Uhlaka lwensimbi olwakhiwe ngendlela ebandayo luyinketho ehlala isikhathi eside, ethembekile futhi engabizi kakhulu kumaphrojekthi wokwakha asezingeni eliphansi naphakathi nendawo.Ngokuvamile ibhekisela ekwakhiweni kohlaka olukhanyayo lapho izici zesakhiwo ezime mpo nezivundlile zakhiwa ngokuyinhloko isistimu yamalungu ozimele aphindaphindayo.Amalungu ozimele ngokuvamile ahlukaniswa ngamayintshi angu-16 noma angu-24 phakathi nendawo, ngokuhluka kwezikhala okuphansi nangaphezulu kuye ngemithwalo nembobo.
Amalungu odonga ngokuvamile angamalungu esiteshi esinezindebe eziqondile ezime mpo, angena ezigabeni “zethrekhi” zesiteshi ezingavaliwe phezulu nangaphansi.Ukucushwa okufanayo kusetshenziselwa kokubili ukuhlangana kwaphansi nokuhlanganisa amapulangwe, kodwa kuhlelo lokusebenza oluvundlile lwephansi, kanye nohlelo oluvundlile noma olutshekile lohlaka lophahla.Izakhi ezengeziwe zesistimu yokwenza uzimele zifaka izixhumi nezixhumi, ama-brace nama-bracing, iziqeshana nezixhumi.Iphansi lensimbi elakheke ngokubanda kanye nama-trusses ophahleni nawo ayatholakala kumafreyimu ensimbi akhiwe ngendlela ebandayo.
Insimbi eyakhiwe ngokubanda isho inqubo yokukhiqiza lapho insimbi enamashidi ahlanganiswe ngensimbi yenziwa imikhiqizo efana nezikhonkwane, ama-joists, ithrekhi, izihloko, ama-engeli, amalungu e-truss nezinye izingxenye.Ngohlaka lwensimbi olwakhiwe ngendlela ebandayo, ukujiya kwezinto ezijwayelekile kusuka ku-0.0147 in. (0.373 mm) kuye cishe ku-1/8 in. (3.175 mm).Imikhiqizo yensimbi evamile eyakhiwe ngendlela ebandayo ichazwa ku-AISI S220, North American Standard for Cold-Formed Steel Nonstructural Framing, 2020 Edition kanye ne-AISI S240, North American Standard for Cold-Formed Steel Structural Framing, 2020 Edition (ukulandwa kwamahhala kokuthi www.aisistandards. org).Izinhlobonhlobo zemikhiqizo yokubumba yensimbi eyakhiwe ngendlela ebandayo iyatholakala kubakhiqizi abahlukahlukene.Imikhiqizo yensimbi eyakhiwe ngendlela ebandayo ngokuvamile yenziwa ngensimbi egoqwe ngezinki eqinile enamandla okukhiqiza angu-33 ksi noma 50 ksi.
Uhlaka lwensimbi olwakhiwe ngokubandayo eNyakatho Melika luvame ukuklanywa futhi lwakhiwe ngokuvumelana namazinga athuthukiswe yi-American Iron and Steel Institute.Uhlaka lwensimbi olwakheke ngokubanda luziboleka ezakhiweni zezakhiwo lapho amasistimu aphansi nophahla asekelwa ezindongeni ezithwele.Uhlaka lwensimbi olwakhiwe ngendlela ebandayo lusetshenziswe ngempumelelo ekwakheni amaphrojekthi angaphezu kwezindaba eziyi-10 ubude.
Isikhathi sokuthumela: Aug-05-2022