Self-Test D-1.1 Describe Piping and Tubing Materials

Complete Self-Test D-1.1 and check your answers.

1. What is piping marked with the word “potable” used for?
   1. Clear waste
   2. Footing drain
   3. Rain water
   4. Drinking water
2. What is thermoplastic pipe?
   1. Capable of softening or fusing when heated
   2. Capable of becoming permanently rigid when heated or cured
   3. Sensitive to shattering when struck
   4. Permanently soft and flexible
3. What does the term “nominal pipe size” refer to?
   1. Actual inside diameter
   2. Actual outside diameter
   3. Approximate inside diameter
   4. Approximate outside diameter
4. What pipe or tubing has the largest outside diameter for the same nominal size of pipe or tubing?
   1. Copper tubing size
   2. Iron pipe size
   3. Air conditioning tube size
   4. Nominal pipe size
5. What is the thread angle of National Pipe Thread?
   1. 45 degrees
   2. 56 degrees
   3. 60 degrees
   4. 65 degrees
6. What schedule number is standard weight pipe?
   1. 20
   2. 40
   3. 60
   4. 80
7. What formula is used to determine the standard dimension ratio (SDR)?
   1. Minimum wall thickness to the average outside diameter
   2. Average outside diameter to the minimum wall thickness
   3. Average inside diameter to the average outside diameter
   4. Average outside diameter to the average inside diameter
8. What type of tubing material would be identified by a stamping of K, L, M, or DWV?
   1. Aluminum
   2. Copper
   3. Plastic
   4. Steel
9. What pipe or tubing is typically used in heavy industry such as marine seawater and ship building, pulp and paper manufacturing, medical gas systems, and chemical manufacturing?
   1. Bronze alloys
   2. Carbon steel
   3. Zinc alloy
   4. Nickel and nickel alloys
10. What piping or tubing is an alloy of copper and zinc?
    1. Bronze
    2. Monel
    3. Brass
    4. Stainless steel
11. What piping material contains amounts of silicon and cast iron and could be used for acids, solvents, or bleaches?
    1. Duriron
    2. Wrought iron
    3. Black iron
    4. Stainless steel
12. What piping material that contains chromium is often used where corrosion and oxidation occur?
    1. Copper nickel
    2. Stainless steel
    3. Brass
    4. Aluminum
13. What piping material is used for potable water distribution, is very strong, fracture-resistant, and centrifugally spun?
    1. Ductile cast iron
    2. Cast iron
    3. Duriron
    4. Austenitic cast iron
14. What piping material is suitable for fire sprinkler systems?
    1. PVC CSA B181.1
    2. PE CSA B137.1
    3. CPVC standard B137.6.09
    4. CPVC Type IV Grade 1 cell class 23447

Answer Key: Self-Test D-1.1 is on the next page.