- ARC 000: Belonging to the Subject; not further Classified
- ARC 001: Architecture in General
- ARC 040: Structural Design Theory
- ARC 050: Methods of Presentation
- ARC 100: Building Physics; Architecture and Other TopicsBuilding Physics see also BAU 301
- ARC 105: Sound Insulation
- ARC 110: Thermal Insulation
- ARC 115: Damp Proofing
- ARC 120: Fire Protection
- ARC 125: Building Safety
- ARC 139: Other
- ARC 150: Sustainable Architecture; Environmental Building
- ARC 160: Building Biology
- ARC 170: Architectural Psychology
- ARC 175: Architectural Sociology
- ARC 180: Building PolicyBuilding Policy see also BAU 010
- ARC 185: Building Sector / Construction IndustryReal Estate Industry see also BAU 020
- ARC 190: Building Research / Construction ResearchBuilding Research (Funding Bodies...) see also BAU 030
- ARC 193: Home Modernisation
- ARC 195: Refurbishment
- ARC 105: Sound Insulation
- ARC 200: Construction ManagementConstruction Management see also BAU 050
- ARC 250: Structural Design
- ARC 255: Structural Design
- ARC 260: StaticsStatics, Structural Analysis see BAU 150
- ARC 270: Structural Design According to Type of Construction
- ARC 273: Steel ConstructionSteel Construction see also BAU 500
- ARC 276: Concrete & Reinforced Concrete ConstructionSolid Construction; Reinforced Concrete Construction see BAU 400
- ARC 279: Timber ConstructionTimber Construction see also BAU 450
- ARC 282: MasonryMasonry / Brickwork Construction see BAU 445
- ARC 285: Lightweight Structures
- ARC 288: Prefabricated Construction
- ARC 273: Steel Construction
- ARC 291: Industrialised Construction
- ARC 295: Finishings
- ARC 299: Other
- ARC 255: Structural Design
- ARC 300: Building Installations
- ARC 350: Sustainable ArchitectureUrban Ecology, Town / Urban Planning and Protection of the Environment see also RPL 630
- ARC 351: Theory Sustainable Architecture
- ARC 352: Certificates, e.g. EnEV
- ARC 355: Methods, e.g. Simulation
- ARC 358: Zero Energy Houses
- ARC 359: Sustainable Houses
- ARC 360: Building Physics and Sustainability
- ARC 370: Energy Efficiency in Buildings
- ARC 375: Regenerative Energy in Buildings
- ARC 380: Modernisation and Energy Efficiency
- ARC 385: Building Life Cycle and Energy Efficency
- ARC 351: Theory Sustainable Architecture
- ARC 400: Buildings
- ARC 410: Architectural Elements
- ARC 413: Building Envelope; Facade
- ARC 416: Walls
- ARC 419: Columns; Pillars; Arches
- ARC 422: Arcades; Passages
- ARC 425: Vaults; Domes; Cupolas
- ARC 428: Roofs; Ceilings
- ARC 431: Floors; Paving
- ARC 434: Balconies; Loggias; Terraces
- ARC 436: Conservatories
- ARC 437: Towers; Bay Windows
- ARC 441: Stairs
- ARC 443: Ramps; Banister
- ARC 446: Doors; Gates; Windows
- ARC 447: Attics / Lofts
- ARC 449: Further Architectural Elements
- ARC 413: Building Envelope; Facade
- ARC 450: Other Design Features
- ARC 460: Types of Buildings
- ARC 463: Healthcare Buildings; Hospitals
- ARC 466: Commercial Buildings
- ARC 469: Industrial Buildings; Industrial Plants
- ARC 472: Administrative Buildings
- ARC 475: Agricultural Buildings
- ARC 478: Rural Dwellings / Buildings
- ARC 487: Governmental Buildings
- ARC 500: Cultural Buildings
- ARC 520: Assembly Buildings
- ARC 530: Transport BuildingsVehicle Engineering see VER ff
- ARC 540: Representative Buildings
- ARC 550: Military Structures; Fortifications
- ARC 560: Homes
- ARC 600: Buildings for Specific Groups of Persons
- ARC 603: Accommodation for Elderly PersonsRetirement Homes; Senior Citizens Home see ARC 578
- ARC 606: Universal Design, Accessibility
- ARC 609: Prisons
- ARC 619: Other
- ARC 603: Accommodation for Elderly Persons
- ARC 620: Hotels and Catering
- ARC 626: Restaurants; Cafés and Bars
- ARC 640: Sports and Leisure Facilities
- ARC 660: Housing / Residential Buildings
- ARC 680: Buildings for Religious Purposes
- ARC 685: Glass Structures
- ARC 690: Building Types Regarding Form
- ARC 699: Other Types of Buildings and Constructions
- ARC 463: Healthcare Buildings; Hospitals
- ARC 700: Interior Design
- ARC 765: Architectural Theory; Architectural Aesthetics; Architectural Criticism
- ARC 770: History of Architecture Across Time and Conservation
- ARC 771: Styles
- ARC 772: Building Survey; Dating Methods; Material Science; Documentation
