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Control Joint
Spacing
Calculator
Determine concrete control joint spacing per ACI 302 and ACI 224 recommendations
Input Parameters
Slab Thickness (inches)
Max Aggregate Size (inches)
Slump (inches)
Slab Length (ft)
Slab Width (ft)
Calculate
Results
--
Max Joint Spacing
ft
--
Joints Along Length
--
Joints Along Width
--
Saw Cut Depth
in
Reference
ACI 302: Spacing = Slab thickness × factor (2-3) Saw cut depth = T/4 minimum Cut within 4-12 hours of finishing