Izibhethi zesi H, ngokuthi sometimes ezwa ngokuthi i-H beam steel, zilawula indima enkulu ekhuleni ngokokuthi ziyinkimbinkimbi fela akhona okwenzelake ukusebenzisa yona ngokwezinye izimo. Ziningi kwezi zibhethi ezinhlanjwe ngezinhlobo zesi structural steel njenge ASTM A992. Le nto ethile ikhona ukuthi inakeleka ngokuhamba kuye noma yini kakhulu ngokulinganisa nemitha yokwenza. Okukhona kweyona indima yazo yileyo fomu ye H esekelwe kumathikimbo, oku kunceda ukuthi kuthathwe kakhulu izindleko lapho izinjini zidinga ukuthuthwa. Lapho abasebenzisa bazo, kusobala kuhlanganisa ezimbini izinhlango (sinikezela amathikimbo) kumathikimbo omnye ophakeme, ukwenza le fomu ye H esikhundleni esinikeza okunye ukuthuthwa. Ngokweyokuthi zinhlanjwe ngokunjalo, izibhethi zesi H zikhona ukuthi zenzeke ngokuthuthwa kwezindleko nezinto zokuthuthwa ngokwezibonelo. Ngakho ke sinikwa yona lapho lapho izibhethi, izinkampani ezikhulu nezindawo zokusebenza lapho kudinga ukuthuthwa kwezinhlobo zokuthuthwa.
I-steel ye-H-beam engqonyelwe yindlela efanayo nezibopho ezingu- H-Beam 150 kanye ne-H-Beam 200, abizwa ngokubunguza ubude phakathi kwezimbili ezine milimitha. I-beam enkulu engu-150 mm iyasebenza kahle kumaqondo ohlinzekayo apho amathrisi engasingabi kakhulu, ngelixa i-200 mm enkulu ngaphezulu iyasebenza kumaqondo amabi apho kudingeka ukuba ngamanani amabi kakhulu kumaqondo amakhulu kanye nezakamisa izindawo zokusebenza. Xa kudilizwa amabase, le nto yisibonelo esikhulu. Abasebenzisa amakhontrakti amaningi ayasebenzisa izibopho ezingu-200 mm xa be dila kumaqondo amakhulu kanti kudingeka ukuba kube nezindawo zokusebenza ezinhle. Ukulayisha le zinhlobo ngokulungileyo akuyona kuphela ukulandela amadodolo. Ukuhlolwa kwezinye ikubonisa ukuthi ukukhetha ubude obungcono bokwe-beam kungase kube yinto ephakeme kakhulu, ngakho ukwazi kahle ukuthi yiziphi izidingo ezithile zokwe-projekthi kuyadingeka kakhulu kubantu bonke abasebenzisa kumaqondo ohlinzekayo.
Izikhawulo zokuhamba kahulumeniwa ngokuthi zihlanganise izindleko ezinkulu, okwenza yabo okudingekayo xa kubekwa amasithithiwe amaphezulu noma amaprojekthi amakhulu. Okukhawuleza yabo kukuthi leli qondo lokuqala lokuqala lokuqala lokuqala lokuqala lokuqala lokuqala lokuqala lokuqala lokuqala kwamaphesenti ayi-30 kunoma izikhawulo eziyintandokazi ezifana nezona zindleko.
Ii-H Beams zinezinkenke eziphambene nezimalo eziphambene, oku kuthiwa yinto ebonisa ukuba zikhuselekile futhi noma ngemikhondo emibi njengokuphunzwa kwezinkanye nezinduku ezikhulu. Lezi zibe zazingeni futhi zingaphansi komoya, okwenza kube lula ukuthi izakhiwo zilinde ngeminyaka engaphezu. Xa i-H Beams aphiwe ngokubhujwa okuphezulu kwezicorcoro noma ziwakhiwe ngamahhovisi amabiwe, zilinda futhi ngemva kwesikhathi eside. Oku kubaluleke kakhulu emakhweni apho izakhiwo aqondiswa ngokuphelele yimisebe yezulu.
Ii-H beams zingenisa izindleko zokulingana nezindleko eziyisisekelo ngenxa yokuquka okuphezulu noma kuthiwa ziwakhiwe ngokusetshenziswa kwezinto ezingaphezu. Indlela le zibe zisebenza ngokusebenzisa ukuthi abasebenzisi baze baphumelela ngamandla ngokunciphisa izindleko zokusebenza. Ezinye izinkomba zokuvikela zilinganisa ukuthi ukuguqula kuma-H beams kungakhuphe izindleko zokuvakwa ngokungenanisa kanye no-15% ngaphandle kwezindleko zokuvakwa ngokweqile. Kwezinkampani ezifuna ukuthola izindleko eziphansi, oku kwenza i-H beams kube yinto ephambene nezindleko kakhulu ngokungabi noma ukuphunye izinto ezinhle.
