North Carolina Building Contractor License Practice Exam

How wide, thick, and long should a temporary gravel entrance be?

1. 10' wide, 4" thick, 30' long

2. 12' wide, 6" thick, 50' long

3. 8' wide, 2" thick, 40' long

4. 6' wide, 3" thick, 20' long

The correct answer is: 12' wide, 6" thick, 50' long

The ideal specifications for a temporary gravel entrance are designed to ensure durability, ease of use, and effective drainage for construction sites. The correct choice specifies a width of 12 feet, a thickness of 6 inches, and a length of 50 feet. This width is sufficient to accommodate the passage of larger vehicles and equipment, which reduces the risk of traffic congestion and damage to the surrounding area. A thickness of 6 inches provides a sturdy base that can support heavier loads without being displaced or compressed, thus maintaining its integrity over time. A length of 50 feet is appropriate to ensure that vehicles do not track mud or debris onto public roadways and allows for adequate space to transition from the paved surface to the gravel. These specifications also help prevent erosion, reduce the amount of mud and dirt tracked off-site, and ensure that the site is accessible and safe for vehicles. In contrast, other options may not provide enough width, thickness, or length, which could lead to maintenance issues or operational inefficiencies during construction activities.