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 300 cells). Structures leave ash on the ground when burnt.

Walls

Walls are impassable structures capable of supporting a roof. Walls can be built out of any building material. Power conduits may be constructed in an existing wall. Smoothing natural stone walls allows conduits to be placed beneath them. Walls require 5 materials to construct.

Material HP Cost Work Required Flammability Beauty Value [1]
Plasteel 840 5 5 20% 0 $46.07
Silver 210 50 3 40% 6 $50.49
Steel 300 5 3 40% 0 $9.99
Uranium 750 5 5 0% 0 $30.92
Jade 150 5 12 0% 10 $27.43
Wood 195 5 2 100% 0 $6.34
Gold 180 50 3 40% 20 $500.00
Granite blocks 510 5 16 0% 0 $7.92
Limestone blocks 465 5 16 0% 0 $7.92
Marble blocks 360 5 15 0% 1 $7.67
Sandstone blocks 420 5 14 0% 0 $7.43
Slate blocks 390 5 16 0% 0 $7.92
  1. Not salable.

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 autodoors which open on demand and allow faster passage. All doors are generally locked to hostile entities, including prisoners, raiders and mad animals. A door can be marked to "Hold open," which means the next time it is opened, it will stay open, and then all pawns can pass through. A door can also be marked "Forbid". Colonists and tamed animals don't use forbidden doors, even if they're held open. However visitors, traders, and colonists on mental breaks ignore the forbidden status.

Material HP Cost Work Required Flammability Opening Speed Value [1]
Gold 96 250 13 20% 100% $2,505.00
Granite Blocks 270 25 88 0% 45% $41.36
Limestone Blocks 250 25 88 0% 45% $41.36
Marble Blocks 192 25 81 0% 45% $39.83
Plasteel 450 25 32 10% 100% $230.00
Sandstone Blocks 225 25 74 0% 45% $38.30
Silver 112 250 15 20% 100% $255.00
Steel 160 25 15 20% 100% $50.56
Slate Blocks 210 25 88 0% 45% $41.36
Uranium 400 25 27 0% 90% $155.81
Jade 80 25 71 0% 100% $140.3
Wood Logs 104 25 10 100% 120% $32.14
  1. Not sellable.

Bridge

Bridges are structures that can be built on water. Bridges allow more rapid movement across water. Once built, they can support most structures, including walls, but not particularly heavy structures. Bridges allow for easier building in swampy biomes. Floors may not be built atop bridges.

Bridges cost 12 wood each. They can be destroyed by fire or explosions, including whatever was built on top.

Autodoors

Autodoors are regular doors that open and close 4x as fast, but need to constantly draw 50 W of power. Lacking sufficient power, they lose the speed bonus and act like regular doors, until power is returned.

Powered autodoors made of stone open slightly faster than regular wooden doors. Powered autodoors made of any material other than stone open fast enough that pawns are not slowed down when passing through.

In all other aspects, an autodoor is identical to a regular door made of the same material.

Construction requires 30% additional work, 40 steel and 2 components on top of the 25 base material for the regular door.

For more information, see the main article Autodoor.

Material HP Cost Steel Cost Work Required Flammability Opening Speed Value [1]
Gold 96 250 40 17 20% 100% $2,645.00
Granite Blocks 270 25 40 113 0% 45% $186.76
Limestone Blocks 250 25 40 113 0% 45% $186.76
Marble Blocks 192 25 40 104 0% 45% $184.78
Plasteel 450 25 40 32 10% 100% $230.00
Sandstone Blocks 225 25 40 94 0% 45% $182.80
Silver 112 250 40 19 20% 100% $395.00
Steel 160 65 - 19 20% 100% $191.46
Slate Blocks 210 25 40 93[2] 0% 45% $159.20[2]
Uranium 400 25 40 64[2] 0% 90% $3,130.00[2]
Jade 80 25 40 64[2] 0% 90% $2,645.00[2]
Wood Logs 104 25 40 13 100% 120% $139.20
  1. Not sellable.
2 Not updated to actual Version 1.0 values

Column

Columns are passable structures which are capable of holding a roof which do not block sight, or movement and look quite nice. They have x/1.875 of a wall's normal health, 4x the beauty, and 4x the value. They also have 25% cover effectiveness and do not slow down pawns.These were introduced in 1.1.

Material HP Cost Work Required Flammability Beauty Value [1]
Plasteel 450 20 28 0% 4 $180
Silver 112 200 13 40% 15 $200
Steel 300 20 13 40% 4 $38
Uranium 400 20 24 0% 1 $120
Jade 80 20 63 0% 21 $200
Wood 104 20 9 100% 4 $24
Gold 180 50 3 40% 30 $500
Granite blocks 510 5 16 0% 4 $18
Limestone blocks 465 5 16 0% 4 $18
Marble blocks 360 5 15 0% 4 $18
Sandstone blocks 420 5 14 0% 4 $18
Slate blocks 390 5 16 0% 4 $18
  1. Not salable.

Roof

A single wall pillar will support a roof in the area around it.

A roof is an area of cover from the elements. A roof can extend up to 6 cells from a wall, so roofed interiors have a maximum size of 12 cells across the shortest side. Interior areas built larger than this will remain partially unroofed. Larger roofed areas can be built with the use of interior walls as pillars. Indoor roofs are automatically built by Constructors. To build a roof outdoors, a "Build roof area" must first be drawn.

Drawing roof areas

Areas can be designated to have a roof, or not have a roof by drawing either a Build roof area or Remove roof area. This can be used to create outdoor roofed areas (to prevent snowfall or item deterioration), or indoor unroofed areas (protected Solar panels, indoor growing areas). If there is no supporting wall or rock within 6 tiles, no roof will be built.

Roof collapse

A roof will collapse if the last supporting wall or rock is removed, whether by mining, deconstruction, or destruction. Roof collapses cause injuries to colonists and damage items. If it's an Overhead Mountain collapsing, colonists will be buried alive.

Roof deconstruction

Drawing a "Remove roof area" will cause colonists to remove a constructed roof. Constructors will automatically go and safely remove the roofs without risk of collapse. Overhead Mountains cannot be removed this way, only by triggering a collapse.