Ngokushesha okuthile ngalokhu njengama-H-Beams kunye noma amalayithi awabo, sicela uhlale kudingeka emasiko esidingayo okuthi akhawuleze kumoya omkhulu kunye nezimali zesekheni.
Ii-H-Beams zibalulekile ukugcina izimbili zokudlala zikhomba ngokupheleleyo. Le ndawo ezinzileyo zokwehliswa iintlobo zokwenza ukuze iintsindwa nezimbili zokudlala zikhombisa ngokupheleleyo xa ziyiya ngapandle kwezinye izindlu. Okuqukethweyo kweyona ngokuba yintoni engqokomileyo yendawo yazo. Abasebenzi bokudlala banelisekile ngokusebenzisa i-H-Beams kuba bavumela le ndawo evelayo yezindlu zokudlala nezimbili zokuthengisa ngaphandle kokulahla lutho lwezixhobo. Iibeem zihlawula zonke izindleko ezithile kwiqonga elishicileyo kwiindleko ezine ngokomdla, ngoko ke amathuba ezweni anelisekile kubo ngokusebenzisa lawa beem ngokudla. Abasebenzi bokudlala akunakukuxhumana neentlobo zasegoli zokudlala ngaphandle kwezi beem evelayo ezixhakaxhaka zonke.
Lokhuwa kubungaza izimbali, kungcono ukubalwa kakhulu ukuba izinkambu zoH-Beam zingasebenzisa kanjani. Lezi zinkambu zomoya ziyenza ngaphezulu kwalokho oyingxenye yezindleko kakhulu futhi ziyakwazi ukulinda ngokulula kwezinyanga, oku kwenza ukuba yizinto ezifanele kakhulu kubantu abasebenzisa izindleko nezimali. Indlela ethi zokubungawo kuvumela abasebenzi ukubungaza izinto ezide kakhulu phakathi kwezinkxenye zokuthibela. Ngaphansi kwezinkxenye zokuthibela kuvumela ukuthi izinto zibe nezifo eziphakathi futhi kuvumela ukuthi kube lula ukuthola amaphethini. Lokhuwa ngoqobo kwezinyanga eziyisemukelweni kuvumela ukuthi kungcono ukwazi ukuthi kungakanani izimbali ezifika kakhulu eminyakeni egadwayo. Izimbali ezokubungazwa ngokusebenzisa izinkambu zoH-Beam zingafika kakhulu futhi ziyakwazi ukulinda ngokulula kwezinto ezingcono ngokulinganisa nezinye izinto ezifumanekayo xa lezi zinto zokubungaza zokuthibela zokuthibela zokuthibela zokuthibela zokuthibela zokuthibela.
Kwemisebenzi yekhilwa yezindustri, i-H-Beams inemisebe ebalulekileyo ekwakhiweni kwezindawo zokuthiwa okunamandla ngaphandle kokulahla. Lezi zibhima ziyindlela ephumelelayo xa kusebenzwa emhlabeni ongcono lapho ubunzima bukhona. Sibona lezi zibhima kuzo zonke izindawo ezahlukene ngokuhlanganisa izilinda zokukhiwa nezindawo zokugcina okukhulu. Ngemva kwezinyanga, abasebenzisi bokhulu baleli zibhima ngokuzilolwa kweminye imisebenzi ngokuba yibo okulula busebenza ngokuhle kuzindawo lapho ubukhulu neziloba ephumelelayo zingaba yimfuneko ebalulekile.
Kwixhaso lemfundo, ukukhetha isibheki somkhaba wesi Steel yomsebenzi wombuzo, ukuhlazakala kwezidinge zikahle nezinyathelo zokuthi H-Beams kunye ne I-Beams sihluke kakhulu lokuhlinza nokusebenzela ngokuphelele.
