Bar Support Marking has what application rate?

• A. 0.06 gal/yd² or 1 gal/1000 ft²
• B. 0.60 gal/yd²
• C. 0.006 gal/yd²
• D. 0.2 gal/yd²

Answer: (A)

The main idea being tested is how much Bar Support Marking material should be applied per unit area to achieve a clear, durable mark without waste. Bar Support Marking is a surface coating used to identify bar supports so they’re visible to inspectors and crews after placement. Specifying the rate per area lets field crews estimate material and coverage consistently, regardless of how many supports there are or how large the area around them is.

The correct rate is 0.06 gal per square yard, which the specification also provides as about 1 gallon per 1000 square feet. This area-based figure is chosen to give a balance: enough coating to make the marks legible and durable on the concrete surface, but not so much that it causes runs, bleed-through, or waste. Applying significantly more would waste material and could lead to issues with curing or appearance; applying much less could result in marks that are faint or incomplete, defeating the purpose of identification.

Rates outside this range tend to be either wasteful or insufficient for visibility, so the stated value best matches the intended performance and practical field use.