40 Hour Property and Building Inspection Practice Test

This mixture is placed in forms in how many inches thick layers which are compacted into how many inches thick layers?

1. 6, 4

2. 8, 5

3. 10, 6

4. 7, 3

The correct answer is: 8, 5

The correct answer indicates that the mixture should be placed in forms in 8-inch thick layers and compacted into 5-inch thick layers. This approach is important in construction and building practices for several reasons. When layers are placed at a thickness of 8 inches, it allows for effective compaction and ensures that the material can be properly worked and consolidated without risking issues like uneven settling or voids within the layer. The thickness helps to facilitate adequate moisture retention and bonding of the materials during the curing process. Compacting the layers to a thickness of 5 inches provides the structural integrity needed for the final product. This helps to ensure that compaction is thorough without overworking the material, which can lead to degradation or a weakened structure. The choice of these specific thicknesses balances efficiency in laying the material and securing the strength required for effective load-bearing, durability, and longevity of the structure being erected. Adhering to these specifications contributes to achieving a solid foundation or structure, which is essential in inspection practices.