|
<br />Table 1.--Summary of risk analysis
<br />
<br />Site: Leaf River near Collins, Miss.
<br />Trial Design Discharge: 49,000 ft3/s
<br />Embankment Height: 231 feet
<br />Bridge Deck Length: 480 feet
<br />
<br />Estimated Capital Cost:
<br />Estimated Service Life:
<br />
<br />Sl,342,000
<br />
<br />25 years
<br />
<br />Interest Rate:
<br />
<br />5 percent
<br />
<br />Annual Capital Cost:
<br />
<br />$95,215
<br />
<br />Fl'3od Flood Max- Dura- Time Cost in dollars Total Average Proba- Risk,
<br />ft /s proba- imum tion road damage, damage bili ty dollars
<br /> bility depth of flow is Traffic Back- Over- Other dollars for inter-
<br /> over over closed inter- water topping damage in te r- val,
<br /> road- the for ruption damage damage val, t,p
<br /> way, road, repairs, to dollars
<br /> feet hours hours embank-
<br /> ment
<br />
<br />00
<br />
<br />37,000 0.048 0 0 100 0.008
<br />39,000 .040 200 200 1
<br /> 750 .007 5
<br />41,000 .033 1,300 1,300 1,850 .004 7
<br />43,000 .029 2,400 2,400
<br />44,400 .025 4,000 4,000 3,200 .004 13
<br />47,200 .020 4,200 4,200 4,100 .005 20
<br /> 9,574 .006 57
<br />51,500 .014 0.4 14 6,649 6,300 2,000 14,949
<br /> 27,080 .002 54
<br />54,200 .012 .9 22 10,449 9,762 19,000 39,2ll 46,426 .002 93
<br />56,100 .0lD 1.2 27 12,824 9,318 31,500 53,642
<br /> 75,300 .0033 248
<br />62,000 .0067 2.2 40 18,998 7,961 70,000 96,959
<br /> 115,878 .017 194
<br />66,000 .005 2.8 48 22,798 0 ll2,000 134,798 193,845 .003 582
<br />80,000 .002 4.6 68 96 77,893 0 175,000 252,893
<br />252,893 .002 506
<br />Ultimate 68 96 77,893 0 175,000 252,893
<br />
<br />Total Annual Risk
<br />Annual Capital Cost
<br />Total Expected Project Cost
<br />
<br />S 1,780
<br />$95,215
<br />$96,995
<br />
|