Solving Corrosion Problems of Bridge Surfaces Could Save Billions: Report to the CongressGeneral Accounting Office, 1979 - 21 pagini |
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Pagina
... of stopping further deterioration is needed . UNITED GENERAL STATES OFFICE ACCOUNTING STANFORD GOV'T UNIVERSITY MAY 1979 DOCUMENT DEPARTMENT PSAD - 79-10 JANUARY 19 , 1979 COMPTROLLER OF THE GENERAL UNITED STATES B - 164497 (. Front Cover.
... of stopping further deterioration is needed . UNITED GENERAL STATES OFFICE ACCOUNTING STANFORD GOV'T UNIVERSITY MAY 1979 DOCUMENT DEPARTMENT PSAD - 79-10 JANUARY 19 , 1979 COMPTROLLER OF THE GENERAL UNITED STATES B - 164497 (. Front Cover.
Pagina i
... needed to restore the Nation's Federal - aid system bridge decks . GAO's survey of the 50 States and the District of Columbia identified 32 States with 162,622 Federal - aid system bridges having a moderate to very major bridge deck ...
... needed to restore the Nation's Federal - aid system bridge decks . GAO's survey of the 50 States and the District of Columbia identified 32 States with 162,622 Federal - aid system bridges having a moderate to very major bridge deck ...
Pagina ii
... deterioration . Cost - effective solutions are needed quickly to avoid using billions of dollars for com- plete replacement of the bridge decks . ( See ch . 4. ) GAO recommends that the Secretary of Trans- portation reassess the ii.
... deterioration . Cost - effective solutions are needed quickly to avoid using billions of dollars for com- plete replacement of the bridge decks . ( See ch . 4. ) GAO recommends that the Secretary of Trans- portation reassess the ii.
Pagina iii
... NEEDED Weaknesses also exist in the Federal Highway Administration's evaluation process to assess the performance of the technologies in extend- ing the service life of the bridge decks . For example , the Federal Highway Administration ...
... NEEDED Weaknesses also exist in the Federal Highway Administration's evaluation process to assess the performance of the technologies in extend- ing the service life of the bridge decks . For example , the Federal Highway Administration ...
Pagina v
... NEEDED 15 Formal long - term data collection and evaluation system is needed Conclusion 15 16 Recommendation to the Secretary of Transportation Agency comments 22 17 17 6 SCOPE OF REVIEW 18 APPENDIX I II Page States with moderate to ...
... NEEDED 15 Formal long - term data collection and evaluation system is needed Conclusion 15 16 Recommendation to the Secretary of Transportation Agency comments 22 17 17 6 SCOPE OF REVIEW 18 APPENDIX I II Page States with moderate to ...
Termeni și expresii frecvente
AGENCY COMMENTS Assistant Secretary better identify bridge bridge deck deterioration bridge deck problem bridge deck protective bridge decks needing bridge decks requiring BRIDGE DETERIORATION PROBLEMS bridge repair bridges so deteriorated chloride-contaminated bridge decks collection and evaluation construction CONTAMINATED BRIDGE DECKS contaminated decks cost COST-EFFECTIVE METHOD data retrieval program dated November 14 deck protective systems Department of Transportation District of Columbia eral Eschwege Evaluation Program existing bridge decks Federal Highway Administration Federal Highway Administration's Federal-aid system bridge fiscal year 1979 formal long-term data funds HEAVILY CONTAMINATED BRIDGE Highway Administration officials Highway Administration recognizes Highway officials identify bridge decks interstate bridge decks letter dated November long-term data collection Maryland minor repair versus number of bridges performance data portation potential benefit/cost ratio questionnaire rate of corrosion salt applications save billions Secretary for Administration SECRETARY OF TRANSPORTATION system bridge decks systems on bridge techniques tective systems U.S. General Accounting unprotected bridge decks
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Pagina 19 - Montana, Nebraska, Nevada, New Jersey, New York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania (for payment of temporary indebtedness), South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, and Wyoming.
Pagina i - Administration has found that some unprotected bridge decks require major repair within 5 to 10 years, and often must be replaced after 15 years of service. The major cause of this early deterioration is corrosion of the reinforcing steel bars in the bridge deck, brought about by chloride chemicals which are used to melt snow.
Pagina 3 - ... Various Parameters of Design and Construction." The purpose of this investigation is to provide administrators and designers with factual data on which to base decisions as to the type of protection to provide for bridge decks constructed in corrosive environments. The specific study objective is: to determine the relative time-to-corrosion of reinforcing steel embedded in concrete slabs, fabricated from various mix designs and construction procedures, when the slabs are subjected to periodic...
Pagina 7 - Administration study indicated that, if the 29,000 interstate bridge decks requiring minor repair today were neglected to the extent that they require moderate repair, the current repair cost of about $600 million would increase by an additional $4.4 billion. These estimates are in 1975 dollars.
Pagina ii - PSAD-79-10 later. The potential benefit/cost ratio of repairing and protecting an existing bridge deck needing only minor repair versus completely replacing the deck at a later date is 2.75 to 1.
Pagina i - Tear ShMl. Upon removal, the report cover date should be noted hereon PSAD-79-10 later.
Pagina 1 - Administration found that unprotected bridge decks receiving deicing chemicals require major repair within 5 to 10 years, and often must be replaced after only 15 years of service.
Pagina 8 - State funds is a major reason why bridge decks still in good condition are not being protected by a majority of the 32 States with a serious bridge deterioration problem.
Pagina 1 - Transportation officials requested the Transportation Research Board of the National Academy of Sciences to prepare a state-of-the-art report on the concrete bridge deck deterioration problem.