12
29. Plumbing Systems  843
29.1 Plumbing Codes  845
29.2 Two Separate Systems  846
29.3 Tools  848
29.4 Plumbing Supplies  850
29.5 Fixtures  854
29.6 Sealing Plumbing Systems  854
29.7 Reading Prints  855
29.8 Installing Plumbing  855
29.9 Replacing Plumbing Parts  862
29.10 Other Drain Problems  867
29.11 Wells and Pumps  867
30. Heating, Ventilation, and
Air Conditioning  871
30.1 Heating and Cooling Principles  871
30.2 Conservation Measures  872
30.3 Heating Systems  874
30.4 Air Cooling Systems  881
30.5 Ducts  882
30.6 Controls  882
30.7 Air Exchangers  884
30.8 Heat Pumps  884
Section 7 Scaffolds and
Careers
31. Scaffolds and Ladders  891
31.1 Types of Scaffolding  891
31.2 Brackets, Jacks, and Trestles  895
31.3 Ladders  899
32. Carpentry—A Career
Path  903
32.1 Economic Outlook for Construction  904
32.2 Employment Outlook  904
32.3 Working Conditions  906
32.4 Job Opportunities  906
32.5 Training  907
32.6 Personal Qualifications  909
32.7 Entrepreneurship  911
32.8 Teaching as a Construction Career  912
32.9 Related Occupations  912
32.10 Organizations Promoting Construction
Training  914
Appendix A: Carpentry Math
Review  917
Appendix B: Technical
Information  925
Glossary of Technical Terms  955
Index  992