Demolition derby

Demolition derby is a motorsport usually presented at county fairs and festivals. While rules vary from event to event, the typical demolition derby event consists of five or more drivers competing by deliberately ramming their vehicles into one another. The last driver whose vehicle is still operational is awarded the victory.

Demolition derbies originated in the United States and quickly spread to other western nations. In Europe, this type of event is called banger racing, although in a demolition derby, racers do not race against each other, instead aiming specifically to destroy the other cars. The first Demolition derby in Australia took place in January 1963.

Demolition derbies can be very dangerous. Although serious injuries are rare, they do happen. Drivers are typically required to sign a waiver to release the promoter of an event from liability. To make the event safer, all glass is removed from the vehicle, and deliberately ramming the driver's-side door area is forbidden. The driver's door is often required to be painted white with black numbers or blaze orange, or with contrasting colors, for visibility. Most demolition derbies are held on dirt tracks, or in open fields, that are usually soaked with water. This causes the competition area to become muddy, which in turn helps to further slow the vehicles. The part of the vehicle used to ram opponents varies. Some drivers use both the front and rear of the vehicle to ram the other competitors. Others tend to use only the rear end of the vehicle, to help protect the engine compartment from damage.

Derby

Derby (ⁱ/ˈdɑːrbi/ DAR-bi, locally /ˈdɑːrbɛ/ DAR-beh) is a city and unitary authority area in the East Midlands region of England. It lies on the banks of the River Derwent in the south of the county of Derbyshire, of which it is the county town. In the 2011 census, the city had a population of 248,700 and 1,543,000 in the wider metro area.

As home to Lombe's Mill, an early British factory, Derby is considered a birthplace of the Industrial Revolution. With the arrival of the railways in the 19th century, and because of its strategic central location, the city grew to become a centre of the British rail industry.

Today, Derby is an internationally renowned centre for advanced transport manufacturing, home to the world’s second largest aero-engine manufacturer, Rolls-Royce, and Derby Litchurch Lane Works—the UK's only remaining train manufacturer. The Toyota Manufacturing UK's automobile headquarters is south west of the city at Burnaston.

History

Origins

The Roman camp of 'Derventio' was probably at Little Chester/Chester Green (grid reference SK353375), the site of the old Roman fort. Later the town was one of the 'Five Boroughs' (fortified towns) of the Danelaw, until it was captured by Lady Aethelflaed of Mercia in July 917, subsequent to which the town was annexed into the Kingdom of Mercia.

Demolition

Demolition is the tearing-down of buildings and other structures. Demolition contrasts with deconstruction, which involves taking a building apart while carefully preserving valuable elements for re-use.

For small buildings, such as houses, that are only two or three stories high, demolition is a rather simple process. The building is pulled down either manually or mechanically using large hydraulic equipment: elevated work platforms, cranes, excavators or bulldozers. Larger buildings may require the use of a wrecking ball, a heavy weight on a cable that is swung by a crane into the side of the buildings. Wrecking balls are especially effective against masonry, but are less easily controlled and often less efficient than other methods. Newer methods may use rotational hydraulic shears and silenced rock-breakers attached to excavators to cut or break through wood, steel, and concrete. The use of shears is especially common when flame cutting would be dangerous.

The tallest planned demolition of a building was the 47-story Singer Building in New York City, which was built in 1908 and torn down in 1967–1968 to be replaced by One Liberty Plaza.

Antelope Valley

Antelope Valley is located in northern Los Angeles County, California and the southeast portion of Kern County, California, and constitutes the western tip of the Mojave Desert. It is situated between the Tehachapi and the San Gabriel Mountains. The valley was named for the pronghorns that roamed there until being eliminated by bad weather in the 1880s and hunters. The principal cities in the Antelope Valley are Palmdale and Lancaster.

Geography

The Antelope Valley comprises the western tip of the Mojave Desert, opening up to the Victor Valley and the Great Basin to the east. Lying north of the San Gabriel Mountains and southeast of the Tehachapis, this desert ecosystem spans approximately 2,200 square miles (5,698 km²). Precipitation in the surrounding mountain ranges contributes to groundwater recharge.

Flora and fauna

The Antelope Valley is home to a wide range of plants and animals. This includes hundreds of plants such as the California Juniper, Joshua tree, California Scrub Oak, Creosote, and wildflowers, notably the California poppy. Winter brings much-needed rain which slowly penetrates the area's dry ground, bringing up native grasses and wildflowers. Poppy season depends completely on the precipitation, but a good bloom can be killed off by the unusual weather in the late winter and early spring months.