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How many feet is in 1/8 of a mile in dragstrip?
Drag strips that are ¼ mile are approximately 1,320 feet or 402 meters while 1/8 mile comes out to only 660 feet or 201 meters.
How many feet is a quarter mile track?
Although a quarter mile (1320 feet, 402 m) is the best known measure for a drag track, many tracks are eighth mile (201 m) tracks, and the premiere classes will run 1,000 foot (304.8 m) races.
How many feet is in a 10th of a mile?
Answer: There are 528 feet in 1/10 of a mile.
How fast does a Funny Car go in a quarter-mile?
A Top Alcohol Dragster can travel as fast as 285 mph in the quarter-mile.
How many laps is a mile on a 1/8 track?
1600 meters – Roughly one mile or four laps around the track.
How many feet are in the mile?
Why a Mile Is 5,280 Feet | Reader’s Digest.
How many miles is a quarter mile?
The 440-yard dash, a sprint footrace in track and field competition on a 440 yards (1,320 ft; 400 m; 0.25 mi) oval.
How long does it take to walk .7 miles?
| Miles | Relaxed Pace | Normal Pace |
|---|---|---|
| 5 miles | 1 hr, 40 mins | 1 hr, 15 mins |
| 6 miles | 2 hrs | 1 hr, 30 mins |
| 7 miles | 2 hrs, 20 mins | 1 hr, 45 mins |
| 8 miles | 2 hrs, 40 mins | 2 hrs |
How long is eighth mile?
Mile abbreviated as m is an English unit of length which is equal to 5,280 feet, or 1,760 yards. 1/8 or eighth mile means approximately eight miles from the source place. Similarly 1/4 or quarter mile means approximately four miles from the source place.
How long is a drag strip?
drag racing, form of motor racing that originated in the United States and in which two contestants race from a standing start side by side on a drag strip—a flat, straight course, most commonly 1/4 mile (0.4 km) long.
What is the fastest ever recorded in a drag race of ¼ of a mile?
DragTimes takes us through the overview of the car, then does a burnout demonstration and several drag races that resulted in a world record time of 8.582 seconds at 167.51 mph (269.5 km/h). Results (Michelin Pilot 4S Tires): #1 8.74 seconds @ 165.52 mph (without burn out.
How many feet is 1 mile in Michigan?
And when you ask Google the question, you get the answer: 1 mile = 5280 feet.
How many 10ths make a mile?
Splitting a mile into tenths means dividing it up into 10 equal parts. If one mile contains 10 tenths of a mile, 60 miles contains 60 × 10 tenths of a mile. Work out 60 × 10 = 600.
How many steps is .10 miles?
| Miles | Average walk (3mph) | Run (6mph) |
|---|---|---|
| 10 miles | 22520 steps | 16720 steps |
| 11 miles | 24772 steps | 18392 steps |
| 12 miles | 27024 steps | 20064 steps |
| 13 miles | 29276 steps | 21736 steps |
What is footage of an acre?
acre, unit of land measurement in the British Imperial and United States Customary systems, equal to 43,560 square feet, or 4,840 square yards.
How many feet are in a mole?
And when you ask Google the question, you get the answer: 1 mile = 5280 feet.
What is 3/4 of a mile long?
The track is measured in units called furlongs. One furlong is equivalent to 1/8 mile.
How long does it take to walk a slow mile?
It takes 10 to 12 minutes to walk at a moderate pace. Mile: A mile is 1.61 kilometers or 5280 feet. It takes 15 to 20 minutes to walk 1 mile at a moderate pace. 3K: 3 kilometers equals 1.85 miles, or 9842.5 feet, or just a little less than 2 miles.
