Forestry Control Tower

Forestry Control Tower

Construction	20
Workers	None
Electricity	None
Maintenance	None
Footprint	4x4
Required Research	Tree Planting
Designation	Buildings (For Vehicles)

The Forestry Control Tower is a building to fully automated producing of Woods. Successful forestry setup consists of four parts:

• designation of a control area
• creation of Forestry Designations within that control area
• assignment of Tree Planters and Tree Harvesters to the Tower

  *Do not forget to assign pickups to each Tree Harvester.

• supply of Tree Saplings

Then, the Planter will plant Tree Saplings and the Harvesters will cut grown trees.

Forestry Designations is assigned to the Tower unlike Mining Designation, and the Designation will be deleted when the Tower is deconstructed.

Harvesting options

The Forestry Control Tower has a "Harvesting Options," that decides the size the trees should be cut. 100% is a standard option, and it maximizes the number of the harvested Wood from each tree sapling. 60% can minimize the area for tree growing, but a +67% more Tree Saplings are required than 100%.

Harvesting Options

Option	Harvested Wood per each tree	Harvest from planting	Average wood / year / tree
100%	20	12.0 years	1.66
80%	16	9.0 years	1.77
60%	12	6.3 years	1.9
40%	8	5.7 years	1.4

Control area, Vehicle assignments, and Idle vehicles

See Mine Control Tower.

Throughput of Wood harvesting

Tree Planter plants one Tree Saplings per about 45 cells on average. If Harvesting Options is 100%, it takes 12 years (8640 ) to grow them and one grown tree will be 20 Woods. So, for example, the area for harvesting 1 / 60 of Woods is:

45 / (20 × 60 / 8640) = 324 cells (20.2 Forestry Designated tiles)

In other options, the throughput is shown in the following table:

Required area and Tree Saplings to harvest 1 / 60 of Wood (version 0.5.3)

Option	Tree Saplings ( / 60 )	Area
		in cells	in designated tiles
100%	0.0500	324	20.2
80%	0.0625	304	19.0
60%	0.0833	284	17.8
40%	0.1250	385	24.1

Forestry Size Calculation

Using these results the saplings needed (and hence forestry size) per assembler can be calculated, depending on your choice of assembler and harvesting option.

First, using the math above the wood generated per sapling per month ( / 60 ) can be computed.

Option	Years	Wood	Wood/sapling/year	Wood/sapling / 60
100%	12	20	1.67	0.139
80%	9	16	1.78	0.148
60%	6.3	12	1.90	0.159
40%	5.7	8	1.40	0.117

Second, assemblers making construction parts take:

Assembler	Wood/assembler / 60
Mk1	4.5
Mk2	9
Mk3	18
Robotic	36

From above each sapling takes 45 "tiles" or 2.81 "designations" (where each designation is 4x4 tiles). Putting these together, the designations (i.e. forestry size) per assembler can be calculated as follows:

Cut option:		100%	80%	60%	40%
Wood/sapling / 60 :		0.139	0.148	0.159	0.117
Assembler Mk1	4.5	91	85	80	108
Mk2	9	182	171	159	216
Mk3	18	365	342	319	433
Robotic	36	729	683	638	866

For example, using the 80% harvesting option and Mk2 assemblers: 9 wood/assembler / 0.148 wood/sapling × (45 tiles/sapling / 16 tiles/designation) = 171 designations/assembler

Therefore, 3 Assembler Mk2 require 171 designations each or a total of 512, which is a square roughly 23 by 23 (under the 80% cut option).