ENGINEERING 
625.2 Trains and accessories 
Interrelations of road and rolling stock; strain and wear 
Por car bilding see 699 For time tables, traffic, etc. see 656 
Running gear 
Trucks, bogies and Bissell bogies; wheels, axles, tires, balancing; axle boxes 
and gards; lubrication 
Suspension, bearing springs 
Cars See also 699 car bilding 
Transverse section of car and track gage 
Effect of length of car in rounding curvs 
Passenger cars 
Freight and combination cars 
Brakes Buffers and couplings 
Power requirements 
Length and weight of trains. Speed 
See also 621.13 Steam engins; 621.3342 Electric engins; 621.43 Gas engins 
27 
28 
3 
32 
.33 
4 
5 
6 
71 
q11 
712 
"0 
73 
74 
75 
76 
77 
HR 
70 
Monorail rolling stock 
Inclined and mountain railways 
Funicular railways 
Rack railways 
Elevated and underground roads, subways 
Cable roads 
Street railways, tramways 
See also 621.33 Electric traction; 625.4 Elevated and underground railways; 
625.5 Cable roads; 699 Carbilding 
Roads, highways, streets 
See also local government, 352.7 Streets, highways; for pavements see 625.8 
Road systems 
Rural 
Urban 
Location 
Preliminary and locating surveys Grades Curvs 
Roadbed, foundation 
Earthwork Subsurface drainage 
Dirt roads Crowning Drainage 
Surfacing Oil and other binders 
Maintenance and repair 
Trees Parkings 
Subsurface condits, pipes, etc. 
Sewers; water, steam and gas pipes as affecting roads 
Other tonics