Plumbing  11/90



1. Do the following:

   a. Make a drawing and explain the way the hot and cold  water

      supply  system  in your home or that of a  neighbor  works.

      Tell how you would make it safe from freezing.

   b. Make  a  drawing and explain the drainage  system  of  the

      plumbing  in a house.  Show and explain the use  of  drains

      and vents.



2. Show how to use five important plumber's tools.



3. Identify  and  describe  the use of  each  of  the  following:

   washer, cap nut, float, force cup, half-and-half solder, flux,

   elbow,  tee, nipple, coupling, plug, union,  trap,  drainpipe,

   water meter.



4. Tell  what  kinds of pipe are most often used  in  a  plumbing

   system.  Tell why.



5. Cut, thread, and connect two pieces of galvanized pipe.



6. Using a gas torch under supervision, solder three copper  tube

   connections.   Include one tee, two straight pieces,  and  one

   coupling.



7. Do the following:

   a. Replace a washer in a faucet.

   b. Clean out a sink or lavatory trap.



8. Make a list of five important local health regulations related

   to plumbing.