A sidewalk clearing plow in Ottawa, Canada

Snow removal is the job of removing snow after a snowfall to make travel easier and safer. This is done by both individual households and by governments and institutions. Download high resolution version (1170x828, 195 KB)Taken by SimonP in January 2005 File links The following pages link to this file: Snowplow Snow removal Categories: GFDL images ... Download high resolution version (1170x828, 195 KB)Taken by SimonP in January 2005 File links The following pages link to this file: Snowplow Snow removal Categories: GFDL images ... Animation of snowcover changing with the seasons Snow covering a leaf. ...

Clearing by individuals

Manual snow removal

In countries with light snow, brooms can be used to brush off snow from walks and other surfaces. In colder regions with more precipitation, the main tools of the private snow clearer are the snow shovel, a large lightweight shovel used to push snow and lift it, and the snow scoop, a large and deep hopper-like implement fitted with a wide handle and designed to scoop up a load of snow and slide it on any slippery surface to another location without lifting. Shovelling entails a considerable amount of work and can be a strain on the back and the heart. Each year many senior citizens and middle aged persons die from heart attacks while shovelling snow. Those unwilling or unable to labour, especially those with large driveways or other substantial surfaces may use a snow blower. Others may hire a contractor with a plow bearing truck or a shovel. After a large snowfall businessmen with plow trucks often drive through cities offering to plow for money. A recent technological advance is the snowmelt system that heats the pavement from below and melts snow and ice after a period of time. Such systems are expensive to install and operate and they are not cost effective in areas with very low winter temperatures and large snowfalls. Some governments offer free snow clearing for the elderly and others in need. Image File history File linksMetadata Download high-resolution version (2592x1944, 1035 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Snow removal Metadata This file contains additional information, probably added from the digital camera or scanner used to... Image File history File linksMetadata Download high-resolution version (2592x1944, 1035 KB) File links The following pages on the English Wikipedia link to this file (pages on other projects are not listed): Snow removal Metadata This file contains additional information, probably added from the digital camera or scanner used to... Look up Back in Wiktionary, the free dictionary. ... The heart and lungs, from an older edition of Grays Anatomy. ... Driveway to a farm A driveway is a type of private road for local access to one or a small group of structures, and maintained by an individual or group. ... A heavy duty walk-behind two-stage snow blower. ...

Dealing with ice is more difficult. Snow blowers are rarely effective. Picks are sometimes used, but a solid spade can break through most ice. There is always the risk of damaging the pavement with these instruments. Icy areas can be covered with salt or some other substance, bags of which are widely available. Rusty spade small spade for clay soil; the other one for sandy soil and loamy soil A spade is a tool fit for digging, or something resembling that. ... A magnified crystal of a salt (halite/sodium chloride) Salt covering the floor of Bad Water in Death Valley, CA, the lowest point in the US. A salt, in chemistry, is any ionic compound composed of cations (positively charged ions) and anions (negative ions) so that the product is neutral...

Clearing by contractors

Others may hire a contractor with a winter service vehicle or a shovel. A winter service vehicle clearing roads near Toronto, Canada. ...

In some urban areas, after a large snowfall businessmen with plow trucks often drive around offering to plow for money. In cities with regular amounts of large snowfall contractors with plow trucks, often gardeners who work on contract during the summer with the same plow-less trucks, will enter into an agreement for winter plowing of a given number of customers.

Clearing by cities

Cities clear snow on a much larger scale than individuals. Most cities in areas that get regular snow maintain a fleet of snow clearing vehicles. The first to be dispatched are gritters who do some plowing but also salt the road. The salt, (via freezing point depression), helps melt the snow and ice and also gives vehicles more traction. A winter service vehicle clearing roads near Toronto, Canada. ... Freezing-point depression is the difference between the freezing points of a pure solvent and a solution of a nonelectrolyte in that solvent. ...

A backhoe loader with snowplow attachment clearing snow

Later, generally once the snow has ceased falling, front end loaders with snowplow attachments and graders cover every street pushing snow to the side of the road. Salt trucks often then return to deal with any remaining ice and snow. The trucks generally travel much faster than the plows, averaging between 30 and 40 kilometers per hour. Most cities thus have a least twice as many plows as trucks. Smaller narrow body plows, with Caterpillar tracks or huge snow tires salt and clear sidewalks in some cities, but in many others with less snow fall and/or less pedestrian traffic individuals are tasked with clearing the sidewalk in front of their homes. Ecological movements often oppose this use of salt because of the damage it does when it eventually washes off the roads and spreads to the environment in general. Image File history File linksMetadata Backhoeplowingsnow. ... Image File history File linksMetadata Backhoeplowingsnow. ... Front End Loader are an Australian rock band, consisting of Davis Claymore (vocals, and guitar), Bowden Campbell (guitar and vocals), Richard Corey (bass guitar), and Peter Kostic (drums). ... Modern grader in use by the US military. ... Caterpillar tracks are large (modular) tracks used on tanks, construction equipment and certain other off-road vehicles. ... This article or section does not cite its references or sources. ... Ecology is the branch of science that studies the distribution and abundance of living organisms, and the interactions between organisms and their environment. ...

