DECIMAL CLASSIFICATION 
20 Architecture 
7 .I Theories, esthetics, architectonics .2 Compends, manuals +3 Dictionaries, 
cyclopedias .4 Essays, lectures .§ Periodicals .6 Societies .7 Education, 
study, training, schools of architecture .8 Polygrafy. collections .9 General 
history of architecture, divided geograficly lke 940-999 
Architectural construction 
Foundations See also bridge engineering, 624.1 Foundations 
Foundation bed Nature of soil Load on foundation 
Trial borings. Rock, sand, gravel, peat, quicksand 
Excavation: timbering, shoring 
Material for bilding foundations 
Divided like 620.1 
Wood 
Stone, cement, concrete 
Stone, dimension or rubble 
Cement 
Concrete 
Brick 
Pile foundations: general 
Sand piles 
Wood or timber piles 
Concrete piles 
Iron piles 
Pile foundations: method of sinking 
Piledriver 
Screw pile Boring anchor 
Disk pile 
Hydraulic pile 
Pneumatic pile 
Platform and other special foundations 
Timber platforms or gratings: plank foundations 
Concrete platforms 
Tron and concrete: reinforced concrete platforms 
Masonry platforms 
Concrete legs or stilts 
Cantilever foundations 
Subaqueous foundations 
Cofferdams 
Open crib or caisson Cylinder foundations 
Pneumatic caisson 
Freezing 
Pneumatic forcing 
Sunken wells: dredging thru wells 
Sunken tubes 
152 
153 
154 
I55 
16 
162 
163 
164 
165 
166 
167 
1 
ITT 
172 
VK 
174 
175 
176 
I77