
Concept explainers
Which of the two alternatives should be selected.

Answer to Problem 33P
The Option to be implemented is Cantilever bridge, since it results in a lower
Explanation of Solution
Given information: (all costs in $Million)
Installation Cost:
Suspension Bridge $585
Cantilever Bridge $470
Land acquisition Cost:
Suspension Bridge $120
Cantilever Bridge $95
Annual Operation and Maintenance costs:
Suspension Bridge $2
Cantilever Bridge $3
Annual Increase in Operation and Maintenance costs:
Suspension Bridge 4%
Cantilever Bridge 3%
Salvage Value in year 50:
Suspension Bridge $30
Cantilever Bridge $27
Rate of Interest for calculation: 8%.
Based on the above information, the following tables outlines the
Suspension Bridge:
Year | Particulars (Figures in Million) | Cash flow | Present value Factor @8% | Present value |
0 | Installation Cost | $585.00 | 1.0000 | $585.00 |
0 | Land Cost | $120.00 | 1.0000 | $120.00 |
1 | Operating Costs | $2.00 | 0.9259 | $1.85 |
2 | Operating Costs | $2.08 | 0.8573 | $1.78 |
3 | Operating Costs | $2.16 | 0.7938 | $1.71 |
4 | Operating Costs | $2.25 | 0.7350 | $1.65 |
5 | Operating Costs | $2.34 | 0.6806 | $1.59 |
6 | Operating Costs | $2.43 | 0.6302 | $1.53 |
7 | Operating Costs | $2.53 | 0.5835 | $1.48 |
8 | Operating Costs | $2.63 | 0.5403 | $1.42 |
9 | Operating Costs | $2.74 | 0.5002 | $1.37 |
10 | Operating Costs | $2.85 | 0.4632 | $1.32 |
11 | Operating Costs | $2.96 | 0.4289 | $1.27 |
12 | Operating Costs | $3.08 | 0.3971 | $1.22 |
13 | Operating Costs | $3.20 | 0.3677 | $1.18 |
14 | Operating Costs | $3.33 | 0.3405 | $1.13 |
15 | Operating Costs | $3.46 | 0.3152 | $1.09 |
16 | Operating Costs | $3.60 | 0.2919 | $1.05 |
17 | Operating Costs | $3.75 | 0.2703 | $1.01 |
18 | Operating Costs | $3.90 | 0.2502 | $0.98 |
19 | Operating Costs | $4.05 | 0.2317 | $0.94 |
20 | Operating Costs | $4.21 | 0.2145 | $0.90 |
21 | Operating Costs | $4.38 | 0.1987 | $0.87 |
22 | Operating Costs | $4.56 | 0.1839 | $0.84 |
23 | Operating Costs | $4.74 | 0.1703 | $0.81 |
24 | Operating Costs | $4.93 | 0.1577 | $0.78 |
25 | Operating Costs | $5.13 | 0.1460 | $0.75 |
25 | Maintenance Cost | $185.00 | 0.1460 | $27.01 |
26 | Operating costs | $5.33 | 0.1352 | $0.72 |
27 | Operating costs | $5.54 | 0.1252 | $0.69 |
28 | Operating costs | $5.77 | 0.1159 | $0.67 |
29 | Operating costs | $6.00 | 0.1073 | $0.64 |
30 | Operating costs | $6.24 | 0.0994 | $0.62 |
31 | Operating costs | $6.49 | 0.0920 | $0.60 |
32 | Operating costs | $6.75 | 0.0852 | $0.58 |
33 | Operating costs | $7.02 | 0.0789 | $0.55 |
34 | Operating costs | $7.30 | 0.0730 | $0.53 |
35 | Operating costs | $7.59 | 0.0676 | $0.51 |
36 | Operating costs | $7.89 | 0.0626 | $0.49 |
37 | Operating costs | $8.21 | 0.0580 | $0.48 |
38 | Operating costs | $8.54 | 0.0537 | $0.46 |
39 | Operating costs | $8.88 | 0.0497 | $0.44 |
40 | Operating costs | $9.23 | 0.0460 | $0.42 |
41 | Operating costs | $9.60 | 0.0426 | $0.41 |
42 | Operating costs | $9.99 | 0.0395 | $0.39 |
43 | Operating costs | $10.39 | 0.0365 | $0.38 |
44 | Operating costs | $10.80 | 0.0338 | $0.37 |
45 | Operating costs | $11.23 | 0.0313 | $0.35 |
46 | Operating costs | $11.68 | 0.0290 | $0.34 |
47 | Operating costs | $12.15 | 0.0269 | $0.33 |
48 | Operating costs | $12.64 | 0.0249 | $0.31 |
49 | Operating costs | $13.14 | 0.0230 | $0.30 |
50 | Operating costs | $13.67 | 0.0213 | $0.29 |
