Concrete Reinforcement
With plenty of 
Unshaped Concrete Blocks to spare, perhaps it is a good idea to pile some of them up into an extra layer of defence.
Concrete Reinforcement  |
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| By using the concrete blocks you found to reinforce your plywood, it may finally be used for something. | |
| Category | Buildings |
| Sub Category | Wall Upgrade v1 buildings |
| Unlocked by |  Plywood |
| Blueprint |   uncommon |
| Defence | 80  |
| Action Points cost | 40  |
| Resource cost |  ×10 ×5  ×5 |
 Bétonnade |
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 Betonschicht |
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 Capa de hormigón |
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UseEdit
- Building it gives 80 to the town.
NotesEdit
- In Season 3:
Concrete Reinforcement was added.
- In Season 6:
- Blueprint rarity decreased from
Construction Blueprint (rare) to 
Construction Blueprint (common) - Parent building changed from
Wall Upgrade v2 to 
Metal Patches.
- Blueprint rarity decreased from
- In Season 16:
- Blueprint rarity increased from Construction Blueprint (common) to Construction Blueprint (uncommon)
- Parent building changed from Metal Patches to Plywood.
- Resource cost changed from ×2 ×6 to ×10 ×5 ×5.
- decreased from 60 to 40.
- Defense Points increased from 50 to 80 .
- Blueprint rarity increased from
