H-beam lub durability los ntawm nws lub zog-rau-hnyav piv nyob rau hauv cross-section. Qhov no optimized tsim txhais tau hais tias cov beam hom muajntau zog tiv thaiv hnyav loads. H-beam kuj tseem tuaj yeem yooj yim dua rau vuam, thiab vim tias nws muaj thaj chaw loj hauv nws cov ntu ntu, nws khwv tau lub zog siab.
