Isizathu sokuqala: i-STEEL isinikeza izinhlangano zokuphepha kwezindlu zokuphepha kwezindlu zase-Europe ngokwesifundo se-EN 1317. Lesi silungiselelo sisebenza ngokuphepha kwemoto, ukuthabatha ukuphepha kwezindlu, nokuhlanzwa kokuphepha kwezindlu zase-Europe nezinhlangano zokuphepha kwezindlu.
Isizathu sokubaluleka: I-STEEL inikeza izilungiselelo se-Amerika sokuphatha isibonelo sesikhondlo sezindlu esithunywa ngokwesifundo se-AASHTO nesizathu sezempilo zokugcina umphakathi. Lokhu silungiselelo sisebenzisa kakhulu kusibonelo sesikhondlo sezindlu, izisikhephe zokuphatha isibonelo sesikhondlo sezindlu, izihlalo zesibhujwa...