This discussion was on the Clare List and i though people on the Tyrone List may be interested -----Original Message----- From: Atchison [mailto:atchis1@ihug.co.nz] Sent: Monday, January 19, 2009 6:03 PM To: 'Cara_Links'; 'irl-clare@rootsweb.com' Subject: RE: [IRL-CLARE] Irish Acre Definition Acres I have checked the Griffiths and it appears that the Griffiths used the English or Imperial measurement and not the Irish Plantation measurement. Source is http://www.leitrim-roscommon.com/GRIFFITH/Griffiths.PDF So one "Griffiths" acre = 4,840 square yards This equates to 43,560 sq ft I am assuming, though I can't be sure that an American acre measurement is the same as the Imperial measurement. Can someone please confirm this. The reason I ask, is because an American gallon is smaller than the correct imperial gallon Similarly there are only 2000 lbs in a American Ton, where as there are 2240 lbs in an Imperial ton which is/was used as the measurement for the UK and the British Commonwealth. For some reason America chose to a different way thereby creating confusion for everyone. I know when we are exporting to the US we have to be certain what measurement we are using. The rest of the world is easy because we use the metrics. So lets revisit English Acres Irish Metric 1 Acre is 4840 yds2 7,840 yds2 1 Acre is 43,560 ft2 70,560 ft2 1 acre .40469 ha .65553 ha 1 hectare 1 hectare is 2.4710 acres 1.5255 acre 1 hectare is 100 metres x 100 metres 10,000m2 The Imperial calculations are based from the link. A surveyors chain was a 100 links, thereby the term chain. The base for all this is the link which is 7.92 imperial inches There are 100 links in a chain which is 22 yards (the length of a cricket pitch) or 66 feet There are 10 chains in a furlong which is 220 yards (a furlong was the measurement used in horse racing) There are 8 furlongs in a mile which is 1,760 yards or 5,280 feet 1 square chain is 484 yds2 or 4,356 ft2 1 acre is 10 square chains 4,840 yds2 or 43,560 ft2 There are 4 roods to acre 1 rood is 1,210 yds2 There are 40 perches to a rood 1 perch is 30.25yds2 There are 640 acres per square mile 640 I have found this very interesting as we have had metrics since 1967 onwards. But I still remember the basics of imperial measurements even Pound, shillings and pence and of course guineas. Regards Cunningham Atchison Auckland, NZ -----Original Message----- From: irl-clare-bounces@rootsweb.com [mailto:irl-clare-bounces@rootsweb.com] On Behalf Of Cara_Links Sent: Monday, January 19, 2009 4:37 PM To: irl-clare@rootsweb.com Subject: Re: [IRL-CLARE] Irish Acre Definition >From Wikipedia, the free encyclopedia An Irish acre is a unit of area historically used in Irealnd One Irish acre is equal to, 7,840 square yards, or 70,560 square feet. The difference between the Irish acre and the statute acre arises from the fact that the Irish mile is 14-11 miles (1.273 mi or ~ 2km). Whereas a one-acre area ten times as long as wide would have dimensions of 66 feet × 660 feet, the Irish acre of that shape would have dimensions of 84 feet × 840 feet. ----- Original Message ----- From: <RobinVanM@aol.com> To: <IRL-CLARE@rootsweb.com> Sent: Monday, January 19, 2009 2:55 AM Subject: [IRL-CLARE] Irish Acre Definition > What was the size (in square feet) of an acre in Griffith's Property > Valuation? > Robin in Maryland
If anyone is interested in pursuing the American acre in contrast to English/Irish/Griffiths measurements. I found the original posts most interesting and informative. Denis The acre is a unit of area in a number of different systems, including the imperial and U.S. customary systems. The most commonly used acres today are the international acre and, in the United States, the survey acre. One international acre is equal 4046.8564224 m2. One U.S. survey acre is equal to 62,726,400,000⁄15,499,969 m2 = 4046.8726098 m2. One acre comprises 4,840 square yards or 43,560 square feet[1] (which can be easily remembered as 44,000 square feet, less 1%). Because of alternative definitions of a yard or a foot, the exact size of an acre also varies slightly. Originally, an acre was a selion of land one furlong (660 ft) long and one chain (66 ft) wide; the measure appears to have begun as an approximation of the amount of land an ox could plow in one day. However, an acre is a measure of