Friuli Venezia Giulia Autonomous Region - Enviromental and territorial data catalogue - IRDATfvg

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CTRN 5000 Ed2

Abstract: Numeric Technical Regional Map with a scale of 1:5000. Partition in 983 elements corresponding to the IGM sectioning 1:50000 The Regional Technical Map has been created by using the representations of Gauss-Boaga, Roma40 national system, in accordance to trigonometric vertex coordinates of the Military Geographic Institute, defined in the last available adjustment at the time of creation. The altitude derives from the high-precision levelling network of the Military Geographic Institute. The cartographic elements are inserted in the geographic grid as submultiples of IGM map, scale 1:50000. They are 2' 30'' in longitude and 1' 30'' in latitude, which correspond, in a 1:5000 scale, to 65 cm x 56 cm ca.; each element, therefore, includes a surface of approximately 900 hectares. Geographical coordinates of vertexes related to the delimitation of cartographic elements are based on the Hayford’s Reference Ellipsoid with medium European orientation (ED 1950); therefore they correspond to those of IGM cartography in a 1:50000 scale. The Gauss-Boaga grid lines have been entirely traced on each 1:5000 element, with a 500 m spacing and relative values in the last five figures - indicated on the borders. The following symbols and captions has been inserted along the delimitation of each element: a) references related to the UTM ED50 grid, with a 500 m spacing; b) references related to the geographical partition, according to ED50 system, with a 30' spacing; c) Gauss-Boaga complete coordinates, North and East, beside to each vertex; d) geographic coordinates, according to ED50 system, beside each 30'' partition; e) number and name of the bordering elements beside each side.

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Alternative title: Regional Numerical Map in scale 1: 5000 Ed. 2
Edition: Edizion 2 - since 2003
Edition date: -
Purpose: Availability of a large-scale Technical Chart for use in the various disciplinary contexts pertaining to the Region and Local Authorities.
Other cited details: L.R.27 dec. 1991, n 63
Additional info: The date of the edition cannot be indicated in a precise manner as the realization of the same edition takes place over several years through executive lots. The flight activities for the realization of the second edition updating CTRN 5000 began in May 2003. For detailed information on flight dates, see the data sheet "Lot Data CTRN 5000 Edition 2".
Production process: Aerial photogrammetry, aerial triangulation, aerial photogrammetric restitution, reconnaissance, production of graphs and computer diagrams, final inspection.
Source description: Numerical mapping at scale 1: 5,000 of the first plant.
Data accuracy: -
Data language: ita
Progress status: completed
Maintenance frequency: irregular
Maintenance notes: -
Original reference system: Monte-Mario-Italy2

Metadata language: ita
Metadata date: 2007-05-07

Subject: RAFVG - PRG - Information Systems Service and e-government
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web site: http://www.regione.fvg.it
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