North Carolina Building Contractor License Practice Exam

Weld washers are recommended for metal thickness less than ______.

1. 3000

2. 4000

3. 5000

4. 6000

The correct answer is: 4000

Weld washers are essential components used in metal fabrication to create a larger bearing surface for welds and to help reduce the risk of warping or burn-through when working with thinner materials. When metal thickness is less than a certain threshold, the use of weld washers becomes particularly critical to ensure structural integrity and a strong bond. In this case, weld washers are specifically recommended for metal thicknesses under 4000. This is because as the thickness of the metal decreases, the potential for damage during the welding process increases. Utilizing weld washers helps distribute the heat generated during welding over a larger area, minimizing the risk of overheating the base material, which can lead to distortion or failure. By adhering to the recommendation of using weld washers for metal less than 4000, contractors and welders are encouraged to maintain the quality and reliability of their welds, ensuring that projects meet safety and performance standards. Choosing the correct metal thickness threshold for the use of weld washers is an important consideration in metalworking, as it ultimately supports effective and safe welding practices.