Michigan Residential Builders License Practice Test

In residential work, what is the typical slump measurement range?

1. 2 to 4 inches

2. 4 to 6 inches

3. 6 to 8 inches

4. 8 to 10 inches

The correct answer is: 4 to 6 inches

In residential construction, the typical slump measurement range is usually between 4 to 6 inches, which corresponds to the answer provided. Slump is a measure of the consistency or workability of fresh concrete, determined by how far a concrete cone falls when a slump test is performed. A slump of 4 to 6 inches is often desired for most residential applications, as it provides a good balance of workability and strength. This range ensures that the concrete can flow easily into forms without being excessively watery, which could weaken the final structure. In contrast, a slump below 4 inches may indicate a mix that is too stiff, making it difficult to work with or causing poor finishing results. On the other hand, a slump above 6 inches could lead to issues with segregation of the aggregate, boosting the potential for weakened concrete due to an unstable mix. Therefore, the 4 to 6-inch range is optimal for achieving quality in residential concrete work.