Dhuumaha birta tolmoonka toosan waa tuubbo bir ah oo tollaynteeda alxanka ay la siman tahay jihada dheer ee tuubada birta.Habka wax soo saarka ee birta birta ah ee tooska ah waa mid fudud, oo leh wax-soo-saarka sare, qiimo jaban iyo horumar degdeg ah.Awoodda tuubooyinka alxanka leh ee wareegsan ayaa guud ahaan ka sarreeya kuwa tolmada toosan ee tuubooyinka alxanka leh.
Tuubooyinka birta ee tollayn toosan ayaa loo qaybin karaaDhuumaha birta ee ERWiyo dhuumo bir ah oo tol ah oo toosanDhuumaha LSAW) iyadoo loo eegayo habka wax soo saarka.
Dhererka birta tollayn toosan sida caadiga ah waa 6000 mm-1200 mm.
Tuubbada wareega ee ERW: 21.3mm ilaa 508mm;Dhuumaha wareega LSAW: 406mm ilaa 2020mm
Waqtiga boostada: Jan-21-2022