50 | Salvage Value | ($30.00) | 0.0213 | ($0.64) |
Net cash outflow | $773.80 |
Cantilever Bridge:
Year | Particulars (Figures in Million) | Cash flow | Present value Factor @8% | Present value |
0 | Installation Cost | $470.00 | 1.0000 | $470.00 |
0 | Land Cost | $95.00 | 1.0000 | $95.00 |
1 | Operating Costs | $3.00 | 0.9259 | $2.78 |
2 | Operating Costs | $3.09 | 0.8573 | $2.65 |
3 | Operating Costs | $3.18 | 0.7938 | $2.52 |
4 | Operating Costs | $3.28 | 0.7350 | $2.41 |
5 | Operating Costs | $3.38 | 0.6806 | $2.30 |
6 | Operating Costs | $3.48 | 0.6302 | $2.19 |
7 | Operating Costs | $3.58 | 0.5835 | $2.09 |
8 | Operating Costs | $3.69 | 0.5403 | $1.99 |
9 | Operating Costs | $3.80 | 0.5002 | $1.90 |
10 | Operating Costs | $3.91 | 0.4632 | $1.81 |
11 | Operating Costs | $4.03 | 0.4289 | $1.73 |
12 | Operating Costs | $4.15 | 0.3971 | $1.65 |
13 | Operating Costs | $4.28 | 0.3677 | $1.57 |
14 | Operating Costs | $4.41 | 0.3405 | $1.50 |
15 | Operating Costs | $4.54 | 0.3152 | $1.43 |
16 | Operating Costs | $4.67 | 0.2919 | $1.36 |
17 | Operating Costs | $4.81 | 0.2703 | $1.30 |
18 | Operating Costs | $4.96 | 0.2502 | $1.24 |
19 | Operating Costs | $5.11 | 0.2317 | $1.18 |
20 | Operating Costs | $5.26 | 0.2145 | $1.13 |
21 | Operating Costs | $5.42 | 0.1987 | $1.08 |
22 | Operating Costs | $5.58 | 0.1839 | $1.03 |
23 | Operating Costs | $5.75 | 0.1703 | $0.98 |
24 | Operating Costs | $5.92 | 0.1577 | $0.93 |
25 | Operating Costs | $6.10 | 0.1460 | $0.89 |
25 | Maintenance Cost | $210.00 | 0.1460 | $30.66 |
26 | Operating costs | $6.28 | 0.1352 | $0.85 |
27 | Operating costs | $6.47 | 0.1252 | $0.81 |
28 | Operating costs | $6.66 | 0.1159 | $0.77 |
29 | Operating costs | $6.86 | 0.1073 | $0.74 |
30 | Operating costs | $7.07 | 0.0994 | $0.70 |
31 | Operating costs | $7.28 | 0.0920 | $0.67 |
32 | Operating costs | $7.50 | 0.0852 | $0.64 |
33 | Operating costs | $7.73 | 0.0789 | $0.61 |
34 | Operating costs | $7.96 | 0.0730 | $0.58 |
35 | Operating costs | $8.20 | 0.0676 | $0.55 |
36 | Operating costs | $8.44 | 0.0626 | $0.53 |
37 | Operating costs | $8.69 | 0.0580 | $0.50 |
38 | Operating costs | $8.96 | 0.0537 | $0.48 |
39 | Operating costs | $9.22 | 0.0497 | $0.46 |
40 | Operating costs | $9.50 | 0.0460 | $0.44 |
41 | Operating costs | $9.79 | 0.0426 | $0.42 |
42 | Operating costs | $10.08 | 0.0395 | $0.40 |
43 | Operating costs | $10.38 | 0.0365 | $0.38 |
44 | Operating costs | $10.69 | 0.0338 | $0.36 |
45 | Operating costs | $11.01 | 0.0313 | $0.34 |
46 | Operating costs | $11.34 | 0.0290 | $0.33 |
47 | Operating costs | $11.69 | 0.0269 | $0.31 |
48 | Operating costs | $12.04 | 0.0249 | $0.30 |
49 | Operating costs | $12.40 | 0.0230 | $0.29 |
50 | Operating costs | $12.77 | 0.0213 | $0.27 |
50 | Salvage Value | ($27.00) | 0.0213 | ($0.58) |
Net cash outflow | $649.48 |
Net present value is the difference of Sum of Present values of cash inflows and Sum of Present values of cash outflows. If the value is positive then the project may be accepted. While evaluation of two or more alternatives takes place, then the proposal with the higher net present value may be selected since it results in a greater
In the given scenario, Present values are calculated by calculating the present values of cash inflows in the form of salvage value and cash outflows such as installation cost and operating cost.
