Steel i beam, ebang ke e tloaelehileng kapa e bobebe, e na le boholo bo batlang bo le holimo le bo moqotetsane, kahoo nako ea ho inertia ea lilepe tse peli tse kholo tsa karolo e fapaneng e fapane haholo, kahoo e ka sebelisoa feela ka kotloloho bakeng sa litho tse kobehileng. sefofane sa poleiti ea eona ea tepo kapa se entsoeng ka litho tse latang.Ha e tšoanelehe bakeng sa litho tsa axial compression kapa litho tse kobehileng sefofaneng se pota-potileng ho web, se fokotsang kopo ea bona.
tšepe i beam haholo-holo e arotsoe ka tšepe e tloaelehileng ke beam, tšepe e bobebe ke beam le tšepe e pharaletseng ea flange ke beam.tšepe ke beam e nang le li-flange tse pharaletseng, li-flange tse mahareng le li-flange tse moqotetsane li arotsoe ho ea ka karolelano ea bophahamo ba li-flanges ho webs.Litlhaloso tsa tse peli tsa pele ke 10-60, ke hore, bophahamo bo lekanang ke 10 cm-60 cm.Ka bophahamo bo ts'oanang, tšepe ea tšepe e bobebe e na le flange e moqotetsane, tepo e tšesaane le boima bo bobebe.steel i beam e nang le flange e pharaletseng, e tsejoang hape e le tšepe ea H, e khetholloa ka maoto a bapileng 'me ha ho na tšekamelo ka har'a maoto.Ke ea tšepe ea karolo ea moruo 'me e phuthoa holim'a leloala le phahameng la bokahohleng, kahoo e boetse e bitsoa "universal steel i beam".