[2021] This glitch is still a thing? Seriously?

Honestly, From the description this sounds less like a bug and more like a lack of understanding about the Structural Integrity mechanics. This isn't Minecraft, Things don't float when you remove the things supporting them; They collapse when reaching an integrity breakpoint.

You removed a corner support of your massive heavy reinforced concrete structure without first reinforcing the area around it. Sometimes you can get away with it; But it's not something I personally would ever chance. Do you also have a mine of some sort right under your base area? If not, are you sure someone else didn't tunnel under at some point before you built there, Or after you built there if you hadn't used a land claim?

Screenshots of the base, it's surroundings, and any underground bits would help diagnose if it was in fact a bug or an expected result of removing the support out from under your building that needs support.

Originally posted by NickStash: Is there not a way to post images on here?

There's no 'Attachment' function on the steam forums, but you can link things.

Copy the page url of uploaded screenshots, or go upload them to another site like Imgur.

Ah.. Looking at that, It's the overhang that extends outside the 5x5 Stability is infinite when measured from bedrock- But any open space will begin calculations.

Concrete has a weight of 10, and a horizontal support of 120, meaning it can support up to at most 12 blocks of concrete(Or some combination of other weighted blocks totaling to 120 or less). This measurement begins at the 5x5 area, because the overhang is not supported from beneath. So you have 1, 2, 3, 4, 5, 6, 7, 8, 10 blocks of concrete in one half of the loop on each corner, with the 11th being the 'center' block of each archway.

Then you remove the support from the corner underneath it, and suddenly it's having to stretch several extra blocks for support, beginning the calculation down at ground level now, which pushes it to 13+ total blocks supported, exceeding the support and causing a collapse. Collapse then propagates several times to alleviate the stress (After all, when something collapses, it's not just the one block that exceeds the limit that goes, Even IRL. If you overload something, you overload it and cause much more damage than just the last little bit.)

To then further have the windows filled in, and yeah, you're riding right on the fringes of support, the moment any corner gives way, much of the overhang will collapse as a result, as the first corners collapse means the two archways bridging from it are not properly supported either.


At a glance without going to test it myself in game, This seems like normal behavior to the SI system, Not a bug. By removing the block under the corner, you removed the infinite vertical support and experienced a collapse.

Originally posted by NickStash:

Originally posted by Shurenai: Ah.. Looking at that, It's the overhang that extends outside the 5x5 Stability is infinite when measured from bedrock- But any open space will begin calculations.

Concrete has a weight of 10, and a horizontal support of 120, meaning it can support up to at most 12 blocks of concrete This measurement begins at the 5x5 area, because the overhang is not supported from beneath. So you have 1, 2, 3, 4, 5, 6, 7, 8, 10 blocks of concrete in one half of the loop on each corner, with the 11th being the 'center' block of each archway.

Then you remove the support from the corner underneath it, and suddenly it's having to stretch several extra blocks for support, beginning the calculation down at ground level now, which pushes it to 13+ total blocks supported, exceeding the support and causing a collapse. Collapse then propagates several times to alleviate the stress (After all, when something collapses, it's not just the one block that exceeds the limit that goes, Even IRL. If you overload something, you overload it and cause much more damage than just the last little bit.)

To then further have the windows filled in, and yeah, you're riding right on the fringes of support, the moment any corner gives way, much of the overhang will collapse as a result, as the first corners collapse means the two archways bridging from it are not properly supported either.


At a glance without going to test it myself in game, This seems like normal behavior to the SI system, Not a bug. By removing the block under the corner, you removed the infinite vertical support and experienced a collapse.

I THINK i'm understanding what you're telling me, however, I don't understand how the LAST corner is what causes the stress.

Wouldn't it have broken once any other corner is removed/replaced?

That's not what happened here, I replaced 3 corners with no problem, it's the fourth corner that broke the tower. On top of that, if you'd like I can show you the tower from the multiplayer server, it wasn't just a small amount of damage, the entire structure fell because of that one final corner.

Needless to say, i'm pretty floored about it.

A screenie of the MP server would be helpful- The 5x5 area shouldn't have collapsed much or at all unless there was an open pocket underground (as mentioned before, a mine, or a tunnel, or an underground base, etc)

What all was inside your tower? Did you have chests? Sleeping bag? Ladder? Hatches? A vehicle? Doors? Pretty much any placable object that can exist in world has weight(Even players), and it could very easily be that you had been under-load enough on three corners to get away with it, and right on the line on the fourth which leads to a collapse from removal.