Engineering Economy
Engineering Economy
16th Edition
ISBN: 9780133582819
Author: Sullivan
Publisher: DGTL BNCOM
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Chapter 14, Problem 11P
To determine

Selecting the alternate.

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Various techniques have been proposed to curb cross-border drug smuggling into a country. The costs of implementing each strategy along a particularlyrugged section of the border are indicated below. The table also includes a score that is compiled based on deterrence, interdiction, and apprehension, witha higher score indicating better performance. For a budget of $51 million,determine the total cost of the most cost-effective techniques. Cost, $ Activity Tethered Aerostats Boots-on-the-Ground Fence Motion Sensors Score 4.3 8 40.1 52 13.7 12 7.8 7 Seismic Sensors 5.4 Drones 12.4 26
The city engineer and economic development directors are evaluating two sites for construction of a multipurpose sports arena. The sites are downtown (DT) and southwest (SW) of the metropolitan area. The city already owns enough land at the DT site; however, the land for a parking garage will cost $1 million, and construction costs will be $16 million for the parking garage, infrastructure relocation, and drainage. The SW site is 30 km from downtown, but the land will be donated by a developer who knows that an arena at this site will dramatically increase the value of the remainder of his land holdings. Because of its centralized location, there will be greater attendance at most of the events held at the DT site. This will result in more revenue to vendors and local merchants in the amount of $700,000 per year. Additionally, the average attendee will not have to travel as far, resulting in annual benefits of $400,000 per year. All other costs and revenues are expected to be the same…
Problem 2: As a building designer, you have been asked to analyze and select the best window frame type alternative-either aluminum or steel. The project is located in a remote area, and the nearest industrial area hosting steel and aluminum windows frames manufacturers is 250 km away. All project windows are identical, and the circumference of the window frame is 6.2 meter. A crew of two labors is required to manufacture one steel frame. It takes 2.5 hours to manufacture the first window every day, and the learning rate is 0.9. The number of production units is per day is limited to 8. The weight of steel is 12 kg per meter, and the weight of aluminum is 4.5 kg per meter. The cost of steel is 0.4 OMR per kg and the cost of aluminum 1.1 OMR per kg. If 45 windows frames are required for the project, the crew cost is 3 OMR per hour for steel frames and 3.6 for aluminum frames, and the transportation, price is 0.01 OMR per kg per 50 km, which alternative would you select?
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