In Ancient Rome, the Aqua Alsietina (sometimes called Aqua Augusta ) was the earlier of the two western Roman aqueducts (with the aqua Traiana ), erected sometime around 2 BC, during the reign of emperor Augustus . It was the only water supply for the Transtiberine region, on the right bank of the river Tiber until the Aqua Traiana was built.
13-514: The length of this mainly subterranean aqueduct was 22000 paces (about 32.8 km) and it had arches over 358 paces (about 0.53 km). This aqueduct acquired water mainly from Lacus Alsietinus (a small lake in southern Etruria , currently known as Lago di Martignano) and some from Lacus Sabatinus (Lago di Bracciano). This water was not suitable for drinking, however, and Augustus used it to fill his naumachia in Trastevere to allow
26-507: A man can reach in either direction with an ox-goad as long as the long yoke (16 Welsh feet) and its length "thirty times that measure" —is noted by Owen as ambiguous. He finds it more likely, however, that the "measure" to be multiplied thirty times is the width of the acre (that is, two long yokes) rather than a single long yoke. Thus, at least in theory, although in fact the commutes and cantrefs were fixed political entities with quite various sizes. The 11th-century Bleddyn ap Cynfyn
39-485: A typical brisk or military marching stride. In the United States the pace is an uncommon customary unit of length denoting a brisk single step and equal to 2 + 1 ⁄ 2 feet or 30.0 inches or 76.2 centimetres . The Ancient Roman pace ( Latin : passus ) was notionally the distance of a full stride from the position of one heel where it raised off of the ground to where it set down again at
52-646: Is a stub . You can help Misplaced Pages by expanding it . This Ancient Rome –related article is a stub . You can help Misplaced Pages by expanding it . Welsh units Welsh units of measurement are those in use in Wales between the Sub-Roman period (prior to which the Britons used Roman units ) and the 13th-century Edwardian conquest (after which English units were imposed). Modern Wales no longer employs these units even for customary purposes but instead follows
65-419: Is a unit of length consisting either of one normal walking step (approximately 0.75 metres or 30 inches), or of a double step, returning to the same foot (approximately 1.5 metres or 60 inches). The normal pace length decreases with age and some health conditions. The word "pace" is also used for units inverse to speed, used mainly for walking and running, commonly minutes per kilometer . The word "pace"
78-428: Is also described as having changed the legal composition of the homestead for purposes of inheritance and so on, varying its size depending on the social status of the owner. The homestead of a nobleman ( uchelwr ) was 12 Welsh acres, that of a serf ( Med. eyllt , Mod. aillt ) had 8, and that of a bondsman or slave ( Med. godayauc ) had 4. The text, however, notes
91-423: Is also used to translate similar formal units in other systems of measurement. Pacing is also used as an informal measure in surveying , with the "pace" equal to two of the surveyor's steps reckoned through comparison with a standard rod or chain . Like other traditional measurements, the pace started as an informal unit of length , but was later standardized, often with the specific length set according to
104-592: The custom as elsewhere in Britain of using a mixture of metric and Imperial units . In the Venedotian Code used in Gwynedd , the units of length were said to have been codified by Dyfnwal Moelmud but retained unchanged by Hywel Dda . The code provided for computing the units variously, as well as deriving them from grains of barley. In measuring milk and its legal worth ( teithi ), disputes over
117-514: The end of the step: two steps, one by each foot. Under Marcus Vipsanius Agrippa , it was standardized as the distance of two steps ( gradūs ) or five Roman feet ( pedes ), about 1.48 meters or 4 feet 10 inches. One thousand paces were described simply as mille passus or passuum , now known as a Roman mile ; this is the origin of the English term "mile". The Byzantine pace ( ‹See Tfd› Greek : βῆμα , bḗma )
130-508: The length of the inch used in the container were to be resolved by the width of the judge's thumb. The code notes that in some areas of Wales, the rod used to compute the Welsh acre ( erw ) was not reckoned from feet but taken to be "as long as the tallest man in the [tref], with his hand above his head". In the Venedotian Code used in Gwynedd , the basic field unit was the Welsh acre or erw, whose legal description—its breadth as far as
143-521: The public to enjoy sham naval battles. The water surplus was used for the irrigation of Caesar 's horti (gardens) and for the irrigation of fields. Sextus Julius Frontinus ascribes only a meager volume to the Aqua Alsietina in about 97. It was joined by the aqua Traiana, probably in 109 AD, to share a common lower path into Rome, though their routes are uncertain. Some traces of this aqueduct were discovered in 1720. An inscribed stone slab
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#1732772589802156-570: Was an adaption of the Roman step, a distance of 2½ Greek feet . The double pace ( βῆμα διπλοῦν , bḗma diploûn ), meanwhile, was similar to the Roman unit, comprising 5 Greek feet. The Welsh pace ( Welsh : cam ) was reckoned as 3 Welsh feet of 9 inches and thus may be seen as similar to the English yard: 3 paces made up a leap and 9000 a Welsh mile . This standards - or measurement -related article
169-750: Was found in 1887 near the Via Claudia , the only ancient written record of the Aqua Alsietina. The fountain of the Acqua Paola in Rome, built under Pope Paul V announces on its triumphal arch that "Paul V restored the ancient ducts of the Aqua Alsietina". But this was wrong, in fact it was a reconstruction of the Aqua Traiana. But that was unknown by that time. 41°53′12″N 12°28′10″E / 41.88667°N 12.46944°E / 41.88667; 12.46944 Pace (length) A pace
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