Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 3, Problem 3.5P
To determine
One-way haul time
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1) Suppose you are transport manager and asked to evaluate intermodal versus unimodal transportation for Istanbul-Izmir road using truck or truck+rail. If loading cost is 35 TL, unloading cost is 60 TL, Cost for truck (Ct) is 1100 TL, cost for rail (Cr) is 800 TL, total distance is 560 Km, and the carried amount is 1 container. If there is pre-transportation with 10 Km and 50 TL cost, find the optimal distance for rail to select intermodal transportation.
Select one:
a. 557
b. 503
c. 417
d. 529
2) Transport focus is with ..............
Select one:
a. none of them
b. location and transport strategy
c. location and inventory stragegy
d. inventory and location strategy
There are five machines located at the points (0, 0), (2, 0), (0, 2), (2, 3) and (4,3) respectively. A repair shop is planned in the facility. The foreman claims that for any number of expected repair trips between these machines and the repair shop, the optimal location of the new facility can never be at the location (2,1).
State whether this claim is true or false.
Answer 3-20 plus the following question: If 100 commercial locations are to be serviced twice a week, and there are 5 workdays per week, how many trucks are needed?
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- During a 40-hour workweek, a technician spends 15% of the time driving toand from various jobs. How many hours are spent driving?arrow_forwardThe following are the data of a simple summit mass haul diagram STATION MASS ORDINATE (m3) 0+000 -80 0+500 -130 Mass ordinate at initial point of the limit of free haul distance = +600 Mass ordinate at initial point of the economical haul distance = +200 Limit of Economic Haul = 450m Cost of Haul = P120.00 per cubic meter per meter station a. Determine the volume of borrow and its overhaul volume. b. Determine the length of overhaul if the cost of hauling is 00arrow_forwardThe total cycle time for a scraper in a construction project along Ayala Boulevard is 20 mins. If the a 2.1km of the area will be scraped, and the speed of a single push load scraper is 0.08 mph, assuming a standard dump time, a. calculate the load time in seconds b. how many scrapers are required if the scraper's pusher has a cycle time of 2 mins. Write your solutions. Use engineering lettering. need answer please in engineering letteringarrow_forward
- During morning peak hour, the passenger demand is 600. Assume that passenger demand is evenly distributed within that period and the average load/occupancy is 50 passengers per bus. Calculate the average headway of a city buses? If the passenger demand increases to be 750, calculate the number of bus units need to be added and the headway shorten?arrow_forwardQuestion: a. Compute the overhaul volume. b. Compute the length of overhaul if total cost of hauling is P105,750.00 c. Compute the total cost of borrow.arrow_forwardEstimate the hourly production of a 4 CY wheel loader moving sand and gravel a distance of 150 feet up a 5% grade. The surface of the haul is loose sand and gravel. The job efficiency is 45 minutes per hour.arrow_forward
- given the following data of cut and fill, compute the free haul distance, overhaul distance, waste and borrow volume. having the values of: Cost of overhaul: 3000 ID/station Cost of free haul: 5000 ID/cu.m Cost of borrow: 15000 ID/cu.m Free haul distance (F.H.D.): 300m = 2 stations Cost of waste=5000 ID/cu.m economic overhaul distance=5 stations limit of economic haul=8 stationsarrow_forwardDescribe what is least cost method (LCM) steps of LCM in transportation?arrow_forwardA large manufacturer uses two factors to decide whether to use truck or rail for movement of itsproducts to market: cost and total travel time. The manufacturer uses a utility formula that rateseach mode. The formula is U = 5C + 10T, where C is cost ($/ton) and T is time (hours). For agiven shipment of goods, a trucking firm can deliver in 16 hours and charges $25/ton, whereas arailroad charges $17/ton and can deliver in 25 hours. a. Which mode should the shipper select? b. What other factors should the shipper take into account in making a decision?arrow_forward
- Please discuss and provide examples of Multi-modal and Intermodal transportation . Please identify the documents used in the various modes of documents. Why are dry ports used?arrow_forwardWith reference to mass haul diagram, explain what is meant by the following terms:-Free haul distance-Overhaul distance-Haul-Waste-Borrowarrow_forwardDiscuss the five modes of transport by comparing each of the following: operational overview, typical strengths and limitations, freight characteristics, and the vehicle types found in each mode.arrow_forward
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