DECIMAL CLASSIFICATION 
625.8 
81 
82 
83 
84 
.85 
86 
87 
88 
888 
89 
9 
626 
1 
J 
3 
0 
627 
Ai 
- 
9 
6528 
Pavement 
Flagstone 
Stone blocks and brick 
Including cobblestone. Requirements of paving stones 
For vitrified brick see 625.87 
Wood pavements Corduroy, plank, blocks 
Concrete pavements 
Asfalt “ 
Stone roads 
Macadam, telford and other broken stone processes 
Metal, vitrified brick, reinforced blocks 
For other brick pavements see 625.82 
Sidewalks May be divided like 625.81-.87 
Curbs 
Other topics 
Ship railways 
Canal engineering 
Route 
Water supply 
Size and shape 
Locks 
Lifts and inclined planes 
Canal boats: size, shape, etc. See 623.820 Shipbilding 
Towing; power, etc. 
Irrigation canals and other irrigation works 
Ship canals 
River, harbor, and general hydraulic 
angineering See also 624.157 and 721.17 Subaqueous foundations 
Rivers: force of water, discharge, bars 
River improvement 
Harbors Breakwaters 
Docks Piers Quays Shipping facilities 
Dikes and levees, embankments 
Other protection and reclamation of land from tides and 
waves, drainage For agricultural drainage see 631.6 
Jetties 
Dredging Dredging machinery 
Dams 
Lighthouses Buoys 
Sanitary engineering Waterworks 
.01 Theories, utility .02 Compends .03 Dictionaries .04 Essays .05 Period: 
jcals .06 Societies .07 Study and teaching .08 Polygrafly .o9 History and 
description of sanitation and general sanitary works, divided geograficly like 930-009 
Water supply of towns For isolated supply see 628.7 
Sources of water supply 
Lakes, rivers, springs, wells, and pumping 
Pumping vs gravitation systems 
Pump well. standpipe. high servis. Holley system