Topographical Surveying in Estonia Kristi Kr Association of

Topographical Surveying in Estonia Kristi Käär Association of Estonian Surveyors

Juridical basis Regulation of geodetic surveys, from Ministry of Economic Affairs and Communications, since 27. Aug 2007, will be updated 2012 Technical document describing accuracies, signs, line types and layers of digital plans in the scales 1: 500… 1: 2000 Controlled by local governments, automatic control of drawings Is being updated mostly in the part of construction surveying 12. 03. 2021 Kristi Käär, EGÜ 2

Juridical basis MTR (business register) – topographical surveying is one of three surveying activities under the Ministry of Economic Affairs. MTR is mandatory to every surveying company Bases for MTR is either Certificate (at least level 3) or according education + work experience (must be proven) Registration needs to be updated annually 12. 03. 2021 Kristi Käär, EGÜ 3

Juridical basis Client’s requirements Depends on field of Planning or Project Must not contradict the regulation Surveyors professional standard (certificate) Gives requirements for surveyor to be responsible for surveying work Level 1 -2 surveyor (technician) Level 3 -5 surveyor 12. 03. 2021 Cadastral surveying (does not give right to sign papers) Construction surveying Topographical surveying Engineering surveying Higher geodesy Kristi Käär, EGÜ 4

Market situation 12. 03. 2021 Kristi Käär, EGÜ 5

Market situation 12. 03. 2021 Kristi Käär, EGÜ 6

Market 2010 resume 12. 03. 2021 Kristi Käär, EGÜ 7

Surveying Projects For detail planning Cadastral changes Building rights of properties, restrictions For design of building areas private and apartment houses Business, industrial and agricultural buildings Schools, kindergartens, hospitals, cultural sites, jails, etc 12. 03. 2021 Kristi Käär, EGÜ 8

Surveying Projects For design of roads and railways For design of infrastructure networks Water supply and sewage to every city or settlement Internet to every home For design of ports, airports, terminals etc 12. 03. 2021 Kristi Käär, EGÜ 9

Main technical issues For detail planning Cadastral data is not accurate For design of building areas Poor data of underground networks (sometimes even inexistent!) For design of roads and railways “too much RTK GPS” Determination of telecommunication cables along the roads and track yards For design of infrastructure networks Poor data of underground networks Disproportionate requirements from Clients For design of ports, airports, terminals etc Poor data of underground networks 12. 03. 2021 Kristi Käär, EGÜ 10

Main technical issues Water supply and sewage Surveyor has to organize cleaning the manholes from waste, mud, water, sewage, ice etc if it’s necessary for the survey task Surveyor has to open manholes covered with soil, ice, asphalt Surveyor has to locate and clean septic tanks or reservoirs of local sewage systems, if data is required 12. 03. 2021 Kristi Käär, EGÜ 11

Main technical issues Telecommunication cables Surveyor should order searching of the communications cables from the predetermined company and pay both for this service and communications owner for coordination stamp 12. 03. 2021 Kristi Käär, EGÜ 12

Surveying with RTK Unsufficient sattelite signals Unsufficient communications between measurer and base point Random deviations Specially heights, up to 5… 7 cm VRS coverage Almost OK 12. 03. 2021 Kristi Käär, EGÜ 13

Seasonal difficulties Surveying during tough winter conditions Almost impossible to determ the edges of roads, manholes, culverts, ditches etc Surface heights (ice thicknesses could be to 30 cm) Determination of base points Batteries depletion 12. 03. 2021 Kristi Käär, EGÜ 14

Seasonal difficulties What help’s Existing data Aerial laser scanning (Lidar) data is available for 75% of Estonia, 100% at the end of 2011 (only for wise use!). Particular postponement of works to spring Understanding Clients 12. 03. 2021 Kristi Käär, EGÜ 15

Seasonal difficulties 12. 03. 2021 Kristi Käär, EGÜ 16

Positive trends Regulation updates Authorities giving aprovals of plans digitally Crisis has made “corrections” on the market Surveyor’s awareness and skills level has gone up due to tough requirements for certification Client’s are getting familiar with cheap vs good 12. 03. 2021 Kristi Käär, EGÜ 17

Positive trends Regulation updates Authorities giving aprovals of plans digitally Crisis has made “corrections” on the market Surveyor’s awareness and skills level has gone up due to tough requirements for certification Client’s are getting familiar with cheap vs good 12. 03. 2021 Kristi Käär, EGÜ 18

“Topo”, where are You going? Data for GIS Spatial data for Building Registre. EHR GIS project 2011 - 2012 (www. ehr. ee ) Data of underground networks Infrastructure Data Holding Project started by Association of Information Technology and Telecommunications (www. itl. ee ) Register surveyor, exchange of data 3 D Terrestrial modelling Additional possibilities Different software possibilities 12. 03. 2021 Kristi Käär, EGÜ 19

Thank you!! 12. 03. 2021 Kristi Käär, EGÜ 20