Waste Collection Exercises

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Problem 3 A community of 1000 homes stores their waste containers along alleys located in back of all of their homes. A satellite vehicle with a 2-yd 3 capacity picks up the waste once per week and delivers it to a mechanically loaded compactor truck that moves along a main artery as the satellite vehicle collects wastes. Calculate the number of trips per week the satellite vehicle makes to the compactor truck and the time per week required to collect all of the waste. How many trips does the compactor make to the disposal site
Data ‣ Number of days/week = 5 ‣ Length of work day = 8 hours ‣ Off route time = 15% of the day ‣ Time to and from garage = 15 min each ‣ Pickup time per location (satellite vehicle) = 0.6 min ‣ Average time to drive to and from compactor = 5 min ‣ Compactor volume = 30 yd 3 ‣ Compaction ratio = 3 ‣ <strong>Waste</strong> generation is 0.2 yd 3 /location
Page 1 and 2: Waste Collection Exercises
Page 3 and 4: Data ‣ Total collection time (Y):
Page 5 and 6: Step 1: Solve for c, number of trip
Page 7 and 8: Step 1: Cont’d 480 = 30 + 14c - 4
Page 9 and 10: Step 2: Calculate the number of con
Page 11 and 12: Data ‣ Total number of locations
Page 13 and 14: Step 1: Calculate N using time per
Page 15 and 16: Step 2: Solve for N Y = a + b + c(d
Page 17: Step 3: Calculate minimum truck vol
Page 21 and 22: Step 1: Calculate the number of sat
Page 23 and 24: Step2: Calculate the time per week
Page 25 and 26: Step 3: Calculate the number of com
Page 27 and 28: Practice Problem 1: Data ‣ Number
Page 29 and 30: Practice Problem 2: Data ‣ Length
Page 31 and 32: Variable Commingled Source Separate

Waste Collection Exercises

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