DECIMAL CLASSIFICATION 
696 
Plumbing Gas and steam fitting, etc. 
Plumbing For principles of sanitation see 628 
Gasfitting 
Steamfitting 
Rivets and riveted joints 
Screws and screw joints 
Rust or calkt joints 
Anchors Band irons 
Other branches 
Plumbing laws See also 614 Public helth 
[eating and ventilation 
See also sanitary engineering, 628.8; home economics, 644. Por lighting see 628.9 
Fireplaces 
Stoves 
Furnaces 
Hot water, high and low pressure 
Steam, high and low pressure 
For boilers, see 621.184; for power plants, see 621.19 
Gas: coal gas, water gas, natural gas 
Electric and other methods 
Smoke flues and chimneys : 
Ventilation: air ducts, condits, fans 
Painting Glazing Paperhanging Tapestry 
Painting Oil 
Distemper and fresco 
Varnishing Polishing 
Other modes of protection 
Glazing For Staind glass see 748 
Paperhanging 
Textil hangings: tapestry 
For tapestry design, see 745 
Relief work: lincrusta, stampt lether, etc. 
Other branches 
Carbilding 
Railway and tramway cars, passenger and freight, with or without motors. For 
highway cars see 629.2 
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699