- ARC 773: Conservation of Monuments and Historical Buildings
- ARC 776: Analytical and Restoration Methods
- ARC 777: Timber (Timber Frame, Timber Roof Structures, Sculpture)
- ARC 778: Stone (Masonry; Foundations, Sculpture)
- ARC 779: Walls (Plastering, Vaults, Mural Painting)
- ARC 780: Metal (Iron Structure, Sheet Metals, Sculpture, Decorative Arts)
- ARC 781: Textile (Wall and Floor Coverings, Decorative Arts)
- ARC 782: Glass, Porcelain
- ARC 783: Other
- ARC 784: Development of Listed Buildings; Modern Architecture in Historical Environments, Old and New
- ARC 776: Analytical and Restoration Methods
- ARC 785: History of Settlements and Urban Development
- ARC 786: Specific Types of Buildings and their History
- ARC 787: Public Buildings (Governmental, Administrative, Educational, Academic, Art-Related Buildings and Hospitals)
- ARC 788: Halls, Residences, Palaces
- ARC 789: Dwellings, Residential Buildings
- ARC 790: Gardens, Plazas / Squares
- ARC 791: Transport Buildings
- ARC 792: Military Structures, Fortifications
- ARC 793: Commercial and Industrial Buildings, Guesthouses
- ARC 794: Buildings for Religious Purposes
- ARC 787: Public Buildings (Governmental, Administrative, Educational, Academic, Art-Related Buildings and Hospitals)
- ARC 795: History of Architectural Elements
- ARC 771: Styles
- ARC 800: The Ancient World in General
- ARC 801: Ancient Authors
- ARC 802: Experts in Architecture History; Archaeologists; Archaeological Associations; Travelogues
- ARC 803: History of Architecture and Archaeology in the Ancient World in General
- ARC 804: History of Settlements and Urban Development
- ARC 805: History of Specific Types of Buildings
- ARC 806: Architectural Elements
- ARC 807: Architectural Technology; Construction; Craft; Drawings; Weights & Measures
- ARC 808: Craft, Technology in General
- ARC 809: Other (e.g. Pottery, Sculpture, Furniture)
- ARC 801: Ancient Authors
- ARC 812: Prehistoric Times
- ARC 820: Mesopotamia, Persia
- ARC 830: Ancient Egypt
- ARC 831: History of Architecture
- ARC 832: History of Settlements and Urban Developmenthistory of Specific Types of Buildings:
- ARC 833: Buildings for Religious Purposes (Temples, Altars…)
- ARC 836: Pyramids, Necropolis, Tombs, Tomb Monuments
- ARC 842: Architectural Technology, Construction, Craft
- ARC 844: Other (e.g. Pottery, Sculpture, Paintings)
- ARC 831: History of Architecture
- ARC 847: Ancient Greece, Cretan/mycenaean/minoan Culture
- ARC 848: History of Architecture
- ARC 849: History of Settlements and Urban Developmenthistory of Specific Types of Buildings
- ARC 850: Buildings for Religious Purposes (Temples, Altars…)
- ARC 851: Public Buildings (Theatres, Stadiums…)
- ARC 852: Residential Buildings, Palaces
- ARC 853: Graves, Necropolis, Tombs, Tomb Monuments, Heroa
- ARC 854: Open Spaces , Gardens, Plazas / Squares
- ARC 855: Water Facilities (Aqueducts, Drain, Cisterns…)
- ARC 857: Fortifications, Military Technology
- ARC 859: Architectural Elements
- ARC 860: Architectural Technology, Construction, Craft, (Stone Works, Roof Structures, Timber Construction)
- ARC 861: Craft in General
- ARC 862: Other (e.g. Pottery, Sculpture, Mosaics, Paintings)
- ARC 848: History of Architecture
- ARC 865: Ancient Rome / Etruscan Culture
- ARC 866: History of Architecture
- ARC 867: History of Settlements and Urban Development; History of Specific Types of Buildings
- ARC 868: Buildings for Religious Purposes (Temples, Altars…)
- ARC 869: Public Buildings (Theatres, Basilicas, Stadiums, Thermae...)
- ARC 870: Residential Buildings, Palaces
- ARC 871: Graves, Necropolis, Tombs, Tomb Monuments
- ARC 872: Open Spaces , Gardens, Plazas / Squares
- ARC 873: Water Facilities (Aqueducts, Drain, Cisterns…)
- ARC 874: Transport Structures and Buildings (Roads, Harbours...)
- ARC 875: Fortifications, Military Technology (City Walls, Gates, Border Defense, e.g. Limes)
- ARC 876: Other Buildings
- ARC 877: Architectural Elements (Columns, Consoles, Tiles, Terracotta, Spolia ...)
- ARC 878: Architectural Technology, Construction, Craft, (Stone Works, Roof Structures, Timber Construction)
- ARC 879: Craft in General
- ARC 880: Other (e.g. Pottery, Sculpture, Mosaics, Paintings, Coins, Furniture...)