In case of the suspension bridge, Installation Cost is $575 Million, Land Cost is $120 Million and Annual Operating costs are $2 Million with an increase of 4% each year. There is a maintenance cost of $180 Million in Year 25.Salvage value in year 50 is $30 Million.
In case of the cantilever bridge, Installation Cost is $470 Million, Land Cost is $95 Million and Annual Operating costs are $3 Million with an increase of 3% each year. There is a maintenance cost of $210 Million in Year 25. Salvage value in year 50 is $27 Million.
Present value factor is calculated as 1/1.08 ^ N where N is the year of operation of the bridge.
Conclusion:
Hence the bridge to be constructed is the Cantilever bridge, since it results in lower overall cash outflow over the period of 50 years.
Want to see more full solutions like this?
Chapter 5 Solutions
ENGINEERING ECO ANALYSIS W/STUDY GUIDE
- In a small open economy with a floating exchange rate, the supply of real money balances is fixed and a rise in government spending ______ Group of answer choices Raises the interest rate so that net exports must fall to maintain equilibrium in the goods market. Cannot change the interest rate so that net exports must fall to maintain equilibrium in the goods market. Cannot change the interest rate so income must rise to maintain equilibrium in the money market Raises the interest rate, so that income must rise to maintain equilibrium in the money market.arrow_forwardSuppose a country with a fixed exchange rate decides to implement a devaluation of its currency and commits to maintaining the new fixed parity. This implies (A) ______________ in the demand for its goods and a monetary (B) _______________. Group of answer choices (A) expansion ; (B) contraction (A) contraction ; (B) expansion (A) expansion ; (B) expansion (A) contraction ; (B) contractionarrow_forwardAssume a small open country under fixed exchanges rate and full capital mobility. Prices are fixed in the short run and equilibrium is given initially at point A. An exogenous increase in public spending shifts the IS curve to IS'. Which of the following statements is true? Group of answer choices A new equilibrium is reached at point B. The TR curve will shift down until it passes through point B. A new equilibrium is reached at point C. Point B can only be reached in the absence of capital mobility.arrow_forward
- A decrease in money demand causes the real interest rate to _____ and output to _____ in the short run, before prices adjust to restore equilibrium. Group of answer choices rise; rise fall; fall fall; rise rise; fallarrow_forwardIf a country's policy makers were to continously use expansionary monetary policy in an attempt to hold unemployment below the natural rate , the long urn result would be? Group of answer choices a decrease in the unemployment rate an increase in the level of output All of these an increase in the rate of inflationarrow_forwardA shift in the Aggregate Supply curve to the right will result in a move to a point that is southwest of where the economy is currently at. Group of answer choices True Falsearrow_forward
