C-43 Sheet Metal

NOTE: All questions are written and reviewed by licensed contractors who are actively working in the field.

The following questions are typical of the kind of items that are on the examination.

The correct answer is highlighted.

1. Which of the following materials is recommended to break contact between dissimilar metals in order to prevent electrolysis?
   
   
   • a. Copper striping
   • b. Rosin paper
   • c. Gypsum board
   • d. Waterproof felt
   
   
2. How much space should be provided between the bottom of the downspout and the bottom of the splash pan?
   
   
   • a. 1/2"
   • b. 1"
   • c. 2"
   • d. 3"
   
   
3. For a duct system serving a Type I kitchen hood, what is the minimum slope toward the hood or grease reservoir?
   
   
   • a. 1/4" per foot
   • b. 3/8" per foot
   • c. 1/2" per foot
   • d. 3/4"" per foot