What Does Drag Strip Mean? How Long is a Drag Strip? – PowerSportsGuide
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What Does Drag Strip Mean
How Wide is a Drag Strip
What is the Length of a Drag Strip
Why Did Drag Racing Go to 1000 Feet
How Long Does a 14 Mile Drag Strip Need to Be
How Much Would it Cost to Build a 14 Mile Drag Strip
What Drag Strip Has 4 Lanes
Why Are Drag Strips So Sticky
Conclusion
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Determine Drag Strip efficiency and converting 1/8 Mile ET to 1/4 Mile – YouTube
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Dragstrip – Wikipedia
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How many feet are in 1 10 of a mile[solved]
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Error 403 (Forbidden)
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How many feet is an 1/8 of a mile? – F150online Forums
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- Summary of article content: Articles about How many feet is an 1/8 of a mile? – F150online Forums well there are 5280 feet in a mile, so 1/8 would be 660 feet. MadNess , 11-12-2001 12:54 AM. Senior … …
- Most searched keywords: Whether you are looking for How many feet is an 1/8 of a mile? – F150online Forums well there are 5280 feet in a mile, so 1/8 would be 660 feet. MadNess , 11-12-2001 12:54 AM. Senior … How,many,feet,1,8,mile, How many feet is an 1/8 of a mile?, f150,ford,forum,f150online,reviews,parts,sale,truck,ford trucks,ford f150,1997 FORD F150,1998 FORD F150,1999 FORD F-150,2000 FORD F-150,2001 FORD F-150,2002 FORD F-150,2003 FORD F-150,2004 FORD F-150,2005 FORD F-150,2006 FORD F-150,2007 FORD F-150, 2008 FORD F-150, 2009 FORD F-150,FORD F150,LATE-MODEL,F-150,SVT,LIGHTNING,KING RANCH,SUPERCREW,PICKUP,PHOTOS,PICTURES,SPECIFICATION,GRAPHICS,IMAGES,AFTERMARKET,SUPERCAB,FLARESIDE, 4×2,4×4,REGULAR CAB,STYLESIDE,DISCUSSION,FAQ,UPGRADES,SPECIFICATIONS,PERFORMANCE,FUEL MILEAGE,SVT RAPTOR,2011 F-100,F100,2010 F-150, 2011 F-150, 2012 F-150, Ecoboost, 2013 F-150Lightning – How many feet is an 1/8 of a mile? – How many feet is an 1/8 of a mile? Brain is on the fritz.
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How Many Feet Is An Eighth Of A Mile |Most detailed- Dogiman
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- Summary of article content: Articles about How Many Feet Is An Eighth Of A Mile |Most detailed- Dogiman How long is an 8th of a mile? An eighth of a mile is 220 yards now 3 feet to a yards makes 660 ft What is 1/8 of a mile called? …
- Most searched keywords: Whether you are looking for How Many Feet Is An Eighth Of A Mile |Most detailed- Dogiman How long is an 8th of a mile? An eighth of a mile is 220 yards now 3 feet to a yards makes 660 ft What is 1/8 of a mile called? How long is an 8th of a mile? An eighth of a mile is 220 yards now 3 feet to a yards makes 660 ft What is 1/8 of a mile called? A furlong is a measure of distance in imperial units and US customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, 10 chains or approximately 201 metres What makes up 1 mile? Mile, any of various units of distance, such as the statute mile of 5,280 feet (1609 km) It originated from the Roman mille passus, or “thousand paces,” which measured 5,000 Roman feet What’s the fastest 1/4 mile time ever? Fastest 1/4 mile ever 358 secs @ 386 mph (62161 km/h)Santa Pod dragstrip is the venue in which the current world drag racing record, a time of 358 seconds How long does 8 miles take to walk? Here are some figures for different walking paces: Miles Relaxed Pace Fast Pace 5 miles 1 hr, 40 mins 55 mins 6 miles 2 hrs 1 hr, 6 mins 7 miles 2 hrs, 20 mins 1 hr, 17 mins 8 miles 2 hrs, 40 mins 1 hr, 28 mins What is 3/8 in a decimal? Answer: 3/8 as a decimal is 0375 How many feet is 100th of a mile? How far is 100 miles in feet?Convert 100 Miles to Feet mi ft 10000 528,000 10001 528,053 10002 528,106 10003 528,158 What things are 8 inches? Did you know? 8 inches is equal to 2032 centimeters or 0666 feet Small box Kitchen knife Banana 8 quarters 4 Golf tees Mouse pad Cake pan Adjustable wrench Is 05 miles half a mile? 1/2 mile =05 miles = 5/10 miles = 50/100 miles So, 063 miles is greater than 1/2 mile What car has the fastest 1/4 mile time? By 1/4 mile or 400 meter times (11 seconds or less) Car Year Time Including up to 1 