Rust Sheet Metal Wall (Sheet Metal Building Tier)
A Sheet Metal wall has 1000 HP and decays in 8 hours without upkeep from a tool cupboard. Breaking one takes 4 C4 or 8 rockets; the cheapest way is 4× Timed Explosive Charge (8,800 sulfur), the same from either side.
Decay & Upkeep
Without a tool cupboard supplying upkeep, a Sheet Metal structure begins to decay and is destroyed after roughly 8 hours. Keep resources in a nearby tool cupboard to pay upkeep and stop decay entirely.
Build Cost & Upkeep
Upgrading a wall or foundation to Sheet Metal costs 200 Metal Fragments. Daily upkeep is a share of that cost set by the size of the base: 10% for the first 15 blocks, 15% for the next 50, 20% for the next 125 and 33.3% for every block after that. The upkeep calculator works it out for a whole base.
Other shapes cost a fraction of that, rounded up. Every block is placed as twig first, which costs wood whatever it is upgraded to.
| Block | Placed as twig | Upgrade to Sheet Metal |
|---|---|---|
| foundation | 50 wood | 200 Metal Fragments |
| triangle foundation | 25 wood | 100 Metal Fragments |
| floor | 25 wood | 100 Metal Fragments |
| triangle floor | 13 wood | 50 Metal Fragments |
| floor frame | 25 wood | 100 Metal Fragments |
| triangle floor frame | 13 wood | 50 Metal Fragments |
| wall | 50 wood | 200 Metal Fragments |
| half wall | 50 wood | 200 Metal Fragments |
| low wall | 25 wood | 100 Metal Fragments |
| doorway | 35 wood | 140 Metal Fragments |
| window | 35 wood | 140 Metal Fragments |
| wall frame | 25 wood | 100 Metal Fragments |
| roof | 25 wood | 100 Metal Fragments |
| triangle roof | 25 wood | 100 Metal Fragments |
| L-shaped stairs | 50 wood | 200 Metal Fragments |
| U-shaped stairs | 50 wood | 200 Metal Fragments |
| spiral stairs | 50 wood | 200 Metal Fragments |
| triangle spiral stairs | 50 wood | 200 Metal Fragments |
| ramp | 25 wood | 100 Metal Fragments |
From our dump of the game's building blocks, build 2634.289.1.
What It Takes to Break a Sheet Metal Wall
| Method | Amount | Sulfur |
|---|---|---|
| Timed Explosive Charge | ×4 | 8,800cheapest |
| Explosive 5.56 Ammo | ×400 | 10,000 |
| Satchel Charge | ×23 | 11,040 |
| Rocket | ×8 | 11,200 |
| Propane Explosive Bomb | ×13 | 11,700 |
| High Velocity Rocket | ×67 | 13,400 |
| Beancan Grenade | ×131 | 15,720 |
| F1 Grenade | ×9,616 | 576,960 |
One wall, cheapest first, and the same from either side: explosives ignore a wall's soft side in the game (it only matters for melee and bullets). Same data as the raid calculator.