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Tobruk

A guide to bridges and how they help you achieve efficiency and flow

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Tobruk    302

INTRODUCTION

First things first, since this section is mostly dedicated to those, who are barely beginning their adventure with ONI - Liquid and gas in pipes flow from the green arrow to the white arrow.

In this example, liquids will flow from the left to the right.

2124364.jpeg

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You can cleverly use the fact that pipes don't differentiate between pumps/consumers and bridges. To them, it's one and the same, since all of them use identical white/green arrows. This makes possible to run liquid/gas in circles without any power once you get the material into pipes.

https://gfycat.com/ifr/AdorableEvergreenBluewhale 

 

For very simple pipes (just like the ones above) that go from just one pump (green) to one consumer (white) and are relatively short, you can just connect the two and be done with it.

It is advisable, though, to always include a few bridges along the way, if the pipe is supposed to be long, as in the picture. This way you won't need to do any cumbersome adjustments when crossing multiple lines with one pipe.

2124363.jpeg

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Bridges may seem counterintuinitive, as they teleport packets from white to green.

Some people prefer to deal with such a situation by making a one-tile gap between each pipe and then crossing them using multiple bridges, but it looks ugly and takes up more space.

2124354.jpeg

It's much better to do it like this, which looks way more neat:

2124355.jpeg

There is nothing difficult here to explain. Look at it as just an extended version of the second picture (times three :D), with a vertical pipe going underneath the main pipelines.

INTERSECTIONS

Intersections split the flow into two halves, as shown below:

2124366.jpeg

 

FLOW PRIORITY

MAIN PIPE v. AUXILIARY PIPE

Suppose you have a main pipe that feeds a sieve with polluted water from the showers, but also another pipe with polluted water from a geyser. Suppose further that you want the main pipe from showers to have priority when it comes to feeding the sieve. You can achieve that using bridges:

2124356.jpeg'

In this example, unless there is no flow from the main pipe (or the packets that go through the main line are less than full), auxiliary line will push their liquid into the main line and support it, achieving constant flow.

Another example showing how you can make a certain pipe wait its turn.

2124371.jpeg

SPLITTING FLOW

When splitting a single pipe with bridges into two pipes, you have to decide, how you want the piping to behave. There are two options:

  • Move stuff ONLY through route 1, unless route 1 is backed up, then ALL go throug route 2.
    NOTE: The bridge below is there only to guide the packets in the right direction. Such an application of bridges is a common one, so don't be afraid to use them like this.
    2124373.jpeg
     
  • Move stuff EQUALLY through route 1 and route 2. Flow is split in half.
    REMEMBER: the split has to happen AT the green arrow, not after, not before, or else it won't work.
    2124374.jpeg

 

MULTIPLE CONSUMERS ON A SINGLE PIPE WITHOUT BRANCHING

Connecting consumers like this can have its application, but generally should be avoided (the three vents to the right will not be used).
2124368.jpeg
 

MULTIPLE PUMPS ON A SINGLE PIPE

This is not a desirable situation, as just one pump is enough to saturate the pipe. It could work with buildings that produce material in lesser quantities, so that they can support each other.

2124382.jpeg

However, you don't need to create four vents to service these four pumps! One is enough.

2124383.jpeg

GAPS BETWEEN PACKETS

  • Splitting pipes into two lines creates a gap between packets if packet in the side branch is not full (happens all the time with almost all consumers). The problem occurs because the pockets in the main line have to stop, resupply the packet on the side branch (with like 10 g or sth) and only then move further.
    2124370.jpeg

    To avoid it, make the split at the green arrow of a bridge. Bridges teleport packets, so stopping does not occur in this example.
    2124367.jpeg
     

BUS BRANCHING

Buses is a line of multiple pipes going in the same direction transporting vital resources like oxygen or water. You want to branch out of the bus at certain places to deliver these resources, but having multiple pipes makes this a difficult task.

If you want to branch out with only one pipe:

NOTE: Refer to section SPLITTING FLOW to decide whether it's better for you to branch from the green arrow or the white arrow. Here I'm branching from the green for equal distribution.

2124376.jpeg

If you want to consolidate multiple pipes (for example you have 3 pipes with oxygen and don't want to strain just one):

  1. Branch out with the first pipe (shown above)
  2. Branch out with the second pipe (AS MAIN PIPE - see relevant section)
    2124378.jpeg
     
  3. OR: Branch out with the second pipe (AS EQUAL DISTRIBUTION - see relevant section)
    2124379.jpeg
     
  4. Branch out with the third pipe (again, choose whether it's auxilary or main)
    2124380.jpeg

 

PUTTING THINGS INTO PRACTICE

20W PIPE-SENSOR FILTER

Filters based on pipe sensors need constant flow of liquid/gas in order to work effectively and filter out what you want.

