APPLICATION OF THE PRINCIPLES OF ENGINEERING ECONOMY TO THE SELECTION OF HIGHWAY CULVERTS

CULVERT COSTS WERE EVALUATED IN THE LONG RUN IN TERMS OF FIRST COST, MAINTENANCE, AND THE RISK OF FLOODS AND THEIR ASSOCIATED DAMAGES AND COSTS. MONEY MEASURES WERE USED TO DETERMINE CULVERT SIZE AND TO COMPARE THE RESULTS WITH THE PROCEDURE WHICH IS CURRENTLY BEING USED BY THE CALIFORNIA DIVISION OF HIGHWAYS. MONEY MEASURES ARE INTRODUCED USING THE ENGINEERING ECONOMY APPROACH, A DECISION-MAKING TECHNIQUE FOR EVALUATING PROPOSED INVESTMENTS IN MONEY TERMS. THE METHOD OF ANALYSIS FOR THE QUANTITY AND TIMING OF BASIN RUNOFF IS OFTEN QUESTIONED. HOWEVER, A MORE SERIOUS FACTOR WHICH MAY BE QUESTIONED IS, WHAT IS THE MOST ECONOMICAL FLOOD RETURN PERIOD WHICH SHOULD BE USED IN AN ANALYSIS FOR DESIGN PURPOSES{ FLOOD RETURN PERIODS ARE NORMALLY EXPRESSED IN TERMS OF THE 10-YEAR FLOOD, 20, 50, ETC. THE RESULTS OF THE STUDY INDICATE THAT A 10 TO 20 YEAR RETURN PERIOD, DETERMINED BY USING THE EXTREME PROBABILITY PLOTTING METHOD, IS THE MOST ECONOMICAL PERIOD FOR DESIGN, BASED ON THE ASSUMPTIONS USED IN THIS INITIAL STUDY.

  • Supplemental Notes:
    • No 29, 11 PP, 12 FIG, 13 REF
  • Authors:
    • Pritchett, H D
  • Publication Date: 1966-7

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  • Accession Number: 00201148
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 22 1994 12:00AM