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Detailed structure and explanatory notes
ISIC Rev.3 code 7421Structure
This class includes consulting architectural and engineering activities, surveying, geological exploration and prospecting activities and engineering. Architectural activities concern building design and drafting and often supervision of construction, town and city planning and landscape architecture.
Engineering and technical activities concern specialized activities related to civil engineering, hydraulic engineering, traffic engineering including project management for constructions, electrical and electronic engineering, mining engineering, chemical engineering, mechanical, industrial and systems engineering, air-conditioning, refrigerating, sanitary and pollution control engineering, acoustical engineering, etc. Geological and prospecting activities utilize surface measurements and observation designed to yield information on subsurface structure and the location of petroleum, natural gas and mineral deposits and of ground water. This may involve airborne geophysical surveys, hydrological surveys, etc. Also included are map making and related land surveying activities.
Exclusions: Test drilling and testhole boring in connection with petroleum and gas extraction is classified in class 1120 (Service activities incidental to oil and gas extraction excluding surveying).
Research and development activities are classified in division 73.
Technical testing is classified in class 7422.
Interior decorating is classified in class 7499 (Other business activities n.e.c.).
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