Surveying and mapping activities of private companies in the Netherlands*) by ir. G. Jacobs, managing director of engineering bureau „Oranjewoud BV". Introduction In this lecture I will first of all try to give you an idea of the total volume of money annually spent on surveying and mapping in this country. Next, I will try to define the surveying and mapping market in the Netherlands. In doing so I am distinguish ing between the „captive market", within which public bodies and private companies meet their own surveying and mapping requirements, and the „open market", where survey contractors and their clients do mutual business. Within the scope of this meeting there is only room for a rough picture of the work done by surveying and map ping firms. Therefore, I have to restrict myself to the most important activities, involving the services of en gineering companies, survey bureaus, hydrographic surveying departments of contractors and aerial survey ing companies in the Netherlands. The following activi ties should be noted: precise levelling to determine subsidence caused by the extraction of natural gas; -tracing works and revision measurements connected with the laying of pipe lines; -contour survey mapping with regard to water man agement and the contour map of the Netherlands; -accurate large-scale mapping for designation plans and technical plans for new building and reconstruc tion of towns and villages, as well as for the registra tion of pipe lines and other management of immova bles; - hydrographic surveying. Finally, I am grateful for the services rendered by Dutch companies in our field of work. Review of the workforce in and the costs of surveying and mapping activities in the Netherlands At present there are an estimated 4000 to 5 000 people concerned with surveying and mapping and related ac tivities. Their education is described in Mr. Allen's im portant and impressive report of the education and the professional competence of the surveyor in the nine countries of the EEC. Starting from rates, in which I calculated all extra cost, I determined the total annual amount in guilders of the surveying and mapping activities roughly to be: 230 geodetic engineers (135.000) 350 surveying engineers (120.000) 800 surveying technicians! 90.000) 1200 draughtsmen 1000 assistant surveyors 1000 assistants 100 fotogrammetrists 4680 77.000) 60.000) 40.000) (126.000) D.fl. D.fl. D.fl. D.fl. D.fl. D.fl. D.fl. 31.050.000,- 42.000.000,- 72.000.000,- 92.400.000,- 60.000.000,- 40.000.000,- 12.600.000- r D.fl. 350.050.000,- Inleiding gehouden op 23 juni 1982 tijdens de door de NVG georganiseerde studiedag in het kader van de bijeenkomst van het Comité Permanent van de FIG te 's-Gravenhage. So per worker in surveying and mapping an average amount of almost D.fl. 75.000,- In the 1979 report of the Netherlands Cadastre an esti mate is given of money that is yearly spent on surveying and mapping of large-scale maps. The total amount spent in that year was estimated to be about D.fl. 300 million. The surveying and mapping market in the Netherlands If we start from the principle that the surveying and mapping market in the Netherlands is formed by the total of surveying and mapping activities, then we should divide it, within the context of this lecture, into a „captive" and an „open market". To the „captive mar ket" I reckon the surveying and mapping activities that public bodies and private companies carry out themsel ves, in order to meet their own requirements. To this end, often a specialized survey department has been formed within the organization to carry out this task. Examples are the survey departments of the Cadastre, the Ministry of Public Works, the Lake IJssel Polders Development Authority, provinces, municipalities, and companies. At times when the amount of work exceeds the capacity of the Survey Department, the activities are taken to the „open market". The „open market" therefore comprises the total offer of work assigned to third parties. It forms, as it were, the complement of the „captive market". As principals of surveying and mapping activities are to be mentioned: - Government Authorities like the Cadastre, the Survey Department of the Ministry of Public Works, the Lake IJssel Polders Development Authority, the Ministry of Agriculture and the State Forestry, and the Army Engi neers. - Public enterprises and participations such as: Postal, Telephone and Telegraph service, Netherlands Rail ways, and the Netherlands Gas Union. -Provincial authorities and companies like Provincial Public Works and Provincial Public Utilities for electri city, water and gas. - Lower government bodies such as municipalities, drainage districts, recreation boards, municipal public NGT GEODESIA 82 227

Digitale Tijdschriftenarchief Stichting De Hollandse Cirkel en Geo Informatie Nederland

(NGT) Geodesia | 1982 | | pagina 41