Answer Key: Self-Test D-1.4

  1. a. Polymer coating
  2. d. Expected damage
  3. b. Rock guards
  4. b. Protect underground welded joints
  5. c. Freezing
  6. a. Closed cell poly
  7. d. Heat trace
  8. c. Styroform
  9. b. Steel plates
  10. b. PEX
  11. a. Pipe warmer than the ambient air temperature
  12. c. Reduce moisture content in air
  13. d. Control expansion
  14. b. Keep the pipe in line
  15. c. 3
  16. b. 0.035
  17. a. Anodic protection
  18. c. Magnesium
  19. d. Dielectric union

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Block D: Piping and Components Copyright © 2026 by Skilled Trades BC, TRU Open Press is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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