2. Geographical information system within reach November 2013 Adam Vinković, Hrvoje Kelčec ‘ Current Issues In Water Supply And Sewage ’

3. IntroductionIntroduction November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach Pipeline cadastre Technical cadastre (GIS) IMAGIS Local Government Utility CompaniesEDC IMAGIS development factors  quality-price ratio: Information technologies evolution Improvement in geodetic survey methods

4. DataData ●1 st stage – extracting existing technical documentation: Manual Digital ●2 nd stage – data acquisition using geodetic surveys: Global Positioning System (GPS) Traditional survey methods CROPOS (CROatian Positionig System) November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach

5. CROatian POsitioning System (CROPOS) Studeni 2013, Adam Vinković, Hrvoje Kelčec Geografski informacijski sustav nadohvat ruke Global Positioning System method (GPS) National network of reference GNSS stations of the Republic of Croatia Services: DPS (Differential positioning service ) VPPS (High-precision positioning service) GPPS (Geodetic-precision positioning service) Efficient, faster and more economical compared to traditional surveying methods Real-time point data acqusition

6. Field survey GPS survey of all visible pipeline system elements (y, x, h) Underground object measurement: Impossible to reach Object external appearance (positioning estimation) Object attributes (name, type, material, location, description, condition, note,...) Object photograph Possible to reach Manhole opening (object projection+ depth) November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach

7. GIS – importing and processing survey data via AutoCAD Map via IMAGIS web application 1.Exporting point coordinates to textual file 2.Editing textual file in textual editor 3.Importing textual file into GIS within web application ‘Ordinal number; X-coordinate; Y-coordinate; Elevation; Code; Note' November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach

8. IMAGIS modules Input and edit attributes stored in database Editing and drawing geometrical utility object Table report of the selected objects Linking external data (drawings, textual files, photos) and GIS objects Map plotting of various dimensions and map descriptions Spatial locating (toponym, cadastral parcel, business units, etc.) Data search: analyzing objects based on SQL queries Recording and analyzing system interventions Real time investment maintenance and management External base maps  DGU Geoportal, Google Maps (Google Street View), Bing Maps, OpenStreetMap i sl. etc. November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach

9. ConclusionConclusion Modern geodetic survey methods significantly accelerate data acquisition Numerous advantages of webGIS application IMAGIS  Processor speed and operating system don’t affect the quality GIS Number of users is not limited Internet / Intranet access and mobile device version Compatibility with AutoCAD Map IMAGIS functionality GPS survey high quality technical pipeline registry November 2013, Adam Vinković, Hrvoje Kelčec Geographical information system within reach