foot rollout Bugatti Veyron Super Sport 2010 McLaren 720S 2018 99 s at 2385 km/h (1482 mph) Bugatti Veyron 2006 101 s at 2285 km/h (142 mph) How many feet makes up 1 mile? Why Are There 5,280 Feet in a Mile?Apr 24, 2019 Who holds the mile world record? The world record in the mile run is the fastest time set by a runner in the middle-distance track and field event The IAAF is the official body which oversees the records Hicham El Guerrouj is the current men’s record holder with his time of 3:4313, while Sifan Hassan has the women’s record of 4:1233 What is the fastest 1/8 mile time? True Cousins, a Danish pure electric drag racing team, has set a new NEDRA world record for the 1/8-mile track Their TC-X vehicle notched a 48968 second time and 233 km/h (1448 mph) at the Malmö Raceway in Sweden What is the fastest 1/4 mile time for a street legal car? It was the world’s quickest and fastest street legal car in the 1/4 mile as of June 2012, with a 659 @ 220 mph elapsed time Jeff Lutz is now the fastest street legal in the world with a time of 585 @250 mph How many feet is 4 miles? How far is 4 miles in feet? 4 mi to ft conversionConvert 4 Miles to Feet mi ft 400 21,120 401 21,173 402 21,226 403 21,278 What is 7/8 into a decimal? Answer: 7/8 as a decimal is written as 0875 How fast can a Tesla do a 1/8 Mile? 0-60 mph in 274 s 1/8 mile in 663 seconds at 9804 mph (158 km/h)Let’s see the event from DragTimes’ perspective and hear first impressions Category Races and Chases Tags dragtimes Make/Model Tesla Model S Body Style Sedan Which is longer quarter mile or eighth mile? A dragstrip is a facility for conducting automobile and motorcycle acceleration events such as drag racing Although a quarter mile (1320 feet, 402 m) is the best known measure for a drag track, many tracks are eighth mile (201 m) tracks, and the premiere classes will run 1,000 foot (3048 m) races Why is a foot divided into 12 inches? Initially, the Romans divided their foot into 16-digits, but they later split it into 12 unciae (which in English means ounce or inch) In the United States, a foot was estimated to be 12 inches with an inch defined by the 1893 Mendenhall order which stated that one meter is equal to 3937 inches How fast is an 8 second car? The violence of the launch The frantic revs, the merciless shifts, the fact that the driver hits fifth gear before crossing the line The only question is: how fast is he going? That’s 861 seconds at 170 miles per hour What cars do 0 60 in 7 seconds? 20 Cars Under ,000 That Go 0 To 60 In Under 7 Seconds 20 2018 Mazda 3 Touring (,890) 19 2018 Honda Civic (,340) 18 2018 Honda Accord (,570) 17 2018 Toyota Camry (,645) 16 2018 Kia Soul (,200) 15 2019 Hyundai Veloster Turbo (,500) 14 2018 Hyundai Elantra GT Sport (,250) How many feet is 8 miles? In 8 mi there are 42240 ft Which is the same to say that 8 miles is 42240 feet What is 1/8th called? Octagon This octagon has been divided into 8 equal triangles One triangle is one eighth How many minutes is 8 miles? How Many Minutes is 8 Miles? – 8 minutes is how long it takes to drive 8 miles at a speed of 60 mph What is 1/8 as a decimal? To convert 1/8 to a decimal, divide the denominator into the numerator 1 divided by 8 = 125 How do you calculate a mile? Now that you know the stride of your step in feet, you can calculate a mile There are 5,280 feet in one mile Simply divide 5,280 feet by your average stride length to learn how many steps it will take to walk a mile If your average stride length is 2 feet, for example, it will take 2,640 steps to walk a mile Is the human foot 12 inches? Your foot: An average foot is about 12 inches long Your forearm from elbow to fingertip: Your forearm is about 15 feet (46 centimeters) From nose to finger tip: The distance between your nose and your fingertip when your arm is extended is about a yard (36 inches) Which is more 6 feet or 1 yard? Performing the inverse calculation of the relationship between units, we obtain that 1 yard is 05 times 6 feet Related posts: Question: How Long Does It Take To Jog A Mile Question: How To Run A Faster 3 Mile How Many Calories Does Bike Riding Burn Per Mile Quick Answer: How Many Calories You Burn Per Mile Quick Answer: How Many Calories Do I Burn When Running A Mile How Many Points Per Mile Southwest Quick Answer: How To Run A Good Mile Question: How Many Steps On Stairmaster Is A Mile How Long Is A 7 Mile Bike Ride How Long Should A Mile Run Take Quick Answer: How Long Does It Take To Bike 1 Mile On An Assault Bike Quick Answer: How To Run A Mile In 4 Minutes Quick Answer: How To Run A Faster Mile Tomorrow What Can Running A Mile A Day Do For You Question: How Many Carbs Do You Burn Walking A Mile How Many Yards In A Quarter Mile Swim Quick Answer: How Fast Is The Crow In A Quarter Mile Question: How Long Is A 5 Mile Drive How Many Flights Of Stairs Is A Mile Quick Answer: Is A 2 Mile Bike Ride Good
