TL;DR
Control-joint spacing is the layout interval between sawed or tooled joints in a slab, governed by the rule of thumb of two to three times the thickness in inches expressed as feet: a 4-inch slab gets joints every 8 to 12 feet. Panels should stay close to square, with length no more than about 1.5 times width, and joints should land at re-entrant corners where cracks love to start.
What it means
Control-joint spacing is the layout interval between sawed or tooled joints in a slab, governed by the rule of thumb of two to three times the thickness in inches expressed as feet: a 4-inch slab gets joints every 8 to 12 feet. Panels should stay close to square, with length no more than about 1.5 times width, and joints should land at re-entrant corners where cracks love to start. A driveway quote that shows a joint plan, or at least states the interval, signals a finisher who intends the cracking to happen on schedule.
Where it sits in the glossary
Control-joint spacing is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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