Here's a list of the different settings server owners or single players can utilize to change parts of the mod.

The stats shown are default stats if no ini entries are made.

These settings goes in the file GameUserSettings.ini which is typically located in; ShooterGame\Saved\Config\WindowsServer\

or

ShooterGame\Saved\Config\LinuxServer\
or

steam\stamapps\common\ShooterGame\Saved\Config\WindowsNoEditor if you're on singleplayer.

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This is the block of text you can use for setting your own custom health values. I am not sure what the game can read as a valid max value. If you put it to high errors could pop up.
Currently tested with 1,000,000 as known accepable value.
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[AviaryHealth]
ProcessingArea=15000
CraftingWorkBench=15000
PlaSteelFoundationGround=50000
PlaSteelFoundationCanti=30000
PlexiWallTall=40000
PlexiWallHuge=50000
PlexiWallPlugTall=1000
PlaSteelLumberFloorHole=50000
PlexiCeilingFlat=20000
PlexiCeilingDome=40000
PlexiCeilingPlugSolid=5000
PlaSteelCeilingPlugElevator=4000
PlexiSlidingDoorTall=2000
PlaSteelHugeGatePlated=100000
PlaSteelIrisGate=10000
PlaSteelElevatorTrack=5000
PlaSteelElevatorPlatformHuge=20000


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This is the block of text you can use for setting your own custom damage structure class settings. If the value entered is not exactly one of the choices from the range 1-8 it should be showing an error reading ini and then defaulting to option 1.
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These presets are from the core game, and I do not know any thing specific about them.

1 = BrokenByStone
2 = BrokenByStone AllowInst
3 = BrokenByStone DLC1
4 = BrokenByMetal
5 = BrokenByMetal DLC1
6 = BrokenByExplosives WeakMetal
7 = BrokenByExplosives
8 = BrokenByPlasma
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[AviaryDamageMod]
ProcessingArea=4
CraftingWorkBench=4
PlaSteelFoundationGround=4
PlaSteelFoundationCanti=4
PlexiWallTall=4
PlexiWallHuge=4
PlexiWallPlugTall=4
PlaSteelLumberFloorHole=4
PlexiCeilingFlat=4
PlexiCeilingDome=4
PlexiCeilingPlugSolid=4
PlaSteelCeilingPlugElevator=4
PlexiSlidingDoorTall=4
PlaSteelHugeGatePlated=4
PlaSteelIrisGate=4
PlaSteelElevatorTrack=4
PlaSteelElevatorPlatformHuge=4