It could be purchased from the market for 1 cash. It could also be gifted or claimed from the news feed of a friend.
The Livestock Pen needs 10 steel beams to complete, and for each level, to expand.
On the Lighthouse, cove the demand increases as it expands.
- in a level 1 Lighthouse Cove you need 2 steel beams to make it to level 2.
- At level 2, it needs 5 more to progress to level 3.