[2021] Demolishing mechanics

First, 208E 384N of what map? Navezgane? One of the pregen maps? A RWG map?

Second, Structural integrity in 7DTD is, at it's core, A function of Available Support vs Current Weight. If Weight ever exceeds Available Support, a collapse is initiated, and the conditions surrounding it can lead to it propagating, or only collapsing a few blocks; all depends on what collapses, where the collapsing blocks land, etc.

EG: A concrete block has a weight of 10, and a support of 120; So it can support 12 blocks of concrete from the measured point.

Every placable object and block in the game has a weight value. Zombies, players, and vehicles also have weight.

So you had a tower, You built it up, You filled it with more and more and more weight via upgrades and objects like the forge, work bench, probably farm plots, chests, storage crates and other blocks....and you broke the camels back with the addition of the chem station.


Now an important point here is that if you were doing any digging underneath your tower, to make an underground room, or just mining in general for stone, etc, You will have compromised the stability of your tower. STructural support is infinite when measured in an unbroken line from bedrock- However any empty space along the way will cause it to begin calculating and detract from the available support higher up.

Without seeing your exact setup prior to the chem station, It'd be hard to tell you where you went wrong or if it was a bug...But it's almost certainly due to improperly accounting for the weight of the things you were adding/building/upgrading and/or a mine you made under your base.

Edit: Here is a very helpful but long video explaining the mechanic in depth. Some of the Weight/support values given in the video are slightly out of date; but the overall function of the mechanics has not changed much/at all since the video was made. So just check the support/weight of anything you build with before building.
https://www.youtube.com/watch?v=7hq_HxCqgyU

Originally posted by Lord-Knight Fandragon: But heres what makes no sense on SI. That silo out back of the barn at Grace's place?

Yeah, I went to collapes that and it didnt comedown until I had completely taken out the entire bottom row of supports. Same with the barn itself. Guy I was playing with and myself spent a whole in game night and into the next morning taking that barn down.....we had to completely take down every single 1st layer brick before it came down....

Pre-existing POI's are a bit special; They have a flag to ignore stability updates to a greater or lesser extent so that buildings that could not otherwise exist are able to be created and loaded into a world. Typically this means you must remove every block connecting to ground in order to cause a cascading effect to collapse everything.

Some POI's also have a special block type hidden within them iirc that functionally does not respond to SI requests, instead acting as if it were bedrock and supporting everything connected to it.

TL;DR: POI designers use some dev tricks to make POI's work in the game world despite the SI mechanics.

Originally posted by vgifford:

Originally posted by Shurenai: Some POI's also have a special block type hidden within them iirc that functionally does not respond to SI requests, instead acting as if it were bedrock and supporting everything connected to it.

To be exact, which block is that?

I'm afraid I don't know exactly what block it is. I just know I and others have experienced POI's floating even after every connection to ground has been severed. It's either a specific block, Or a hard limit on the total amount of blocks that can collapse at one time which if exceeded will simply not collapse.. Maybe some other possibility i'm not thinking of. Personally banking on the specific block though as I vaguely recall mention of it at one point.