Let's again use the fact that materials can move in circles in pipes ad infinitum to achieve that constant flow.

  • The "staircase" in the middle is where your liquid will circle around forever, unless picked up by the sensor. (see INTRODUCTION)
  • Sensors lie on each of the stairs, waiting for a proper packet to arrive and they filter it out into the branching pipes on the right (see MULTIPLE CONSUMERS ON THE SAME NON-BRANCHING PIPE)
  • The very first bridge on the left is there to prevent newly pumped liquid (see AUXILARY PIPE) to pass into the filtering circle before the old liquid circles around and has not yet been picked up.

2124381.jpeg


Hope I helped someone with this guide.

I intend on expanding upon this when I have time :)

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psusi    135
1 hour ago, Tobruk said:

This is not a desirable situation, as just one pump is enough to saturate the pipe. It could work with buildings that produce material in lesser quantities, so that they can support each other.

True for liquid, but not gas.

 

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Nitroturtle    618

Excellent post breaking down one of the stranger mechanics in the game.  Wish I had something like this available months ago when I started playing, as this is something I struggled with initially (and still do sometimes).  I wish they made it a little more intuitive, but at least it offers considerable flexibility once you understand the mechanics.

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Soulwind    259

Your section on intersections is technically true,  but is a bit misleading for new players. 

Intersections alternate in use, so yes the effective flow rate is halved by each intersection in the entire pipe, but individual packets are not spilt. Nor is it sequential as your example makes it appear. I.e. having 3 intersections isn't 1/2 flow. 1/4 flow, 1/8 flow.  It is 1/8 effective flow overall.

Clear to us, but can be confusing to newbies.

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psusi    135
1 hour ago, Soulwind said:

Nor is it sequential as your example makes it appear. I.e. having 3 intersections isn't 1/2 flow. 1/4 flow, 1/8 flow.  It is 1/8 effective flow overall.

Umm.. what?  You get half going each way at each split.  Half of half is 1/4.

 

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heckubis    138

no its whole packets that change directions it dosnt split the package 1000 grams a packet will still  be 1000 grams when it goes on a different path. if you want a path split with less then the feeding packets volume you need valves. valves are unspoken of for some odd reason sure bridges can be built over but provide no direct control over the flow.

splitting packets with valves does not alter the flow rate just flow volume no missing packets no gaps in flow just what you wanted and how much of it

going from a valve to a radiator for cooling then bridged back on after the valve will keep water constant, mix temps and still not block flow rates.

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Mariilyn    288

It would be a good idea to tackle efficient exosuit dock piping, as many players probably struggle with this. 

For a long time, I used a tree-like configuration for the exosuit docks and they were clearly not refilled fast enough. They were staying half-empty while the room receiving the surplus oxygen (which doubles as a puft farm) was reaching 20 kg per tile and constantly interrupted the oxygen production. I eventually reorganised all my piping, and everything works much more smoothly.

 

Here is my favorite configuration for the exosuit docks :

 5b8575612d101_Capturedecran2018-08-28a11_55_21.thumb.png.d3d995332e109c9dfcee1d6a911207a1.png

Exosuits can be refilled 3 at a time and the flow of oxygen is not slowed down because of branch splitting.

 

And here is one example of bus branching for the main oxygen supply line of a large base, featuring a vertical pipe crossing : 

bus-branching-oxygen.thumb.jpg.ec3bccd75a14d889643798d0a72cc9b5.jpg

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Albryant    78
24 minutes ago, Mariilyn said:

Exosuits can be refilled 3 at a time and the flow of oxygen is not slowed down because of branch splitting.

You can do 4 at a time.  I think there was a post by @Lifegrow a few months back showing this technique with exosuit docks.

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beowulf2010    537
47 minutes ago, Albryant said:

You can do 4 at a time.  I think there was a post by @Lifegrow a few months back showing this technique with exosuit docks.

Yep. The fourth pipe goes back under the bridge before going out to the side. I almost always use exosuit docks in 8s so this is perfect for me. 

1 bridge to split to the 2 bridges feeding the 4 trees. 

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Lifegrow    1,559
6 hours ago, Albryant said:

You can do 4 at a time.  I think there was a post by @Lifegrow a few months back showing this technique with exosuit docks.

Think the original thread was started by Kasuha, but the ideas been floating around reddit/here for a while.

Heres an artists rendering (commissioned due to not wanting to load up ONI)

Spoiler

exosuit.thumb.png.246eac290ac82fe2eb65f3a1edc76f45.png

 

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