area, and has no particular width, length or shape. The acre is often used to express areas of land. In the metric system, the hectare is commonly used for the same purpose. An acre is approximately 40% of a hectare. One acre is 90.75 yards of a 53.33-yard-wide American football field. The full field, including the end zones, covers approximately 1.32 acres. On Jan 19, 2009, at 12:05 AM, Atchison wrote: > This discussion was on the Clare List and i though people on the > Tyrone List > may be interested > > -----Original Message----- > From: Atchison [mailto:atchis1@ihug.co.nz] > Sent: Monday, January 19, 2009 6:03 PM > To: 'Cara_Links'; 'irl-clare@rootsweb.com' > Subject: RE: [IRL-CLARE] Irish Acre Definition > > Acres > > I have checked the Griffiths and it appears that the Griffiths used > the > English or Imperial measurement and not the Irish Plantation > measurement. > > Source is http://www.leitrim-roscommon.com/GRIFFITH/Griffiths.PDF > > So one "Griffiths" acre = 4,840 square yards > This equates to 43,560 sq ft > > I am assuming, though I can't be sure that an American acre > measurement is > the same as the Imperial measurement. Can someone please confirm > this. The > reason I ask, is because an American gallon is smaller than the > correct > imperial gallon > > Similarly there are only 2000 lbs in a American Ton, where as there > are 2240 > lbs in an Imperial ton which is/was used as the measurement for the > UK and > the British Commonwealth. For some reason America chose to a > different way > thereby creating confusion for everyone. I know when we are > exporting to the > US we have to be certain what measurement we are using. The rest of > the > world is easy because we use the metrics. > > > So lets revisit > English Acres > Irish Metric > 1 Acre is 4840 yds2 > 7,840 yds2 > 1 Acre is 43,560 ft2 > 70,560 ft2 > 1 acre .40469 ha > .65553 ha 1 hectare > 1 hectare is 2.4710 acres 1.5255 acre > > 1 hectare is 100 metres x 100 metres > 10,000m2 > > > The Imperial calculations are based from the link. A surveyors > chain was a > 100 links, thereby the term chain. > The base for all this is the link which is 7.92 imperial inches > There are 100 links in a chain which is 22 yards (the > length of a cricket pitch) or 66 feet > There are 10 chains in a furlong which is 220 yards > (a furlong was the measurement used in horse racing) > There are 8 furlongs in a mile which is 1,760 yards or > 5,280 feet > > 1 square chain is 484 yds2 > or 4,356 ft2 > 1 acre is 10 square chains 4,840 yds2 or > 43,560 ft2 > There are 4 roods to acre > 1 rood is 1,210 yds2 > > There are 40 perches to a rood > 1 perch is 30.25yds2 > > There are 640 acres per square mile 640 > > > > I have found this very interesting as we have had metrics since 1967 > onwards. But I still remember the basics of imperial measurements even > Pound, shillings and pence and of course guineas. > > Regards > > Cunningham Atchison > Auckland, NZ > > > > > -----Original Message----- > From: irl-clare-bounces@rootsweb.com [mailto:irl-clare- > bounces@rootsweb.com] > On Behalf Of Cara_Links > Sent: Monday, January 19, 2009 4:37 PM > To: irl-clare@rootsweb.com > Subject: Re: [IRL-CLARE] Irish Acre Definition > >> From Wikipedia, the free encyclopedia > An Irish acre is a unit of area historically used in Irealnd > One Irish acre is equal to, 7,840 square yards, or 70,560 square feet. > > The difference between the Irish acre and the statute acre arises > from the > fact that the Irish mile is 14-11 miles (1.273 mi or ~ 2km). Whereas a > one-acre area ten times as long as wide would have dimensions of 66 > feet × > 660 feet, the Irish acre of that shape would have dimensions of 84 > feet × > 840 feet. > > > ----- Original Message ----- > From: <RobinVanM@aol.com> > To: <IRL-CLARE@rootsweb.com> > Sent: Monday, January 19, 2009 2:55 AM > Subject: [IRL-CLARE] Irish Acre Definition > > >> What was the size (in square feet) of an acre in Griffith's Property >> Valuation? >> Robin in Maryland > > > > > ------------- > Our community web-site: http://freepages.genealogy.rootsweb.com/ > ~cotyroneireland > > > ------------------------------- > To unsubscribe from the list, please send an email to > COTYRONEIRELAND-request@rootsweb.com with the word 'unsubscribe' > without the quotes in the subject and the body of the message