Astaamahooda waxaa ka mid ah:
Awood sare: Biraha waxaa badanaa laga sameeyaa bir tayo sare leh, oo leh xoog iyo adkaysi sare waxayna u adkeysan kartaa cadaadiska culus iyo saameynta tareenada. Alxanka: Biraha waxaa lagu xiri karaa qaybo dhaadheer iyada oo loo marayo alxanka, taas oo hagaajinaysa xasilloonida guud iyo badbaadada khadka tareenka.
Heerarka birahaBadanaa waxaa dejiya Hay'adda Caalamiga ah ee Heerarka (ISO) iyo heerarka warshadaha tareenka ee waddan kasta. Waa kuwan qaar ka mid ah heerarka tareenada ee caadiga ah:
Tareenka Birta Caadiga ah ee GB, tareenka birta caadiga ah ee AREMA, tareenka birta caadiga ah ee ASTM, tareenka birta caadiga ah ee EN, tareenka birta caadiga ah ee BS, tareenka birta caadiga ah ee UIC, tareenka birta caadiga ah ee DIN, tareenka birta caadiga ah ee JIS, tareenka birta AS 1085, tareenka birta ISCOR.
Waqtiga boostada: Abriil-03-2024