Lmccarthy: Created page with "canal maintenance projectOver time due to natural weathering, corrosion, boat transportation, and carrying sewage the canals dete..."

2012-12-06T22:00:05Z

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[[File:Canal maintenance.jpg|thumb|400 px|canal maintenance project]]Over time due to natural weathering, corrosion, boat transportation, and carrying sewage the canals deteriorate (''see [[canal|Canal Degradation]]'') and collect sediment. This requires maintenance in the form of dredging. Other surrounding accessible [[Urban Elements]] are maintained during the dredging process. Elements usually maintained simultaneously are [[Canal Wall|Canal Walls]], [[Gatoli|Sewers]], some components of [[Bridges]], and if accessible [[Utilities]].

== Dredging Techniques ==

[[File:hydraulic shovel.jpg|left|thumb|Hopper and hydraulic shovel used to dredge canals]] Dredging is the process of cleaning the bed of harbors or waterways by removing silt and rubbish with a dredge. There are two methods used to dredge the canals of Venice:

*[[Wet Dredging]]
*[[Dry Dredging]]

[[Wet Dredging]] can be done without draining a [[Canal]] segment and therefore is faster and cheaper while [[Dry Dredging]] requires preparation and the removal of water from the [[Canal]] segment.
{{-}}<ref> The Building Blocks of Venice:Preserving knowledge of a city's infrastructure and maintenance. Worcester Ma. Worcester Polytechnic Institute.2011
[https://sites.google.com/site/venicemaintained/proposal] </ref>

== Disposal of Sediment ==
disposal of sediment is not a simple process that can be captured accurately. It includes transporting exported sludge to a treatment plant where further testing and treating occurs. The sludge is categorized and treated accordingly. For more information see [[Sedimentation]].

== Restoration Specifications ==
[[File:Canal cross section.png|right|thumb|350 px|Post restoration dimensions]]
After dry dredging of a [[Canal]] there are strict dimensions that the [[Canal]] must fit before being re-flooded. This dimension, refereed to by Venetians as ''Rio Profilo "Teorico" da Norme'', translates "Canal Theoretical Profile Rules". Because in dry dredging the [[Canal]] must be completely emptied this offers a great opportunity to reconstruct the dimensions of the [[Canal]] in order to ensure safe passage of boats, an optimal placement of the [[Gatoli|Gatoli Outlets]] and a sloping of the canal floor to defer sediment build up. All depth measurements of the [[Canal]] dimensions are measured based on a reference point called "[[Zero Reference Point|''the Mareographic Zero'']]". <ref> Insula Spa
http://www.insula.it/
</ref>

== References ==
<references/>

== See Also ==
*[[Canals]]
*[[Canal]]
*[[Urban Maintenance]]
*[[Insula]]

[[Category:Canals]]

Canal maintenance - Revision history

Lmccarthy: Created page with "canal maintenance projectOver time due to natural weathering, corrosion, boat transportation, and carrying sewage the canals dete..."