|+Required skill by length (tiles) and material
|-
!Type/Lengthin tiles!5 tiles
!6
!7
!37
!38
!Skill used
|-
!Wood
|97
|99
|Carpentry
|-
!Rope
|97
|99
|Ropemaking
|-
!Brick
|97
|99
|Masonry
|-
!Marble/Slate/Sandstone
|97
|99
|Masonry
|-
!Arched Brick
|98
|99
|Masonry
|-
!Arched Marble/Slate/Sandstone
|98
|99
|Masonry
|-
|}