Mtengo wachitsulo, kaya wamba kapena wopepuka, uli ndi gawo lalikulu komanso lopapatiza, kotero mphindi ya inertia ya nkhwangwa ziwiri zazikulu za gawoli ndi yosiyana kwambiri, kotero ingagwiritsidwe ntchito mwachindunji kwa mamembala omwe akupindika. ndege ya mbale yake yapaintaneti kapena yopangidwa ndi mamembala ang'onoang'ono. Sikoyenera kwa axial psinjika mamembala kapena mamembala omwe amapindika mu ndege perpendicular kwa intaneti, zomwe zimalepheretsa ntchito yawo.
chitsulo ine mtengo amagawidwa kukhala wamba chitsulo ine mtengo, kuwala zitsulo ine mtengo ndi lonse flange zitsulo ine mtengo. chitsulo ine mtengo ndi flanges lonse, sing'anga flanges ndi yopapatiza flanges amagawidwa malinga ndi kutalika chiŵerengero cha flanges kuti ukonde. Zolemba ziwiri zakale ndi 10-60, ndiko kuti, kutalika kwake ndi 10 cm-60 cm. Pa msinkhu womwewo, kuwala kwachitsulo i beam kumakhala ndi flange yopapatiza, ukonde wopyapyala ndi kulemera kopepuka. chitsulo ndi chitsulo chokhala ndi flange chachikulu, chomwe chimatchedwanso chitsulo H mtengo, chimadziwika ndi miyendo yofananira ndipo palibe kupendekera mkati mwa miyendo. Ndi chuma gawo zitsulo ndi adagulung'undisa pa zinayi mkulu chilengedwe kugubuduza mphero, choncho amatchedwanso "universal zitsulo ine mtengo".