- An oil shock can cause stagflation, a period of higher inflation and higher unemployment. When this happens, the economy moves to a point to the northeast of where it currently is. After the economy has moved to the northeast, the Federal Reserve can reduce that inflation without having to worry about causing more unemployment. Group of answer choices True Falsearrow_forwardThe long-run Phillips Curve is vertical which indicates Group of answer choices that in the long-run, there is no tradeoff between inflation and unemployment. that in the long-run, there is no tradeoff between inflation and the price level. None of these that in the long-run, the economy returns to a 4 percent level of inflation.arrow_forwardSuppose the exchange rate between the British pound and the U.S. dollar is £1 = $2.00. The U.S. government implementsU.S. government implements a contractionary fiscal policya contractionary fiscal policy. Illustrate the impact of this change in the market for pounds. 1.) Using the line drawing tool, draw and label a new demand line. 2.) Using the line drawing tool, draw and label a new supply line. Note: Carefully follow the instructions above and only draw the required objects.arrow_forward
- Just Part D please, this is for environmental economicsarrow_forward3. Consider a single firm that manufactures chemicals and generates pollution through its emissions E. Researchers have estimated the MDF and MAC curves for the emissions to be the following: MDF = 4E and MAC = 125 – E Policymakers have decided to implement an emissions tax to control pollution. They are aware that a constant per-unit tax of $100 is an efficient policy. Yet they are also aware that this policy is not politically feasible because of the large tax burden it places on the firm. As a result, policymakers propose a two- part tax: a per unit tax of $75 for the first 15 units of emissions an increase in the per unit tax to $100 for all further units of emissions With an emissions tax, what is the general condition that determines how much pollution the regulated party will emit? What is the efficient level of emissions given the above MDF and MAC curves? What are the firm's total tax payments under the constant $100 per-unit tax? What is the firm's total cost of compliance…arrow_forward2. Answer the following questions as they relate to a fishery: Why is the maximum sustainable yield not necessarily the optimal sustainable yield? Does the same intuition apply to Nathaniel's decision of when to cut his trees? What condition will hold at the equilibrium level of fishing in an open-access fishery? Use a graph to explain your answer, and show the level of fishing effort. Would this same condition hold if there was only one boat in the fishery? If not, what condition will hold, and why is it different? Use the same graph to show the single boat's level of effort. Suppose you are given authority to solve the open-access problem in the fishery. What is the key problem that you must address with your policy?arrow_forward
- Principles of Economics (12th Edition)EconomicsISBN:9780134078779Author:Karl E. Case, Ray C. Fair, Sharon E. OsterPublisher:PEARSONEngineering Economy (17th Edition)EconomicsISBN:9780134870069Author:William G. Sullivan, Elin M. Wicks, C. Patrick KoellingPublisher:PEARSON
- Principles of Economics (MindTap Course List)EconomicsISBN:9781305585126Author:N. Gregory MankiwPublisher:Cengage LearningManagerial Economics: A Problem Solving ApproachEconomicsISBN:9781337106665Author:Luke M. Froeb, Brian T. McCann, Michael R. Ward, Mike ShorPublisher:Cengage LearningManagerial Economics & Business Strategy (Mcgraw-...EconomicsISBN:9781259290619Author:Michael Baye, Jeff PrincePublisher:McGraw-Hill Education





