Concrete Cover Spacer Estimator

Plan spacer quantities from floor area and adjustable coverage factors.

How to use this tool

Enter your values and calculate a result. Check the units and assumptions before using the estimate.

• Include basement?
• Basement covered area (sq ft)
• Ground floor covered area (sq ft)
• First floor covered area (sq ft)
• Second floor covered area (sq ft)
• Above-ground sq ft per spacer
• Basement sq ft per spacer

Planning factors adapted from the reference: one spacer per 4.5 sq ft above ground and per 2.5 sq ft in the basement. Quantity rounds upward. This is not a specification for concrete cover, spacer strength or placement; use the structural drawings.