In cities where snow steadily accumulates over the winter it is also necessary to remove the piles of snow that build up on the side of the roads known as windrows. There are a number of methods of doing this. Pulling snow is done when temperatures rise high enough for traffic to melt snow. The windrows are then broken up and spread over the road. Casting is the moving of snow by means of a shovel or plow to nearby public lands. On boulevards or highways winging back is done, which consists of pushing the snow banks further from the road. The most expensive option, but necessary when there are no nearby places to dump the snow, is to haul it away. This is most often done by large self propelled snowblowers that gather the piles of snow at the side of the road and load it into dump trucks. The snow is then dumped on the outskirts of town, or in a nearby lake, river or harbor. Snow melting machines[1] may be cheaper than moving snow, depending on the cost of fuel and the ambient temperature. A windrow is a row of cut hay or small grain crop. ... A dump truck or production truck is a truck used for transporting loose material (such as sand, gravel, or dirt) for construction. ... A winter service vehicle clearing roads near Toronto, Canada. ...

The windrows created by the plows in residential areas often block driveways and imprison parked cars. The snow pushed there by any plow is a dense, packed version of "normal" fallen snow. When the temperatures are significantly below freezing this packed snow takes some of the characteristics of solid ice. Its removal is nearly impossible without mechanical means.

A street plow in Quebec City

The largest roads and highways are the first to be cleared, roads with steep hills or other dangers are also often a priority. Streets used by buses and other mass transit are also often given higher priorities. It often takes many hours, or even days, to cover every street in a city. In some places, a snow emergency will be declared, where automobile owners are instructed to remove their vehicles from the street (or one side of a street). If cars are in the way when the plows come around, they may be hauled away by tow trucks. Some communities have standing snow emergency rules in winter, where vehicles are not allowed to be parked on streets overnight, no matter if it snows or not. After smaller snow storms only main roads are cleared while residential ones are left to be melted by the passing traffic. Decisions on immediate removal versus "natural melting" can be hard to make because the inconvenience to citizens and the economy in general must be weighed against the immediate effect on the snow removal budget at that particular moment in the season. Image File history File linksMetadata Chasse_neige. ... Image File history File linksMetadata Chasse_neige. ... An articulated bus operated by the CTA in Chicago, Illinois, USA. A Go North East Bus parked in a lay-by in Tyne and Wear, England A bus is a large road vehicle intended to carry numerous persons in addition to the driver and sometimes a conductor. ... In the United States of America, transit describes local area common carrier passenger transportation configured to provide scheduled service on fixed routes on a non-reservation basis. ... A snow emergency is declared when a major snowstorm hits or is expected to hit a city. ... Heavy Tow truck A tow truck (also called a wrecker, a breakdown truck or a breakdown lorry), is a vehicle used to take disabled motor vehicles off a roadway to another location in case of breakdown or collision, or to impound illegally parked vehicles on public or (more commonly) private...

In large cities with heavy snowfalls like Montreal and Ottawa the snow clearing expense for each season is an important part of the seasonal public works budget and each snow storm provokes a major logistical operation involving thousands of employees working in shifts 24 hours a day. The effort can vary greatly depending on the amount of snow. Montreal gets about 225cm of snow each winter and spends more than $50 million Canadian dollars each year to remove it. Toronto, with about twice the population and road surface, gets only 125 cm of snow a year and spends more than $60 million Canadian dollars each year to remove it[2]. It is estimated that Canada spends $1 billion on snow removal[3]. The employees who do this work are generally the same workers who do road maintenance work during the summer months, but in some US cities garbage trucks are also equipped with plows and used for snow removal. Many smaller US communities sign contracts with insurance companies, under which the insurance company assumes the risk of a heavy winter. The insurance company of course sets the rates such that averaged over time they will make a profit; the town is willing to overpay for snow removal in mild winters so as to avoid the risk of running dramatically over budget in the occasional severe winter. Nickname: City of Mary Motto: Concordia Salus Coordinates: Country Canada Province Québec Founded 1642 Established 1832  - Mayor Gérald Tremblay Area [1] [2]    - City 185. ... Motto: Advance Ottawa/Ottawa en avant Location of the City of Ottawa in the Province of Ontario Coordinates: Country Canada Province Ontario Established 1850 as Town of Bytown Incorporated 1855 as City of Ottawa Amalgamated January 1, 2001 Mayor Larry OBrien Local government Ottawa City Council (21 councillors) MPs...

Large organizations such as universities and airports also often have their own mechanized snow clearing force. Public transit systems generally clear bus stops while post offices clear around mail boxes. Railroads have their own snow clearing devices such as rotary snowplows. Representation of a university class, 1350s. ... Small-town post office and town hall in Lockhart, Alabama A post office is a facility (in most countries, a government one) where the public can purchase postage stamps for mailing correspondence or merchandise, and also drop off or pick up packages or other special-delivery items. ... Post boxes in Australia The yellow box is for express mail. ... This is the top-level page of WikiProject trains Rail tracks Rail transport refers to the land transport of passengers and goods along railways or railroads. ... A rotary snowplow from the Oregon Short Line on display at the Mid Continent Railway Museum in North Freedom, WI. A rotary snowplow is a piece of railroad snowfighting equipment. ...

See also

• Winter service vehicle

A winter service vehicle clearing roads near Toronto, Canada. ...

External links

• Snowmelt Systems Explained Answers to frequently asked questions about the use of radiant heat for driveway snow removal.
• Have Snow Shovel, Will Travel: A History of Snow Removal
• City of Ottawa snow clearing operations
• Snow Control Measures in Sapporo
• Snow in the Cities: A History of America's Urban Response by Blake McKelvey, the only scholarly history of snow removal (Rochester, 1995).