Most plumbing codes designate Schedule _____ as the minimum size ...

[theo]

Most plumbing codes designate Schedule _____ as the minimum size of plastic pipe for use in or under
  buildings.
 
  A) 20
  B) 30
  C) 40
  D) 50

Question 2

Larger SDR numbers on a plastic pipe indicate _____ inside pipe diameter and _____ pipe walls.
 
  A) smaller; thinner
  B) smaller; thicker
  C) larger; thinner
  D) larger; thicker

[heinisk01]

Answer to Question 1

Answer: C

Answer to Question 2

Answer: C

[theo]

Great answer, keep it coming

[dantucker]

Thanks for the timely response, appreciate it