8. Have you ever cleaned the overflow to a tub or basin? Should they be cleaned?
9. What are traps? What may cause them to fail to work?
10. How would you select a good trap? How would you clean it?
11. Describe the construction of a septic tank. What is the action that takes place in a septic tank? What care should be given to it?
12. Examine the tank to a water closet. How does it operate?
PART VI
Laundry Equipment.