iron bars & concrete wall defense

[Tzinopan]

Hi guys,

have a mysterios thing going on.
I build a defense with 5 or 6 high concrete walls and attach iron bars on 2 sides (3&4long)
https://steamcommunity.com/sharedfiles/filedetails/?id=632523197
https://steamcommunity.com/sharedfiles/filedetails/?id=632523231

some of them are now starting falling down.

Any ideas, why this happens ?
An interessting fact is, bars i placed first and after the "falling" one are still there.

cya
F3UR10

[Green777]

They are not supported properly so they will fall down, I use a 7 block high wall and put 1 row of iron bars all round and none fall but once you start making 4 or 5 in a row they will fall down due to no support, test the wall intergity by starting a new game with no zeds and just put a row of blocks up say 1 wall 9 blocks and at each end put them 7 high then slowly join them 1 or 2 from left or right,they will still hold up with no support but once you get 4 or 5 chances are they will fall down .You need to support them e if using 4 or 5 sticking out same with a floor if you put a 2nd floor in your base eg 7 x 7 etc you need pillars under the floor in certain places or same will happen you walk over them and they start falling down As for an outer wall defence putting walls up 5 or more blocks high you only need 1 iron bar on each block so ant zeds that try to crawl up the wall will fall down once they hit the iron bars or whatever you are using

[CatPerson]

Originally posted by Green777:

but once you start making 4 or 5 in a row they will fall down due to no support

Pretty much this.

Most blocks, currently, can't go more than 3-6 with no supporting columns.

Like if you have a 7x7 square of outer concrete wall and fill the 5x5 center with iron bars as the roof, it'll be ok because there are walls all around the bars attach to, but a 20x20 square would not be ok because the center won't have enough support. You'd need some extra inner columns to help all those center iron bar sections up stay "sticky."

There are tricksy ways to outsmart the SI at times (glitches I'd guess) but that would be unreliable and then any future upgrading could break it and make it all fall anyway. :)

[Tzinopan]

thanks for you answers, but i dont understand why the rest isnt falling down.
I tried it in a single player in creative to check whats possible and when blocks are falling down.
Then i built it on our server, segment for segment. and nothing happens.
For example I have a entrance for my zombies with less concrete blocks and its still stable.
https://steamcommunity.com/sharedfiles/filedetails/?id=632743634
https://steamcommunity.com/sharedfiles/filedetails/?id=632743608
Only in this area
https://steamcommunity.com/sharedfiles/filedetails/?id=632743659
my bars are falling down.
So if its a structural integrity problem, all must fall down, and prefered the corners with less wall attached points.
So I dont understand, whats the problem in the "falling down" area.

[DragoKhan]

Are there caves or a mine under your base? That seems to mess up the whole SI.

[krzosu18]

Originally posted by DragoKhan:

Are there caves or a mine under your base? That seems to mess up the whole SI.

yah that would be my guess too -> nearby cave/mine tunnels can screw up things badly as far as SI is concerned

usually when i need smth to stay in place and it collapses i add alyar of wooden poles along side the wall -> this sorta strenghtens si a bit more and makes things stay in the spot -> i usually use this technique on my acces ramps if i want to avoid falloing bits from them when bears come up

[Tzinopan]

that could it be, we have mined sometime under our house. such a sh**. So I need some more pillars or wall segments to stabilize in that area.. damned.

[YamaKami]

Originally posted by DragoKhan:

Are there caves or a mine under your base? That seems to mess up the whole SI.

There are, because that explains the issue completely.

You always want to build off stone for the best results with SI. If you have cavities under your structure though, then you can expect crazy things to happen with the games SI.