* A support beam is required on ''every'' wall of a cave tile (both sides) to prevent the tile from collapsing.
* A [[reinforced wall]] can't be mined.
* Support beams may be removed by mayors of a deed if the reinforced tile is on deed.by mining the tile 40-50 times
* Support beams cannot be removed otherwise, except by collapsing the tile that holds the support beams with a [[shaker orb]].
* Finished support beams '''do not fit''' into a small cart, rowing boat or small sailboat, however a large cart can hold 7 finished support beams.