Khetho ea mahlaseli a H e tlameha ho qala ka ho ipapisa le litšobotsi tse tharo tsa mantlha tse ke keng tsa buisanoa, kaha tsena li amana ka ho toba le hore na sehlahisoa se ka fihlela litlhoko tsa moralo oa sebopeho.
Sehlopha sa Boitsebiso:Thepa e tloaelehileng haholo bakeng sa mahlakore a H ke tšepe ea sebopeho sa carbon (joalo kaQ235B, Q355B Lehlaseli la Hka maemo a Sechaena, kapaLebone la A36, A572 Hka maemo a Amerika) le tšepe e matla e nang le motswako o tlase. Q235B/A36 H Beam e loketse kaho ea sechaba ka kakaretso (mohlala, mehaho ea bolulo, lifektheri tse nyane) ka lebaka la ho tjheseletsa ha eona hantle le litšenyehelo tse tlase; Q355B/A572, e nang le matla a phahameng a chai (≥355MPa) le matla a ho thapolla, e khethoa bakeng sa merero e boima joalo ka marokho, li-workshop tse kholo, le li-cores tsa meaho e phahameng, kaha e ka fokotsa boholo ba karolo e tšekaletseng ea beam le ho boloka sebaka.
Litlhaloso tsa Tekanyo: Mahlasedi a H a hlalosoa ka litekanyo tse tharo tsa bohlokoa: bophahamo (H), bophara (B), le botenya ba webe (d). Mohlala, mahlasedi a H a ngotsweng "H300×150×6×8"e bolela hore e na le bophahamo ba 300mm, bophara ba 150mm, botenya ba webo ba 6mm, le botenya ba flange ba 8mm. Libalaka tsa H tse nyane (H≤200mm) hangata li sebelisoa bakeng sa meaho ea bobeli joalo ka li-joist tsa fatše le litšehetso tsa karohano; tse mahareng (200mm<H<400mm) li sebelisoa mabaleng a maholo a meaho ea mekato e mengata le marulelo a fektheri; libalaka tsa H tse kholo (H≥400mm) li bohlokoa haholo bakeng sa litulo tse telele haholo, marokho a bolelele bo bolelele, le liforomo tsa lisebelisoa tsa indasteri.
Tshebetso ea Mekaniki: Tsepamisa maikutlo hodima matshwao a kang matla a tlhahiso, matla a ho thapolla, le ho tiya ha tshusumetso. Bakeng sa diporojeke tse dibakeng tse batang (mohlala, leboya la China, Canada), mahlasedi a H a tlameha ho feta ditekong tsa tshusumetso tse mocheso o tlase (jwalo ka -40℃ ho tiya ha tshusumetso ≥34J) ho qoba ho robeha ha bonolo maemong a ho bata; bakeng sa dibaka tsa tshisinyeho ya lefatshe, dihlahiswa tse nang le bokgoni bo botle ba ho thinya (bolelele ≥20%) di lokela ho kgethwa ho ntlafatsa ho hanyetsa tshisinyeho ya lefatshe ya sebopeho.