- ARC 866: History of Architecture
- ARC 885: Early Christian/ Byzantine Culture
- ARC 886: History of Architecture
- ARC 887: History of Settlements and Urban Development
- ARC 888: Specific Types of Buildings
- ARC 889: Architectural Elements
- ARC 892: Other (e.g. Pottery, Sculpture, Mosaics, Paintings...) History of Architecture of the Ancient World in Topographical Order)
- ARC 895: Ancient Sites in Alphabetical Order History of Architecture from the Middle Ages to Contemporary
- ARC 886: History of Architecture
- ARC 900: History of Architecture from the Middle Ages to the Present Day in General
- ARC 901: History of Settlements and Urban Development
- ARC 902: Buildings for Religious Purposes
- ARC 903: Public Buildings (Governmental, Administrative, Educational, Academic, Art-Related Buildings and Hospitals) Public Buildings (Governmental, Administrative, Educational, Scientific, Art-Related Buildings)
- ARC 904: Residences, Palaces, Castles
- ARC 905: Dwellings, Residential Buildings
- ARC 906: Gardens, Plazas / Squares
- ARC 907: Transport Buildings
- ARC 908: Fortifications
- ARC 909: Commercial and Industrial Buildings, Guesthouses
- ARC 910: Agricultural Buildings
- ARC 911: Healthcare Buildings
- ARC 913: Architectural Elements, Styles History of Architecture from the Middle Ages to the Present Day in Chronological Order
- ARC 914: Other
- ARC 901: History of Settlements and Urban Development
- ARC 915: Architecture History from Middle Ages to Present, in Chronological Order
- ARC 916: History of Architecture of the Middle Ages (Romanesque Period, Gothic Period)
- ARC 917: History of Architecture During Modern Times (Renaissance, Baroque, Rococo Era)
- ARC 918: History of Architecture During 19Th Century
- ARC 919: History of Architecture since 1900
- ARC 920: History of Architecture since 2000
- ARC 916: History of Architecture of the Middle Ages (Romanesque Period, Gothic Period)
- ARC 921: Architecture and History of Architecture in Germany
- ARC 922: History of Architecture of the Middle Ages in Germany
- ARC 923: History of Architecture During Modern Times in Germany
- ARC 924: History of Architecture During 19Th Century in Germany
- ARC 925: History of Architecture since 1900 in Germany
- ARC 926: History of Architecture in Germany 1945-1989
- ARC 927: Architecture in Germany since 1989
- ARC 928: Berlin
- ARC 933: Brandenburg
- ARC 934: Mecklenburg-Western Pomerania
- ARC 935: Schleswig-Holstein
- ARC 936: Hamburg
- ARC 937: Bremen
- ARC 938: Lower Saxony
- ARC 939: Saxony-Anhalt
- ARC 940: Saxony
- ARC 941: Thuringia
- ARC 942: Hesse
- ARC 943: North Rhine-Westphalia
- ARC 944: Rhineland-Palatinate and Saarland
- ARC 945: Baden-Württemberg
- ARC 946: Bavaria
- ARC 922: History of Architecture of the Middle Ages in Germany
- ARC 961: Architecture and History of Architecture in Europe
- ARC 962: Austria and Alpine Countries in General
- ARC 965: Switzerland
- ARC 967: Italy and Mediterranean
- ARC 974: Spain
- ARC 975: Portugal
- ARC 976: France
- ARC 979: Netherlands
- ARC 980: Belgium, Luxembourg
- ARC 981: Great Britain and Ireland
- ARC 984: Northern Europe, Scandinavia (Denmark, Finland, Iceland, Norway, Sweden)
- ARC 985: Eastern Europe (e.g. Poland, Slovakia, Czech Republic, Hungary)
- ARC 986: Russia and Former Sowjet Republic
- ARC 987: South-Eastern Europe (Albania, Bulgaria, Greece, Former Yugoslavia, Romania)
- ARC 962: Austria and Alpine Countries in General
- ARC 988: Architecture and History of Architecture in Asia, America, Africa and Australia
- ARC 989: Near East (e.g. Arabian Peninsula, Iraq, Israel, Jordan, Lebanon, Syria, Turkey) and Islamic Architecture in General)
- ARC 990: Middle East (e.g. Afghanistan, Bangladesh, Bhutan, India, Iran, Nepal, Pakistan, Sri Lanka)
- ARC 991: Far East (e.g. China, Indonesia, Japan, Cambodia, Korea, Laos, Malaysia, Mongolia, Myanmar, Philippines, Singapore, Taiwan, Thailand, Vietnam)
- ARC 992: North America
- ARC 997: Central and South America
- ARC 998: Africa
- ARC 999: Australia
- ARC 989: Near East (e.g. Arabian Peninsula, Iraq, Israel, Jordan, Lebanon, Syria, Turkey) and Islamic Architecture in General)