Unequal lub kaum steel muaj ntau yam zoo sib txawv. Firstly, nws asymmetric cross -} TSHWM} Tshooj muab cov kev qhia sib txawv hauv ob cov kev qhia sib txuas. Qhov tshwj xeeb tshwj xeeb tso cai rau nws tau muab tso rau hauv cov qauv los ua kom zoo tshaj thauj {{3,} nqa muaj peev xwm. Piv txwv li, nyob rau hauv truss system, unequal lub kaum steel tuaj yeem taw rau hauv txoj kev uas ua kom zoo dua li sib npaug- lub kaum sab xis steel nyob rau qee cov ntawv thov.
Thib ob, tsis sib xws lub kaum steel muab cov qauv tsim qauv. Nws cov ceg sib txawv ntev pab rau cov neeg siv hluav taws xob kom tsim kev cai - Tsim tsim qauv uas haum cov kev txwv tshwj xeeb. Nyob rau hauv cov ntawv thov architectural, nws tuaj yeem siv los tsim kev sib txawv thiab ua kom zoo nkauj ua kom zoo nkauj, xws li kev tsheb nqaj hlau lossis kev sib tw- ua nkhaus. Tsis tas li ntawd, UneEqualTube yog tus nqi kuj raug nqi -}}} ua tau zoo. Piv rau qee qhov nyuaj {{7} zoo li cov txheej txheem standiles, nws yuav tsum tau cov nqi tsawg dua, ua rau muaj cov nqi qis dua. Qhov no ua rau nws pom kev txaus nyiam rau cov phiaj xwm qhov twg tus nqi siv tus nqi yog qhov tseem ceeb yam tsis muaj kev txi thiab ua haujlwm.
Lwm qhov zoo dua yog nws cov kev ua kom zoo thiab weldability. Zoo ib yam li sib luag- lub kaum steel, khoov tau yooj yim, khoov, thiab puab kom tau raws li cov qauv tsim tshwj xeeb. Nws cov tshuaj muaj kuab lom tso cai rau kev sib dhos txhim khu cov kev sib txoos ntawm ntau yam kev ua haujlwm, txawm siv lossis tsim khoom.