCES OF MATERIALS; EQUIPMENT; AND PROCEDURES. A RATING SYSTEM WAS DEVELOPED WITH ADJUSTMENTS FOR AGE AND TRAFFIC. A COMPUTER WAS USED TO CALCULATE A RATING FOR EACH INDIVIDUAL BRIDGE AND TO OBTAIN VALUES FOR EACH ITEM OF 25 FACTORS. THESE VALUES INCLUDED AVERAGE RATING, STANDARD DEVIATION OF THE RATING, AVERAGE PLUS AND MINUS ONE STANDARD DEVIATION AND UPPER AND LOWER LIMITS OF RATINGS. NO ONE SINGLE FACTOR WAS FOUND TO BE RESPONSIBLE FOR DETERIORATION. /AUTHOR/
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Corporate Authors:
Kansas State Highway Commission
State Office Building
Topeka, KS United States 66612Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC United States 20590 -
Authors:
- Stingley, W M
- Worley, H E
- Publication Date: 0
Subject/Index Terms
- TRT Terms: Bridge decks; Computers; Deterioration; Ratings; Spalling
- Uncontrolled Terms: Scaling
- Subject Areas: Bridges and other structures; Highways; Maintenance and Preservation; Pavements;
Filing Info
- Accession Number: 00208019
- Record Type: Publication
- Source Agency: Federal Highway Administration
- Report/Paper Numbers: Study No 64-3
- Files: TRIS, USDOT
- Created Date: Feb 15 1972 12:00AM