- Table of Contents:
How long is an 8th of a mile
What is 18 of a mile called
What makes up 1 mile
What’s the fastest 14 mile time ever
How long does 8 miles take to walk
What is 38 in a decimal
How many feet is 100th of a mile
What things are 8 inches
Is 05 miles half a mile
What car has the fastest 14 mile time
How many feet makes up 1 mile
Who holds the mile world record
What is the fastest 18 mile time
What is the fastest 14 mile time for a street legal car
How many feet is 4 miles
What is 78 into a decimal
How fast can a Tesla do a 18 Mile
Which is longer quarter mile or eighth mile
Why is a foot divided into 12 inches
How fast is an 8 second car
What cars do 0 60 in 7 seconds
How many feet is 8 miles
What is 18th called
How many minutes is 8 miles
What is 18 as a decimal
How do you calculate a mile
Is the human foot 12 inches
Which is more 6 feet or 1 yard
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What Does Drag Strip Mean? How Long is a Drag Strip? |
Have you ever considered going to a drag strip but didn’t know what it really meant or what it entailed? Well, there are plenty of things to think about before you decide to head out and watch a race or get involved in one. That’s why we’re going to take a look at what drag strips really are and what you should know about them.
What Does Drag Strip Mean?
A drag strip is a straight section of road that is used for drag racing. The strip is a generally paved track or it could be a traditionally paved road but it must be straight so that the vehicles can be allowed to ‘drag’ over it without the need for corners or added potential for injury.
Drag strips are designed to give people the opportunity to watch or even engage in a completely different type of racing that’s all about the adrenaline rush. In many states and areas, these types of races are entirely illegal and are often a type of ‘street racing.’ This means that some people do not perform it on an official track but rather on any street that they can with a long and narrow lane.
How Wide is a Drag Strip?
An official drag strip requires at least 25 feet for each lane. While drag strips can, theoretically, be only one lane with measurements taken, they are typically at least two lanes wide. Some strips may even have a total of four lanes for drivers.
Official drag strips have these measurements to ensure that the track is safe and that people who are racing will be able to easily stop their vehicle before reaching the end of the track. Unofficial drag racing that occurs primarily on public roadways do not often have these requirements and may have any width or length of the strip. This can be highly dangerous as it does not provide adequate room for vehicles to drive side-by-side or stop safely.
What is the Length of a Drag Strip?
There are several different lengths available for drag strips. In fact, an unofficial drag strip could be any length, but in most cases, you will see strips that are 1,000 feet, 1/8 mile, or ¼ mile. These are generally the professional tracks and host official drag racing events.
Drag strips that are ¼ mile are approximately 1,320 feet or 402 meters while 1/8 mile comes out to only 660 feet or 201 meters. In the middle are 1000 foot tracks that are approximately 305 meters in total length. Each of these strips is designed with a braking area and an emergency area on top of the total length of the track that is being raced. The lengths above are only the length of the track, not the length of the additional distance needed.
Why Did Drag Racing Go to 1000 Feet?
Drag racing was initially changed to 1000 feet because of the death of a racer in 2008. The decision was made so that the end of the race would occur with more space at the end for racers to slow down before the track ends.
