How many linear feet of control joint must be saw cut in the floor slab?

How many linear feet of control joint must be saw cut in the floor slab?

• A. 45 Feet
• B. 55 Feet 10 Inches
• C. 60 Feet
• D. 70 Feet

Answer: (B)

Control joints are cut into a floor slab to create predictable crack lines and prevent random cracking from shrinkage and temperature changes. The total linear feet of control joints you must saw-cut depends on how you subdivide the slab into smaller panels using a standard spacing. In practice, you determine the panel size allowed or recommended for the project, lay out joints across the slab so each panel stays within that size, then add up the lengths of all the joints you must cut. The sum of those joint lengths gives the total linear feet of control joints required. In this problem, applying the required panel size and layout to the given slab dimensions yields a total joint length of 55 feet 10 inches. That specific total comes from the particular floor plan and spacing used in the scenario. The other numerical options would imply different panel sizes or missed joints, which would not meet the specified spacing.

Control joints are cut into a floor slab to create predictable crack lines and prevent random cracking from shrinkage and temperature changes. The total linear feet of control joints you must saw-cut depends on how you subdivide the slab into smaller panels using a standard spacing. In practice, you determine the panel size allowed or recommended for the project, lay out joints across the slab so each panel stays within that size, then add up the lengths of all the joints you must cut. The sum of those joint lengths gives the total linear feet of control joints required.

In this problem, applying the required panel size and layout to the given slab dimensions yields a total joint length of 55 feet 10 inches. That specific total comes from the particular floor plan and spacing used in the scenario. The other numerical options would imply different panel sizes or missed joints, which would not meet the specified spacing.