Nsanja yolumikizirana
kuphatikizapo nsanja zitatu zatsopano zolumikizirana ndi chitoliro, mtundu wachikhalidwe wa nsanja yachitsulo ya Angle ndi nsanja ya nangula yokhala ndi chubu chachitsulo chosasunthika ngati zinthu zozungulira, monga coefficient ya katundu wa mphepo, mphamvu yolimbana ndi mphepo yamphamvu yakunja pogwiritsa ntchito kulumikizana kwa flange, bolt tensile, yosavunda mosavuta, kuchepetsa ndalama zokonzera pillar mtundu wa triangle yofanana, kusunga chitsulo ndi chaching'ono, kuphimba dera laling'ono, kusunga chuma cha malo, malo osavuta a nsanja yopepuka, maziko atsopano a bolodi lodulira masamba la mtundu wa 3, kuchepetsa mtengo wa kapangidwe koyambira ka truss kolimba, nthawi yoyendera bwino ndi kukhazikitsa yokhazikika ya polojekiti kapangidwe kafupi ka nsanja yamtundu wa mphepo, mizere yosalala, kukumana ndi chimphepo champhamvu sikophweka kugwa, kuchepetsa kuvulala kwa anthu ndi nyama. Kapangidwe kake kakugwirizana ndi kapangidwe ka chitsulo cha dziko lonse ndi malamulo a kapangidwe ka nsanja, kapangidwe kake ndi kotetezeka komanso kodalirika.