There are a few distinct reasons that the NHRA chose to shorten the trackway, which primarily focuses on the death of a man named Scott Kalitta. A longer braking area may have been able to assist and a slower speed coming around the final corner as well. With the high insurance costs and potential liability, the organization chose to change the distance, though they have also considered increasing the distance back to the previous levels.
How Long Does a 1/4 Mile Drag Strip Need to Be?
A standard drag race is approximately ¼ of a mile or 1,320 feet. This does not include the length of the braking and emergency areas. This ‘shutdown area’ is designed to be more than 700 meters (which is only the length of the braking area).
A standard drag race is 1,320 feet or ¼ mile with 0.2% to follow FIA and NHRA rules. This does not include an additional distance for braking and emergency area, though these are often regulated locally or environmentally rather than by set standards. These areas are essential to ensure that vehicles are able to stop within a safe distance after the race.
How Much Would it Cost to Build a 1/4 Mile Drag Strip?
If you were looking to build your own drag strip, especially one that is ¼ mile long, you would need somewhere between 1 million and 4 million in order to install it. You would also need at least 1 million of coverage for insurance purposes and then would need more money to maintain it.
What Drag Strip Has 4 Lanes?
The zMAX Dragway has 4 lanes and is actually the only four-lane, concrete drag strip available anywhere. You’ll find everything that you would expect from any other drag strip, but with four vehicles going at the same time instead of only two.
Why Are Drag Strips So Sticky?
Drag strips are sticky because they use a special compound to allow for the most impressive launch. This material is typically PJ1 TrackBite or was once known as VHT. It’s designed to get vehicles with large horsepower to achieve a more impressive showing that could otherwise be a bit difficult.
There are some other materials that can be used and may be used on smaller tracks but this is the official version for professional tracks. Also, those who do drag racing on public streets will not have this type of material and use only the standard surface of the road for their races.
Conclusion
When it comes to drag racing there are a number of factors to consider if you are thinking about racing or even going to watch a race. For those considering starting their own drag strip, there is, even more, to think about, including the size and the materials to do it.
Reference
https://www.dailynews.com/2013/11/09/nhra-debate-rages-on-1000-vs-traditional-1320-feet/
Dragstrip
Car racing facility
For other uses, see Drag strip
Looking down a drag strip. Note the Christmas tree countdown lights in the center
Drag racing vehicles ready to race
Bring your own cars waiting to run down the dragstrip
Snowmobile vs. Motorcycle
A dragstrip is a facility for conducting automobile and motorcycle acceleration events such as drag racing. Although a quarter mile (1320 feet, 402 m) is the best known measure for a drag track, many tracks are eighth mile (201 m) tracks, and the premiere classes will run 1,000 foot (304.8 m) races. The race is begun from a standing start which allows three factors to affect the outcome of the race: reaction time, power/weight ratio, and traction.
Features [ edit ]
A dragstrip is a straight, purpose-built racetrack, typically an eighth, ten feet longer than three-sixteenths, or a quarter of a mile long (660/1,000/1320 feet, 201/304.8/402 m), with an additional shutdown area to allow vehicles room to stop after crossing the finish line. Common features also include a ‘water box’ where vehicles and motorcycles start their burnouts for tire clean-up and also to heat up their tires to improve traction. There is a set of lights known as a ‘Christmas Tree’ that counts down to the start. There are also return lanes for the vehicles to return from the end of the track to the pit area.
Vehicle equipment requirements [ edit ]
Like all other motorsports, drag racing has many safety requirements for the vehicles that compete. These can be found in the applicable governing body’s rule book. Most rules do not apply until the vehicle exceeds a specified time, such as 10.99 seconds. This allows anyone with a regular production vehicle to take part for very little cost, and encourages participation of many people who cannot afford a proper racing vehicle. The grassroots efforts are primarily bracket racing cars. Many classes allow drivers to drive their street cars and participate in an event.
Dragstrip locations [ edit ]
Quarter mile times [ edit ]
Acceleration times differ even between identical vehicles due to widely varying factors – vehicle tune, elevation, driver/rider differences, payload, track surface conditions, weather conditions.
