Iracus wrote:On the whole brazier/torchpost subject...whats the best way to space them thorughout a base?
This is covered better in previous posts (just do a search) but nutshell is that more braziers in range of the same target make each brazier less effective, however it still raises the overall total. So basically if you have 3 braziers covering one spot and 10 covering another, it would be way more bang for your buck to add another brazier to the area only covered by 3 because it would increase the overall damage more than if you had added it to the area covered by 10... So try to have each brazier cover as much space as possible and even your coverage, which you would do anyways if you didn't want to provide an attacker with a weak point. Also torchposts and braziers don't affect each other so it's best to have both torchposts and braziers, even though braziers are stronger.
Also worth noting that you need at least 1 tile of buffer between torchposts/braziers and anything which isn't supposed to be a wall (houses, smelters, etc) I think you can put them right up against a wall, however, that would mean you wouldn't be able to repair that section of wall so I like to put my defenses a tile out from the wall.
Lastly, if raiders do manage to break through the wall, it will be easy for them to disable all the defenses if they aren't partitioned in some way from each other... So especially for large bases it's wise to build walls between various sections to make it more costly for them to infiltrate everything, which would hopefully incentivize them to look elsewhere. I tend to hermit with small, compact bases so that's not really an option but makes sense for larger ones esp if a multi-person town.
That's just my understanding which has mostly been gathered from the forums rather than personal experience, so happy to hear any corrections.