Structure
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Colonists can build structures of a various materials, each with different beauty, flammability and hit-points. Enclosed areas will automatically prompt colonists to build a roof unless you apply a no roof region, or if the structure is too large (over 400 cells). Structures leave ash on the ground when burnt.
Autodoors
Autodoors have powered operation to allow people to move through it without slowing down (with the exception of stone doors). They require a constant 50W charge to operate. A powered autodoor opens four times as quickly. An unpowered one acts just like a standard door. Autodoors have the same max hit points of a standard door of the same material. A powered door requires at least ~57.69% base speed to not slow colonists down, while unpowered doors require 4x that speed (which excludes all unpowered doors). Like standard doors, autodoors divide rooms for the purpose of bedrooms and ratings. Autodoors require 40 steel, 25 materials and 2 components to construct.
| Material | HP | Cost | Steel Cost | Work Required | Flammability | Opening Speed | Value [1] |
|---|---|---|---|---|---|---|---|
| Gold | 150 | 400 | 35 | 24 | 20% | 100% | $7630.00 |
| Granite Blocks | 425 | 40 | 35 | 93 | 0% | 45% | $167.20 |
| Limestone Blocks | 390 | 40 | 35 | 93 | 0% | 45% | $159.20 |
| Marble Blocks | 300 | 40 | 35 | 93 | 0% | 45% | $159.20 |
| Plasteel | 700 | 40 | 35 | 18 | 10% | 100% | $1,163.20 |
| Sandstone Blocks | 350 | 40 | 35 | 93 | 0% | 45% | $159.20 |
| Silver | 175 | 400 | 35 | 18 | 20% | 100% | $883.20 |
| Steel | 250 | 75 | - | 18 | 20% | 100% | $163.20 |
| Slate Blocks | 325 | 40 | 35 | 93 | 0% | 45% | $159.20 |
| Uranium | 625 | 400 | 35 | 64 | 0% | 90% | $3,130.00 |
| Jade | 125 | 40 | 35 | 64 | 0% | 90% | $2,645.00 |
| Wood Logs | 100 | 40 | 35 | 13 | 100% | 120% | $139.20 |
- ↑ Not sellable.
Doors
Doors provide entry points through walls for colonists while still keeping out enemies and wild animals. Pawns manually open doors which causes a delay as they try to pass through, as opposed to auto-doors which open on demand and allow faster passage. A door can be locked by marking it forbidden. Colonists can't use locked doors, however visitors, animals and colonists on mental breaks can pass through doors, even if locked. A door can be marked to 'Hold open' so that the next time it's opened it will stay open.
| Material | HP | Cost | Work Required | Flammability | Opening Speed | Value [1] |
|---|---|---|---|---|---|---|
| Gold | 150 | 250 | 19 | 20% | 100% | $7505.00 |
| Granite Blocks | 425 | 25 | 74 | 0% | 45% | $62.70 |
| Limestone Blocks | 390 | 25 | 74 | 0% | 45% | $57.70 |
| Marble Blocks | 300 | 25 | 74 | 0% | 45% | $57.70 |
| Plasteel | 700 | 25 | 14 | 10% | 100% | $685.20 |
| Sandstone Blocks | 350 | 25 | 74 | 0% | 45% | $57.70 |
| Silver | 175 | 250 | 14 | 20% | 100% | $510.20 |
| Steel | 250 | 25 | 14 | 20% | 100% | $60.20 |
| Slate Blocks | 325 | 25 | 74 | 0% | 45% | $57.70 |
| Uranium | 625 | 250 | 50 | 0% | 90% | $2,510.20 |
| Jade | 125 | 25 | 50 | 0% | 90% | $2,515.00 |
| Wood Logs | 100 | 25 | 10 | 100% | 120% | $45.20 |
- ↑ Not sellable.
Roof
The current game version allows a roof extension of up to 6 cells from a wall, so interiors have a maximum size of 12 cells on the shortest side. Rooms built larger than this will remain unroofed (colonist buildings) or result in a roof collapse (mined rooms, or when demolishing pillars). Larger rooms can be built with the use of single-wall pillars.
Roof deconstruction
This involves drawing a No Roof Zone over the area you wish to have roofs get rid of. Constructors will automatically go and safely remove the roofs without risk of collapse.
Overhead Mountains cannot be removed this way.
Roof collapse
This is dangerous as any collapse can cause injuries on colonists. If it's an Overhead Mountain collapsing, colonists will be buried alive. Casualties will cause negative thoughts.
Walls
An impassable wall, capable of holding up a roof if the space between supporting walls and beams is not too far away.
Walls can be built out of any material and Power conduits may be constructed on an existing wall. Walls require 5 materials to construct.
| Material | HP | Cost | Work Required | Flammability | Value [1] |
|---|---|---|---|---|---|
| Gold | 210 | 50 | 4 | 20% | $1500.00 |
| Granite Blocks | 595 | 5 | 22 | 0% | $15.72 |
| Limestone Blocks | 540 | 5 | 22 | 0% | $14.72 |
| Marble Blocks | 420 | 5 | 22 | 0% | $14.72 |
| Plasteel | 980 | 5 | 5 | 10% | $136.20 |
| Sandstone Blocks | 490 | 5 | 22 | 0% | $14.72 |
| Silver | 245 | 50 | 3 | 20% | $100.72 |
| Slate Blocks | 455 | 5 | 22 | 0% | $14.72 |
| Steel | 350 | 5 | 3 | 20% | $10.60 |
| Uranium | 875 | 50 | 5 | 0% | $500.00 |
| Jade | 125 | 5 | 5 | 0% | $505.00 |
| Wood Logs | 140 | 5 | 2 | 100% | $7.42 |
- ↑ Not sellable.