NOTE: Nitro Funny Car records set at 1,000 ft (300 m), which since 2008 in the US by NHRA, 2012 internationally by FIA, and 2017 in Australia by IHRA is the official distance for both Top Fuel and Funny Car in the respective sanctioning bodies.
All official records must be backed up within one percent during the same race meet in order to be claimed. The official records for terminal velocity and elapsed time are different in the professional car categories, and only the elapsed time run (and respective speed of that run) is listed. There have been some cases where a car has run faster than the official record, but because they were not backed up within one percent during the same meet, they are not recognised by the NHRA, IHRA, or FIA. The Top Fuel record listed as the final quarter-mile record in IHRA prior to off-season rule change at the end of 2016-17 season that shortened Top Fuel to 1,000 feet.
See also [ edit ]
Wikipedia
Unit of length equal to 660 feet or about 201 metres
Furlong Unit system imperial/US units Unit of length Conversions 1 furlong in … … is equal to … imperial/US units 220 yd metric (SI) units 201.1680 m
The rod is a historical unit of length equal to 5 + 1 ⁄ 2 yards. It may have originated from the typical length of a mediaeval ox-goad. There are 4 rods in one chain. The furlong (meaning furrow length) was the distance a team of oxen could plough without resting. This was standardised to be exactly 40 rods or 10 chains. An acre was the amount of land tillable by one man behind one ox in one day. Traditional acres were long and narrow due to the difficulty in turning the plough and the value of river front access. An oxgang was the amount of land tillable by one ox in a ploughing season. This could vary from village to village, but was typically around 15 acres. A virgate was the amount of land tillable by two oxen in a ploughing season. A carucate was the amount of land tillable by a team of eight oxen in a ploughing season. This was equal to 8 oxgangs or 4 virgates. Farm-derived units of measurement:
A furlong is a measure of distance in imperial units and United States customary units equal to one eighth of a mile, equivalent to 660 feet, 220 yards, 40 rods, 10 chains or approximately 201 metres. It is now almost obsolete, except in horse racing, where in many countries it is the standard measurement of race lengths.
In the United States, some states use older definitions for surveying purposes, leading to variations in the length of the furlong of two parts per million, or about 0.4 millimetre ( 1⁄64 inch). This variation is too small to have practical consequences in most applications.
Using the international definition of the yard as exactly 0.9144 metres, one furlong is 201.168 metres and five furlongs are about 1 kilometre ( 1.00584 km exactly).
History [ edit ]
The name furlong derives from the Old English words furh (furrow) and lang (long).[1] Dating back at least to early Anglo-Saxon times, it originally referred to the length of the furrow in one acre of a ploughed open field (a medieval communal field which was divided into strips). The furlong (meaning furrow length) was the distance a team of oxen could plough without resting. This was standardised to be exactly 40 rods or 10 chains. The system of long furrows arose because turning a team of oxen pulling a heavy plough was difficult. This offset the drainage advantages of short furrows and meant furrows were made as long as possible. An acre is an area that is one furlong long and one chain (66 feet or 22 yards) wide. For this reason, the furlong was once also called an acre’s length,[2] though in modern usage an area of one acre can be of any shape. The term furlong, or shot, was also used to describe a grouping of adjacent strips within an open field.[3]
Among the early Anglo-Saxons, the rod was the fundamental unit of land measurement. A furlong was 40 rods; an acre 4 by 40 rods, or 4 rods by 1 furlong, and thus 160 square rods; there are 10 acres in a square furlong. At the time, the Saxons used the North German foot, which was about 10 percent longer than the foot of the international 1959 agreement. When England changed to a shorter foot in the late 13th century, rods and furlongs remained unchanged, since property boundaries were already defined in rods and furlongs. The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and square yards in an acre. The definition of the rod went from 15 old feet to 16+1⁄2 new feet, or from 5 old yards to 5+1⁄2 new yards. The furlong went from 600 old feet to 660 new feet, or from 200 old yards to 220 new yards. The acre went from 36,000 old square feet to 43,560 new square feet, or from 4,000 old square yards to 4,840 new square yards.[4]
The furlong was historically viewed as being equivalent to the Roman stade (stadium),[5] which in turn derived from the Greek system. For example, the King James Bible uses the term “furlong” in place of the Greek stadion, although more recent translations often use miles or kilometres in the main text and give the original numbers in footnotes.
