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Route optimization.pptx

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neelam dhok

The document outlines the process for laying out residential solid waste collection routes for an area with 332 residences. Key steps include: 1) Calculating the total compacted waste volume per week based on occupancy rates and waste generation. This was determined to be 40 cubic meters. 2) Determining the minimum number of collection trips needed per week by dividing the total waste volume by the vehicle capacity of 20 cubic meters. This resulted in 2 trips per week. 3) Dividing the total number of residences by the number of weekly trips to calculate an average number of residences served per route, which was 166 residences. 4) Laying out the collection routes on a map using the constraints

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Layout of residential collection routes PROBLEM STATEMENT: Layout collection routes for a residential area has been shown in the figure given below. 2, 6, 12 = number of residences each block
The service area map would be prepared as the first step in the layout of collection routes. Assume that the following conditions apply: 1. General i. Occupants per residence = 3.5 ii. Solid waste collection rate = 1.6 kg/capita.d iii. Collection frequency = once/week iv. Type of collection service = curb v. Collection crew size = one person vi. Collection vehicle capacity = 20 m3 vii. Compacted specific weight of solid waste in collection vehicle = 325 kg/m3 2. Collection route constraints a) No U-turn in streets. b) Collection from each side of the street with stand-up right hand-drive collection.
SOLUTION 1. Development of data needed to establish collection routes a) Determination of total number of residences from which wastes are to be collected Residences = 10 (16) + 4(36) + 1(28) = 332
Volume per week = a) Determination of the compacted volume of solid waste to be collected per week [( Residences occupants per residence solid waste collection rate) 7 d/wk] Compacted specific weight of solid waste in collection vehicle Trip/wk = [(332 residences 3.5 persons/residence 1.6 kg/capita . d) 7 d/wk] = 325 kg/m3 = 40.0 m3 b) Determination of the number of trips required per week Compacted volume of solid waste collected per week = = 2 Collection vehicle capacity per week 40.0 20
Determination of the average number of residences from which wastes are to be collected on each collection trip Residences/trip = 332/2 =166 Layout collection routes by successive trials using the route constraints cited above as a guide. Start route 1 Start route 2 End route 1 End route 2 ADDITIONALCOMMENT: The effectiveness of the collection routes can be assessed by the amount of route overlap shown by the dotted lines.

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Route optimization.pptx

  • 1. Layout of residential collection routes PROBLEM STATEMENT: Layout collection routes for a residential area has been shown in the figure given below. 2, 6, 12 = number of residences each block
  • 2. The service area map would be prepared as the first step in the layout of collection routes. Assume that the following conditions apply: 1. General i. Occupants per residence = 3.5 ii. Solid waste collection rate = 1.6 kg/capita.d iii. Collection frequency = once/week iv. Type of collection service = curb v. Collection crew size = one person vi. Collection vehicle capacity = 20 m3 vii. Compacted specific weight of solid waste in collection vehicle = 325 kg/m3 2. Collection route constraints a) No U-turn in streets. b) Collection from each side of the street with stand-up right hand-drive collection.
  • 3. SOLUTION 1. Development of data needed to establish collection routes a) Determination of total number of residences from which wastes are to be collected Residences = 10 (16) + 4(36) + 1(28) = 332
  • 4. Volume per week = a) Determination of the compacted volume of solid waste to be collected per week [( Residences occupants per residence solid waste collection rate) 7 d/wk] Compacted specific weight of solid waste in collection vehicle Trip/wk = [(332 residences 3.5 persons/residence 1.6 kg/capita . d) 7 d/wk] = 325 kg/m3 = 40.0 m3 b) Determination of the number of trips required per week Compacted volume of solid waste collected per week = = 2 Collection vehicle capacity per week 40.0 20
  • 5. Determination of the average number of residences from which wastes are to be collected on each collection trip Residences/trip = 332/2 =166 Layout collection routes by successive trials using the route constraints cited above as a guide. Start route 1 Start route 2 End route 1 End route 2 ADDITIONALCOMMENT: The effectiveness of the collection routes can be assessed by the amount of route overlap shown by the dotted lines.