Ukuze kube nezimali ngokusebenza kwezimali, i-H-Beams zinhloke ukuba nobunjwa ngokuhluke kuma-I-Beams futhi zingasebenzisa izimali ezinkulu kakhulu. Okuqukethwe kwe-H-Beams kukho indlela abasebenzisa ngayo le nkinga ye-lateral-torsional buckling esikhundleni sengqondo. Lokhu kwenza wabo kube yinto ephawulwa ngayo kumaqembu amakhulu kanye nezinye izimo eziphumelelayo lapho kudingeka ukuthuthwa okukhulu ukuthi kube yinto ephawulwa ngayo kuzo. Ngokwesikali, i-I-Beams zinezinyathelo ezimnye ezifanele ukuthula kwebavi, kodwa azikwazi ukuthutha ngokulungile kumaqo amanye noma kumaqo okuthwalela. Lokhu kwenza wabo kube yinto ephawulwa ngayo kuzo izimo ezincane noma kuzo ezidinga izimali ezimbalwa. Lapho abasebenzeli nezokwelapha bahlala bakhetha phakathi kwezinto ezi mbili, kudingeka bakhumbule ngokugcwele ukuthi yiziphi izinto eziphumelelayo lapho kudingeka ukuthuthwa okukhulu ukuthi kube yinto ephawulwa ngayo kuzo, ngisho noma kungathintwa ubulili noma ukusebenza ngokudla kweqembu.
Xa ukhetha phakathi kwe-H-Beams ne-I-Beams, yindlela yokuthiwa yilapho isithuthi kumele sinekululeko. Amakhubalo amakhulu njengamaphoyisa kanye nezindawo zokuthengisa eziphezulu kumele kube nezindlela eziH-Beams kanti ziyanduluka ngokukhulu noma zinezinye eziningi zokuthutha okuningi. Le ndlela ziyakwa yisikhumba esikhulu kakhulu kwamakhubalo amakhulu. Ngokwesibili, le I-Beams iyasebenza ngakunye xa kungaphansi kwezimo eziningi noma xa ukunciphisa indawo iyakwane. Ziyimnyama futhi zilula, ngakho kungcono kakhulu kuzindlela zokulalela noma lapho akukho muntu ozoyibona ngokwokudla. Khuni ngokuthi sometimes abantu bafunqwa ukuthi yini indawo engenazo amagama aphakathi kuzindlela ezimnyama. Ngenkathi yonke, ukwazi cabanga ngalokho okuthathwa yilapho kanye nokuthola isicelo kubasebenzisa amakhubalo amakhulu akumele kuyilapho. Akukho muntu ozoyicinga xa kuzokulwa kanye nezimali eziphathelene ngokwokudla.
Izimpati ze-stainless steel zinezici eziqinileyo yokusebenzisa futhi okunakekela ukuncipiswa kwezindleko kumasepela. Lapho abasebenzisa amandla okusebenzisa isiliva esiphathelene nezimpati zabo, kubonisa ukuthi banelisekile ukuba ngokuluhlisa noma kungabi ngekakhulu. Imaphakathi yesicelo ibonisa ukuthi ku-90% weziliva zasepela kusebenziswa kabusha ngalo nyaka, futhi leli siliva libekekelela konke okunguqo lwalo ngemva kokuqaphela okuningi. Kumaqhapheka abathanda ukudla ngokuluhlisa kodwa bafuna amandla ohlelo lokuqinisa, lezi zimpati zinikeza izimpetho zokuhlisa nezobuchwepheshe. Isicelo samasepela sasilethela ngokukhulunywa kwezimali eziluhlisekileyo kuleli nyanga, ngakho ukukhetha izinto njengezimpati ze-stainless steel H hazwa amathuluzi wokulawula kodwa futhi kuyekela ukuthi amasepela athinte ngokuluhlisa kwezimali ngokuphelele kwezinsizwa zazo.
Indlela esikhiqiza ngayo ama-H-Beam namuhla igcizelela kakhulu ukonga amandla kuyo yonke inqubo yokukhiqiza. Izinkampani seziqala ukusebenzisa izinto ezinjengezimiso zokukhiqiza eziqinile nezindlela ezintsha zokushisela ezinciphisa ukusetshenziswa kwamandla lapho kukhiqizwa lezi zingxenye zesakhiwo. Okuthakazelisayo ukuthi lezi zinguquko azisizi nje imvelo. Empeleni futhi konga imali ngoba izinto ezisetshenziswayo zisetshenziswa kahle kakhulu kuyo yonke imikhakha. Abantu abaningi abasebenza kule ndawo bayokutshela ukuthi ukuhlanzeka akuseyona into enhle kuMama Umhlaba. Kunengqondo nangokwezimali. Njengoba imithetho iba nzima unyaka nonyaka ngokuphathelene ne-carbon footprint, amabhizinisi amaningi azibona esemgwaqweni lapho ukushintshela kulezi zindlela zokukhiqiza ezihlanzekile kungeyona into engathandeki uma efuna ukuhlala encintisana ngenkathi ehlangabezana nalezo zidingo zemvelo eziya ziba nzima.
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