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fpgui

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I have a 12k city with 3 landfills. They can process 335 t/month (the total of the theoretical, full capacity of the 3 landfills, one is upgraded with hazardous wastes) whereas the city is generating 385 t/month, garbage processing bar is in orange. Each landfill processing speed is about at half their capacity. I have several questions :
-How can landfills process garbage at full capacity per month yet processing speed is only half of the full capacity ? (eg they don't have enough trucks to cover the city or whatever)
-Despite overall garbage processing capacity being lower than what the city generates, garbage pileup does not seem to be happening. The whole city is in green. I built the 3rd landfill because the bar was in the red, but really it did not seem to have any impact whatsoever ? Or is it long term ?
 
The efficiency of the building matters. Hover your move over it and it tells you some information there. 100% efficiency would be the base line and then if the number is higher than that then they can process faster and vice versa.

Personally, I don't care about any of those processing bars. I take the hint from garbage pilling up around the city that it's time to either, fix traffic jams preventing trucks from reaching their destination, increase efficiency, get more trucks going or add more facilities to deal with it, beyond that, I don't worry one bit over those bars :)
 
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Well they are at 101%... Which is coherent with the monthly garbage processing capcity. I kind of agree with the 'if it's not broken don't fix it' rule, but I since there are numbers available they might as well mean something...
 
Thanks for your time. I've been through this guide (which states a landfill processes 0.6 t per MONTH rather than the 100 t currently. Interestingly 0.6 t per year is about the average citizen waste amount in Europe, so that would be 600 t per month for my 12k city.)
The explanation in this guide for the process speed bar is convoluted, the conclusion is that there are different kinds of waste in the game.

I'm not sure about that. As I watched one of my depot (one without a depot truck upgrade) I watched a DUMP truck (not a GARBAGE truck) filled with waste go from the "unupgraded" landfill to the one with the depot. So I wonder if those dump trucks are not simply sending waste somewhere else to be processed outside your city. Also as I watched my landfills stored waste it was decreasing / increasing by quite a bit.
Meaning possibly :
  • Landfills are not just storing waste, but also exporting some outside the city (for recycling or whatever?) or from one depot to another (why in the latter case?)
  • Processing speed is the amount of waste exported outside city with the respect to the max capacity it can handle, that is to say 100 t/month for a standard landfill

In order to check if I'm right I watched landfill stored waste amount for a month. The stored amount goes up and down, wildly at times (almost halved !), meaning that waste is somehow disposed of and not stored. If I'm correct :
  • I produce 460 t /month garbage,though I can theoretically process max 330 t/month.
  • Process speed is so I can process 185 t/month out of those 330 max and 460 collected.
  • I have to store 460-185 = 275 t/month.
At about the same time one month later I have about 1650 t stored (when the number is stable) starting from 1330 t, 320 t in a month instead of 275. It's a bit more than expected (and pop was smaller when starting the month) but the maths seem to add up.
So if I'm correct, the landfills fill only when they can't process the waste at the process speed they currently display. Otherwise they act as a buffer.