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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

Main article: Wall

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 without the mood penalty if the conduit is not in the wall. Smoothing natural stone walls allows conduits to be placed beneath them. Walls require 5 materials to construct.

Constructed Walls

Material	HP	Cost	Work Required	Flammability	Beauty	Value
Plasteel	840	5	5	0%	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

Natural Walls

These cannot be constructed, only mined, but act largely like walls and are provided for comparisons sake.

Material	HP	Flammability	Beauty	Value
Plasteel Ore	8000	?	?	?
Silver Ore	1500	?	?	?
Steel Ore	1500	?	?	?
Uranium Ore	4000	?	?	?
Jade Ore	1500	?	?	?
Gold Ore	1500	0%	?	?
Compacted machinery	2000	?	?	?
Granite	900	0%	-1	?
Limestone	700	0%	?	?
Marble	450	0%	-1	?
Sandstone	400	0%	?	?
Slate	500	0%	?	?

Smoothed Walls

Rather than being directly constructed like other walls, these walls are created by smoothing existing rock walls.

Material	HP	Work Required	Flammability	Beauty	Value	Cover Effectiveness
Smoothed Granite Wall	900	?	0%	1	20?	75%
Smoothed Limestone Wall	700	?	0%	1	20?	75%
Smoothed Marble Wall	450	?	0%	2	20?	75%
Smoothed Sandstone Wall	400	?	0%	1	20?	75%
Smoothed Slate Wall	500	?	0%	1	20?	75%

Doors

Main article: Door

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 breakdowns ignore the forbidden status.

Material	HP	Cost	Work Required	Flammability	Opening Speed	Value
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	0%	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	104	25	10	100%	120%	$32.14

Bridge

Main article: Bridge

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

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

Autodoors

Main article: Autodoor

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 info, see the main article Autodoor.

Stats table

Autodoor	Beauty	Work to Build	HP	Flamma­bility	Door Speed	Market Value
Material
Bioferrite	0	002,750 ticks (45.83 secs)	320	75%	400%	169
Gold	20	000,990 ticks (16.5 secs)	96	40%	400%	2,645
Granite blocks	0	006,740 ticks (1.87 mins)	272	0%	180%	187
Limestone blocks	0	006,740 ticks (1.87 mins)	248	0%	180%	187
Marble blocks	1	006,190 ticks (1.72 mins)	192	0%	180%	185
Plasteel	0	002,420 ticks (40.33 secs)	448	0%	400%	375
Sandstone blocks	0	005,640 ticks (1.57 mins)	224	0%	180%	183
Silver	6	001,100 ticks (18.33 secs)	112	40%	400%	395
Slate blocks	0	006,740 ticks (1.87 mins)	208	0%	180%	187
Steel	0	001,100 ticks (18.33 secs)	160	40%	400%	192
Jade	10	005,500 ticks (1.53 mins)	80	0%	400%	285
Uranium	0	002,090 ticks (34.83 secs)	400	0%	300%	295
Wood	0	000,770 ticks (12.83 secs)	104	100%	480%	173

Column

Main article: 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.

Stats table

Column	Beauty	Work to Build	HP	Flamma­bility	Market Value
Material
Bioferrite	1	001,875 ticks (31.25 secs)	320	75%	22
Gold	40	000,675 ticks (11.25 secs)	96	40%	2,000
Granite blocks	5	004,640 ticks (1.29 mins)	272	0%	35
Limestone blocks	5	004,640 ticks (1.29 mins)	248	0%	35
Marble blocks	8	004,265 ticks (1.18 mins)	192	0%	33
Plasteel	5	001,650 ticks (27.5 secs)	448	0%	186
Sandstone blocks	5	003,890 ticks (1.08 mins)	224	0%	32
Silver	16	000,750 ticks (12.5 secs)	112	40%	205
Slate blocks	5	004,640 ticks (1.29 mins)	208	0%	35
Steel	5	000,750 ticks (12.5 secs)	160	40%	41
Jade	22	003,750 ticks (1.04 mins)	80	0%	114
Uranium	2	001,425 ticks (23.75 secs)	400	0%	125
Wood	5	000,525 ticks (8.75 secs)	104	100%	26

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 tiles 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 builders. 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 zone" 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.

Version History

• 0.3.410 - The unpowered "Simple Door" added.
• 0.4.460 - Stone wall health raised from 400 to 650.

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Architect

Structure

Animal flap • Autodoor • Bridge • Column • Door • Fence • Fence gate • Wall

Related

Roof