Editing Steam Engine (section)

=== Boiler size ===
The tank size is the basic characteristic of a steam boiler. The required dimensions are affected by the heat supplied. For a passive steam engine (level 0) the boiler must be a 2x2 fluid tank of preferably one block height (making it any higher will be a waste of resources). For an active steam engine (level 1 or higher) the boiler must have 4 blocks per heat level. For example, a level 1 boiler must have a tank made of at least 4 fluid tank blocks, a level 9 boiler must be made of at least 36 blocks and a level 18 boiler (maximum achievable) must be at least made of 72 blocks.