'''Note:''' You must have at least 1 [[stone brick]] in your inventory.
=== Skill Required ===
To calculate the [[maximum slope]] you can build on, based on your [[masonry]] skill, use the following formula (submitted by ketza):
''Max slope = (3 *'' √''skill) + 10''
'''Note:''' The answer is rounded ''down''.
{| border="1"
!Skill !! Maximum Slope !! !!Skill !!Maximum Slope !! !!Skill !!Maximum Slope
|-
|1 || 13|| || 16 || 22 || || 49 || 31
|-
|2 || 14|| || 19 || 23 || || 54 || 32
|-
|3 || 15|| || 22 || 24 || || 59 || 33
|-
|4 || 16|| || 25 || 25 || || 64 || 34
|-
|6 || 17|| || 29 || 26 || || 70 || 35
|-
|8 || 18|| || 33 || 27 || || 76 || 36
|-
|9 || 19|| || 36 || 28 || || 81 || 37
|-
|12 || 20|| || 41 || 29 || || 88 || 38
|-
|14 || 21|| || 45 || 30 || || 94 || 39
|}
=== Tools required ===