Questions and Answers on the Practice and Theory of Sanitary Plumbing - Tapa blanda

Sinopsis

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1906 edition. Excerpt: ... EXAMINATION QUESTIONS. 1. Why is a trap placed under each fixture? 2. What is a trap? 3. Name some of the principal traps in use. 4. What is meant by the trap seal? 5. What is the ordinary depth of a trap seal? 6. What advantage does the main or intercepting trap possess? 7. What are the objections to the use of the main or intercepting trap? 8. What are the comparative merits of the S and drum traps? 9. What precautions should be taken with traps in unoccupied houses during cold weather? 10. What effect might the pressure of sewer gas on the trap seal have? 11. How may the pressure of sewer gas on the trap seal be relieved? 12. With a sink properly trapped below, what should be done with the bell on the sink strainer? 13. How should the cellar drainage trap be protected from evaporation? 14. What qualities should a trap possess? IS- Name different ways in which the seal of a trap may be broken? 16. Why are internal partitions in traps dangerous? 17. Why should, traps with mechanical seals be prohibited? 18. Where may back vent pipes be connected together? 19. What is the difference between local venting and back venting? 20. What are the two principal traps on which nearly all other traps are based? 21. What style of trap should be used under a hotel or restaurant sink? 22. What is the result of double trapping? 23. Describe some grease trap. 24. What style of trap do you consider best for a bath tub, and why? 25. Why should traps be back vented? 26. Is it the amount of water or depth of seal that offers most resistance to sewer gas? 27. What are the advantages of a ventilated system of plumbing? 28. From which side of the trap should the back vent be taken? 29. What would be the result if the back vent were taken from the wrong side of...

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