Qhov no steel bar nrog cov kab ntawm nws yog sib sau ua ke hu ua "deformed steel bar", tseem hu ua "ribbed steel bar", uas sib raug rau "lub teeb puag ncig steel bar" tsis muaj kab. Cov qauv no yog hu ua "transverse rib", thiab cov duab ntawm cov kab hla hla yog muab kauv, herringbone thiab crescent.
Lub transverse ribs ntawm steel bar yog siv los txhim kho kev sib raug zoo ntawm steel bar thiab cov pob zeb, thiab kom zoo dua kev hloov kev ntxhov siab. Cias muab, nws yog ua kom cov hlau bar thiab cov pob zeb ua haujlwm zoo dua hauv kev sib koom tes thiab sib koom ua ke dais sab nraud.
Qhov kev pom ntawm tus ntoo khaub lig-rib bar nrog crescent qauv ntawm ob sab, koj tuaj yeem pom vim li cas nws thiaj li hu ua "Crescent shape":
