Uma ucabangela ukuqina namandla ophahleni lwakho, udinga ukwazi ukuthi yiziphi izinto zokwakha eziphumelela kakhulu ukuzisebenzisa. Njengenye yezingxenye eziyisisekelo zesakhiwo, uphahla lunikeza ukusekela okuphelele. Ayivikeli kuphela izakhamuzi emathonyeni angaphandle, kodwa futhi iqinisa uhlaka lwesakhiwo sonke. Ngakho-ke, wazi kangcono konke odinga ukukwazi mayelana purlins steel lapho ukhetha noma yiluphi uhlobo ophahleni. Amandla esakhiwo salezi zinto abenza bafaneleke kuzo zonke izinhlobo zophahla, kusukela ophahleni lwamashidi kuya ophahleni oluyisicaba, kungakhathaliseki ukuthi yiziphi izinto.
Abanikazi bezindlu abaningi nabanikazi selokhu baphendukela kuma-purlin ensimbi ukuze bahlangabezane nezidingo zabo zokufulela, ikakhulukazi uma kuziwa emandleni nokuqina. Kodwa uma kungokokuqala uhlangabezana nemigijimo, kuwumqondo omuhle ukufunda izisekelo kuqala ukuze ubone ukuthi zikulungele yini. Kulo mhlahlandlela, uzofunda kabanzi mayelana nokuthi ayini ama-purlin ensimbi, izinhlobo ezahlukene, nokunye.
Uzothola izici ezimbalwa ezihlukile ezinhlotsheni ezihlukahlukene zama-purlins, okuhlanganisa izindawo eziyisicaba namashalofu noma imilenze ephikisanayo enikeza ukusekelwa kwezingxenye eziyisicaba. Ku-C-purlins, ama-flange aphansi nangaphezulu anosayizi ofanayo futhi angasekela inani leziphali ezimaphakathi noma eziqhubekayo. Kodwa-ke, ngenxa yokuma nokuma kwawo, ama-purlin esiteshi awakwazi ukugqagqana.
Ama-purlin amise okwe-Z, ngokuphambene nalokho, ahleleke ngokudayayo amashalofu abanzi nawumngcingo. Lokhu kuvumela amajoyinti agqagqene futhi angasetshenziswa ukukhulisa ukujiya kwama-purlins, isibonelo uma i-roof slab yenziwe ngezinto eziwugqinsi noma uma i-purlin eyodwa ingakwazi ukusekela umthwalo wosilingi osindayo/i-roof slab.
Ezinye izinhlelo zokusebenza ezidumile zama-purlin ensimbi zifaka izindawo zokugcina ezolimo, izindawo zokugcina izinto, izakhiwo zezentengiselwano, izindawo ezingenalutho, izindawo zokupaka izimoto, ngisho nezakhiwo zensimbi ezakhiwe ngaphambili.
Ama-purlins ensimbi engagqwali ngokuvamile enziwa ngensimbi enamandla amakhulu aqinile kanye ne-ductility - i-G450, i-G500 noma i-G550. Insimbi ephehliwe inenzuzo yokuncintisana ngaphezu kwezinye izinhlobo zensimbi engaphekiwe ngoba ayigqwali noma ayifaki oxidize. Lokhu kunganciphisa kakhulu noma yiziphi izindleko ezihlobene nokugcinwa nokulungiswa kophahla.
Akukhona lokho kuphela, ama-purlin angahlala ngisho neminyaka eyi-10 uma efakwe kahle. Lokhu kuyiqiniso ikakhulukazi ezakhiweni ezivalekile lapho imisebenzi ehlukahlukene ingakhiqiza ukugeleza-umswakama, izinhlanganisela, ezinye izinsimbi, njll-okungathinta ikhwalithi yokugijima. Kunoma yiluphi uhlobo lokwakha, ama-purlin ensimbi, ikakhulukazi ama-galvanized, afakazele ukuthi ayisinqumo esifanele ngisho nasezimweni ezinzima zemvelo.
Isikhathi sokuthumela: May-14-2023