4-11. Which of the following metal beads is installed to protect drywall from  edge  damage? 1. Stop 2. Corner 3. Casing 4. Edge 4-12. When you are attaching drywall, what  is  the  recommended  nailing procedure? 1. Start at the top and work down 2. Start at the side joining the previous  sheet  and  work  across 3. Start at the center and work out 4. Start at the bottom and work up 4-13. Single-nailed  drywall  should  be installed with what OC nail spacing on the (a) walls and (b) ceiling? 1. (a) 6 in. (b) 8 in. 2. (a) 8 in. (b) 6 in. 3. (a) 7 in. (b) 8 in. 4. (a) 8 in. (b) 7 in. 4-14. After  the  first  application  of joint compound to a joint, what should be the next step? 1. Allow the joint compound to dry 2. Feather the joint 3. Tape the joint 4. Sand the joint 4-15. Select from the following list the proper sequence for taping a gypsum drywall joint. A. Apply a coat of joint compound to bury tape B. Press tape into center of joint c. Allow compound to dry D. Sand edges E. Spread a bed of joint compound about 4-in. wide 1. B, E, D, A, C 2. E, B, A, C, D 3. A, B, E, D, C 4. B, A, E, C, D 4-16. When you are repairing gypsum drywall,  holes  larger  that  what minimum diameter should be cut back to the center of the nearest studs? 1. 6 in. 2. 2 in. 3. 8 in. 4. 4 in. 4-17. What  is  the  recommended  minimum thickness  of  plywood  panels  used directly  over  framing  members? 1. 1/4 in. 2. 3/8 in. 3. 1/2 in. 4. 5/8 in. 4-18. When  you  are  installing  vertical board panels,   what is the maximum spacing  of  furring  strips? 1. 16 in. 2. 24 in. 3. 36 in. 4. 48 in. 4-19. Most  acoustical  ceilings  have  what main  purpose? 1. Sound  absorption 2. Light reflection 3. Flame  resistance 4. Appearance   enhancement 4-20. Assume the dimensions of a ceiling are 16 feet 8 inches by 10 feet 2 inches. When  calculating  the material  requirements,  what dimensions  should  you  use? 1. 16 ft 0 in. by 10 ft 0 in. 2. 16 ft 8 in. by 10 ft 2 in. 3. 17 ft 0 in. by 11 ft 0 in. 4. 18 ft 0 in. by 12 ft 0 in. 4-21. Assume you are laying out the grid pattern for a ceiling. How should the main tees run? 1. Parallel to the joists 2. At a 45° angle to the joints 3. Perpendicular to the joists 4. In a crisscross pattern between the joists 20