The rai,[a]ngan,[b] and tarang wa or square wa[c] are customary Thai units of area, used in the measurement of land. They are defined as exactly 1,600, 400, and 4 square metres, respectively (17,222, 4,306, and 43 sq ft).[1]
The tarang wa (square wa, tarang meaning 'grid') is derived from the area of a square with sides of 1 wa (the Thai fathom). One ngan is equal to 100 square wa, and one rai ('field' or 'plantation') equals 4 ngan or 1 square sen.[1] The units were standardized in square metres when Thailand (then Siam) adopted the metric system in 1923,[2][3] although the Royal Survey Department was already reported in 1908 to be using the metre-based conversion for its cadastral maps.[4]
The units are commonly used for cadastre and property matters, and official and legal documents express areas of land in such units.[5] They are sometimes notated in the abbreviated format rai-ngan-tarang wa, e.g. "4-2-25 rai", which means "4 rai, 2 ngan, and 25 tarang wa", though this is discouraged by some government documents.[6]
^ abCommercial Directory for Thailand B.E. 2496-97 (1953-54) (in Thai and English). Department of Commercial Intelligence, Ministry of Economic Affairs. 1953. p. 3-11.
^Bureau of Weights and Measures. "ประวัติการชั่งตวงวัดของประเทศไทย". In จรินทร สุทธนารักษ์; สาธิต ชูสุวรรณ (eds.). นานาสาระชั่งตวงวัด(PDF) (in Thai). Central Bureau of Weights and Measures.
^. Northern Weights and Measures Center. 2004. Archived from the original on 22 February 2020.
^Wright, Arnold; Breakspear, Oliver T. (1908). Twentieth century impressions of Siam: its history, people, commerce, industries, and resources, with which is incorporated an abridged edition of Twentieth century impressions of British Malaya. London [etc.] Lloyds Greater Britain Publishing Company, Ltd. p. 126.
^สำนักงานบริหารโครงการพัฒนากรมที่ดิน และเร่งรัดการออกโฉนดที่ดินทั่วประเทศ (September 2011). "คำศัพท์ภาษาอังกฤษด้านการที่ดิน (Terminology of the Department of Lands)" (PDF) (in Thai and English). Department of Lands. Retrieved 7 January 2024.
^"คำสั่งจังหวัดเชียงใหม่ ที่ 1/2528 เรื่อง แก้ไข (เนื้อที่ รูปแผนที่ หรือเนื้อที่และรูปแผนที่) ในโฉนดที่ดิน" (PDF) (in Thai). Department of Interior. 1985. Retrieved 7 January 2024. หมายเหตุ การเขียนเนื้อที่ 6 ไร่ 3 งาน 06 ตารางวา ไม่ควรเขียนเป็น 6-3-06 ไร่
February 16, 2024
ngan, tarang, ngan, tarang, square, customary, thai, units, area, used, measurement, land, they, defined, exactly, square, metres, respectively, tarang, square, tarang, meaning, grid, derived, from, area, square, with, sides, thai, fathom, ngan, equal, square,. The rai a ngan b and tarang wa or square wa c are customary Thai units of area used in the measurement of land They are defined as exactly 1 600 400 and 4 square metres respectively 17 222 4 306 and 43 sq ft 1 The tarang wa square wa tarang meaning grid is derived from the area of a square with sides of 1 wa the Thai fathom One ngan is equal to 100 square wa and one rai field or plantation equals 4 ngan or 1 square sen 1 The units were standardized in square metres when Thailand then Siam adopted the metric system in 1923 2 3 although the Royal Survey Department was already reported in 1908 to be using the metre based conversion for its cadastral maps 4 The units are commonly used for cadastre and property matters and official and legal documents express areas of land in such units 5 They are sometimes notated in the abbreviated format rai ngan tarang wa e g 4 2 25 rai which means 4 rai 2 ngan and 25 tarang wa though this is discouraged by some government documents 6 Unit conversions Unit Derivation Relative SI or other metric US customaryTarang wa Square wa 4 m2 43 sq ftNgan 100 tarang wa 400 m2 4 306 sq ftRai Square sen 4 ngan or 400 tarang wa 1 600 m2 16 ares 17 222 sq ft 0 4 acres Notes edit Thai ir pronounced raj Also spelled ngaan ngan ŋɑ ːn Also tarang wah or square wah tarangwa tɑ ː rɑ ːŋ wɑ ː References edit a b Commercial Directory for Thailand B E 2496 97 1953 54 in Thai and English Department of Commercial Intelligence Ministry of Economic Affairs 1953 p 3 11 Bureau of Weights and Measures prawtikarchngtwngwdkhxngpraethsithy In crinthr suththnarks sathit chusuwrrn eds nanasarachngtwngwd PDF in Thai Central Bureau of Weights and Measures History of Weights and Measures in Thailand Northern Weights and Measures Center 2004 Archived from the original on 22 February 2020 Wright Arnold Breakspear Oliver T 1908 Twentieth century impressions of Siam its history people commerce industries and resources with which is incorporated an abridged edition of Twentieth century impressions of British Malaya London etc Lloyds Greater Britain Publishing Company Ltd p 126 sanknganbriharokhrngkarphthnakrmthidin aelaerngrdkarxxkochndthidinthwpraeths September 2011 khasphthphasaxngkvsdankarthidin Terminology of the Department of Lands PDF in Thai and English Department of Lands Retrieved 7 January 2024 khasngcnghwdechiyngihm thi 1 2528 eruxng aekikh enuxthi rupaephnthi hruxenuxthiaelarupaephnthi inochndthidin PDF in Thai Department of Interior 1985 Retrieved 7 January 2024 hmayehtu karekhiynenuxthi 6 ir 3 ngan 06 tarangwa imkhwrekhiynepn 6 3 06 ir Retrieved from https en wikipedia org w index php title Rai ngan and tarang wa amp oldid 1202760269, wikipedia, wiki, book, books, library,
