Taarikada birta waxay u qaybsan yihiin laba nooc: taargooyin khafiif ah iyo taarikada qaro weyn. Saxanka birta khafiifka ah
Xaashiyaha birta ah ayaa loo qaybiyaa kuleyl kulul oo qabow oo loo rogay sida lagu duubay.
Saxanka birta khafiifka ah waa saxan bir ah oo dhumuc weyn leh 0.2-4mm oo ay soo saartay duudduub ama qabow. Ballaca saxanka birta khafiifka ah ayaa u dhexeeya 500-1800mm. Ka sokow gaarsiinta tooska ah ka dib markii la duubo, go'yaasha birta khafiifka ah ayaa sidoo kale la jeexjeexay, galka loo qaaday oo la tuuray. Marka loo eego adeegsiyo kala duwan, saxanka birta khafiifka ah ayaa laga soo rogay qaansheegashada agabyada kaladuwan iyo ballaca saxan khafiifka ah waa 500 ~ 1500 mm; Ballaca xaashida qaro weyn waa 600 ~ 3000 mm. Go'da waxaa loo kala saaraa qaybaha birta, oo ay ku jiraan birta caadiga ah, birta tayo sare leh, bir bir ah, bir bir ah, bir bir ah, bir bir ah, iwm .; Marka loo eego isticmaalka xirfadeed, waxaa jira taargooyin saliid saliid ah, taarikada dhalmada, saxarada rasaasta, iwm .; Marka loo eego daboolida dusha sare, waxaa jira xaashi xaashi ah, xaashi xaashi ah, xaashi xaashi ah, xaashi xaashi ah, bac balaastig ah, iwm.
Saxarka qaro weyn ee birta waa erey guud oo loogu talagalay taarikada birta leh dhumuc weyn oo ka badan 4mm. Shaqo la taaban karo, taarikada birta leh oo leh dhumuc ka yar 20mm ayaa badanaa loo yaqaan taarikada dhexdhexaadka ah, taarikada birta leh dhumucda qaro weyn, iyo taarikada birta leh dhumuc weyn oo leh - 60mm waxay u baahan yihiin in la duubo Milkiil culus oo culus, sidaa darteed waxaa loo yaqaanaa saxan culus oo dheeraad ah. Ballaca saxanka birta qaro weyn waa 1800mm-4000mm. Taargooyin qaro weyn ayaa loo qaybiyaa taarikada birta ah, taarikada biriiga biriiga, taarikada birta ceelka ah, taarikada birta saliida leh, taarikada birta, taarikada birta, taarikada birta ee gawaarida, iyo taarikada birta ee loo yaqaan 'steel steel' iyo isticmaalkooda si ay u adeegsadaan isticmaalkooda. Fasalka birta ee saxanka qaro weyn ee birta qaro weyn ayaa guud ahaan la mid ah tan tiirka birta khafiifka ah. Marka laga hadlayo badeecadaha, marka lagu daro taarikada biriiga biriiga, taarikada birta ceelka ah, taarikada birta ee saxarada, oo ah taarikada sawlka saliida badan, kuwaas oo ah taarikada qaro weyn ee saafiga ah, oo ah noocyo bir ah sida gawaarida birta ah Taargooyinka birta ah ee birta ah
