The Golden State: Where & How to Live, Secure, Visit, Enjoy and Thrive in California

How To Design And Install Plumbing

Chapter II—Private Sewage Disposal

1. Are cesspools considered a sanitary medium for the disposal of sewage?
2. Why is the outside privy an objectionable installation?
3. What factors must be considered in the construction of a septic system?
4. What two units compose a septic system?
5. What is the purpose of a septic tank?
6. How does decomposition of the organic materials contained in a septic tank occur?
7. What gases may be found in a septic tank?
8. What changes take place in the sewage after it enters the septic tank?
9. How are the nonsoluble solids removed from the septic tank?
10. Does a septic tank purify sewage?
11. Is it permissible to discharge large volumes of storm water into a septic tank?
12. Of what materials are septic tanks usually constructed?
13. Why must the outlet and inlet inverts of a septic tank remain open?
14. Name five essential qualities a septic tank must possess.
15. What is the purpose of a baffle plate?
16. What are the minimum permissible dimensions of a septic tank?
17. What is the purpose of the purification unit?
18. What does the purification unit of a septic system accomplish?
19. Give a definition of a dry well.
20. How does a dry well differ from a cessDOol?
21. How does a filter trench function?
22. In what kind of soil may a distribution field be used?
23. Why must sewage be purified before it is discharged into an inland lake?
24. What is the purpose of a siphon compartment?

Chapter III—Materials Used for Sewer Pipe and Fittings

1. What materials are used in the construction of plumbiDg systems?
2. On what installations is vitrified clay pipe used?
3. Why must vitrified clay pipe be laid on substantial soil?
4. Under what circumstances may vitrified clay pipe be laid in unstable soil?
5. What do you understand by fittings of long radius?
6. On what installations is cast-iron pipe used?
7. Does cast-iron pipe offer any advantage over vitrified clay pipe?
8. Why is a coat of tar applied to cast-iron pipe?
9. For what purpose is galvanized steel pipe used in plumbing systems?
10. What acids affect galvanized pipe?
11. Why is wrought-iron pipe superior to steel pipe?
12. When does it become necessary to use acid-resistant pipe?
13. Why must acid-resistant pipe be well supported?
14. On what installation is brass pipe used?
15. What advantage is there in the use of lead pipe?
16. Why is copper pipe a good material for use in the plumbing system?

Chapter IV—Joints in Clay and Iron Sewer-Waste and Vent

1. Of what importance is the quality of the joints used on a plumbing system?
2. What essential qualities must a good joint possess?
3. What is the purpose of a swab?
4. What proportions of sand and cement are used in the mortar with which a cement joint is made?