Michigan Residential Builders License Practice Test

In coarse aggregate like pea stone and gravel, what is the generally accepted maximum size?

1. 1 inch or less

2. 1 1/2 inches or less

3. 2 inches or less

4. 2 1/2 inches or less

The correct answer is: 1 1/2 inches or less

The generally accepted maximum size for coarse aggregate such as pea stone and gravel is 1 1/2 inches or less. This specification is significant in construction and engineering projects, as the size of the aggregate affects the strength, durability, and workability of the concrete or other mixtures where it's used. Using aggregate that is larger than 1 1/2 inches can create problems in terms of compaction and bonding with cement or other binding materials, which may lead to weaker structural integrity and potential issues during the mixing process. When designing concrete mixes, adherence to this size guideline ensures more uniform particle distribution, which is crucial for achieving optimal strength characteristics in the finished product.