In the Roman system, there were 625 feet to the stadium, eight stadia to the mile, and three miles to the league. A league was considered to be the distance a man could walk in one hour, and the mile (from mille, meaning “thousand”) consisted of 1,000 passus (paces, five feet, or double-step).
After the fall of the Western Roman Empire, medieval Europe continued with the Roman system, which the people proceeded to diversify, leading to serious complications in trade, taxation, etc. Around the year 1300, by royal decree England standardized a long list of measures. Among the important units of distance and length at the time were the foot, yard, rod (or pole), furlong, and the mile. The rod was defined as 5+1⁄2 yards or 16+1⁄2 feet, and the mile was eight furlongs, so the definition of the furlong became 40 rods and that of the mile became 5,280 feet (eight furlongs/mile times 40 rods/furlong times 16+1⁄2 feet/rod).
A description from 1675 states, “Dimensurator or Measuring Instrument whereof the mosts usual has been the Chain, and the common length for English Measures four Poles, as answering indifferently to the Englishs Mile and Acre, 10 such Chains in length making a Furlong, and 10 single square Chains an Acre, so that a square Mile contains 640 square Acres.” —John Ogilby, Britannia, 1675
The official use of the furlong was abolished in the United Kingdom under the Weights and Measures Act 1985, an act that also abolished the official use of many other traditional units of measurement.
Use [ edit ]
Present-day use of furlongs on a highway sign near Yangon
Mileposts on the Yangon–Mandalay Expressway use miles followed by furlongs
In Myanmar, furlongs are currently used in conjunction with miles to indicate distances on highway signs. Mileposts on the Yangon–Mandalay Expressway use miles and furlongs.
In the rest of the world, the furlong has very limited use, with the notable exception of horse racing in most English-speaking countries, including Canada and the United States. The distances for horse racing in Australia were converted to metric in 1972,[6] but in the United Kingdom,[7] Ireland, Canada, and the United States, races are still given in miles and furlongs. Also distances along the canals in English navigated by narrowboats are commonly expressed in miles and furlongs.
The city of Chicago’s street numbering system allots a measure of 800 address units to each mile, in keeping with the city’s system of eight blocks per mile. This means that every block in a typical Chicago neighborhood (in either north–south or east–west direction but rarely both) is approximately one furlong in length. Salt Lake City’s blocks are also each a square furlong in the downtown area. The blocks become less regular in shape farther from the center, but the numbering system (800 units to each mile) remains the same everywhere in Salt Lake County. Blocks in central Logan, Utah, and in large sections of Phoenix, Arizona, are similarly a square furlong in extent (eight to a mile, which explains the series of freeway exits: 19th Ave, 27th, 35th, 43rd, 51st, 59th …). City blocks in the Hoddle Grid of Melbourne are also one furlong in length.
Much of Ontario, Canada, was originally surveyed on a ten-furlong grid, with major roads being laid out along the grid lines. Now that distances are shown on road signs in kilometres, these major roads are almost exactly two kilometres apart. The exits on highways running through Toronto, for example, are generally at intervals of two kilometres.[8][9]
The furlong is also a base unit of the humorous FFF system of units.[10]
Definition of length [ edit ]
The exact length of the furlong varies slightly among English-speaking countries. In Canada[11] and the United Kingdom,[12] which define the furlong in terms of the international yard of exactly 0.9144 metres, a furlong is 201.168 m. Australia[13] does not formally define the furlong, but it does define the chain and link in terms of the international yard.
In the United States, which defines the furlong, chain, rod, and link in terms of the U.S. survey foot of exactly 1200⁄3937 metre,[14] a furlong is approximately 201.1684 m long. The United States does not formally define a “survey yard”. The difference of approximately two parts per million between the U.S. value and the “international” value is insignificant for most practical measurements.
In October 2019, U.S. National Geodetic Survey and National Institute of Standards and Technology announced their joint intent to retire the U.S. survey foot, with effect from the end of 2022. The furlong in U.S. Customary units is thereafter defined based on the International 1959 foot, giving the length of the furlong as exact 201.168 meters in the United States as well.[15][16]
See also [ edit ]
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