How close can the string line be to the cinder block wall you are building?

How close can the string line be to the cinder block wall you are building?

• A. 3/16
• B. 1/4
• C. 1/8
• D. 1/16

Answer: (D)

When you’re using a string line to guide a cinder block wall, you want a reference that sits very close to the finished face but doesn’t actually touch the wall. Keeping the line just off the surface prevents it from being smeared into the wall or pulled into the mortar as you lay blocks and trowel joints, while still giving a precise reference for the wall’s alignment. The best choice is a tiny gap of about 1/16 inch. That minimal clearance lets you pull the line tight and rely on it for accuracy, while accommodating minor irregularities in block sizes and mortar joints along the length of the wall. If you were farther away, the line would be less faithful to the actual wall face, making it harder to maintain true alignment and levelness throughout the build.

When you’re using a string line to guide a cinder block wall, you want a reference that sits very close to the finished face but doesn’t actually touch the wall. Keeping the line just off the surface prevents it from being smeared into the wall or pulled into the mortar as you lay blocks and trowel joints, while still giving a precise reference for the wall’s alignment.

The best choice is a tiny gap of about 1/16 inch. That minimal clearance lets you pull the line tight and rely on it for accuracy, while accommodating minor irregularities in block sizes and mortar joints along the length of the wall. If you were farther away, the line would be less faithful to the actual wall face, making it harder to maintain true alignment and levelness throughout the build.