Survey of municipal and inter-municipal sewerage, Province of Novara, Municipality of Pombia
Under the Micheli Directive 3/3/1999, Lombardy’s Regional Act 26/03 and the new regional regulations 6/10, the Municipality must prepare a Piano del Sottosuolo (underground plan) or a Piano Urbano Generale dei Servizi del Sottosuolo (general urban plan of underground facilities), also known as PUGGS. As to the underground facilities, a PUGSS completes the Piano dei Servizi (Facility Plan) (art. 9, paragraph 8, Regional Act 12/05), which is one of the three key documents of the Piano di Governo del territorio (Area Management Plan) (art 7, Regional Act 12/05). The purpose of such Plan is to make rational use of the roadbed based on geological information, urban setting and underground facilities. The purpose is to properly plan and manage the development of the infrastructure.
Collected data include the “identity card” of the infrastructure as they contain all the information needed to properly asses it: materials, diameter, size, sliding levels, above sea level measurements, and sliding direction.
To do this, the following documents are developed and submitted to the client:
- Monographic sheets about each physical feature (points);
- Geo-referenced layout of the infrastructure;
- Electronic database .mdb, with full details of every feature (lines and points);
- GIS file about the infrastructure and surveyed spots, including their ID details;
- Final report to end the survey
- Finding the infrastructure to be mapped;
- Setting up a building site on the area, according to the applicable signage regulations (DM 07/2002);
- Opening the local manholes and other constructions, using specific equipment to prevent damages;
- Collecting data for a geometrical survey of each construction (street, nearest street number, size of manhole, size,
- material and protection of chamber bottom, diameter and material of pipes and connections, stairs etc). Such data
- are filed on special hardcopy field sheets as well as on digital media (PC, tablet), where databases are developed
- according to the applicable regulations (Regional Act 8/5900 dated 21st December 2007);
- Once all data have been collected, the inside of each construction is photographed, the construction is closed, an ID
- tag is put on it, and finally the surrounding area is photographed, so it can be easily recognised.
- At the same time as the geometrical survey, the area is mapped either with a GPS or with a Topcon/Leica mapping
- station, so as to find the exact location of the spots (manholes) for digital mapping in layouts and databases.
- All collected data are processed at the office, using special management software, CAD files, shapefiles, ‘as built’
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