Njengoba amadolobha emhlabeni wonke egijima ukuze athuthukise ingqalasizinda endala futhi akhe izindawo ezintsha zasemadolobheni,izinqwaba zeshidi lensimbiziye zavela njengesixazululo esishintsha umdlalo—ngesivinini sazo sokufaka esisheshayo esiba yimbangela ebalulekile yokwamukelwa, kusiza osonkontileka ukunciphisa isikhathi samaphrojekthi phakathi nezinhlelo zokwakha zasemadolobheni eziqinile.
Imininingwane yemboni evela kwi-Global Steel Construction Association (GSCA) ikhombisa ukwanda okungu-22% unyaka nonyakainqwaba yeshidiukusetshenziswa kwamaphrojekthi asemadolobheni ngo-2024, okuhlanganisa ukunwetshwa kwezitimela zangaphansi komhlaba, ukuthuthukiswa kabusha kolwandle, kanye nomsebenzi wokumba ngokujulile izisekelo eziphakeme. Ngokungafani nezakhiwo zokugcina ukhonkolo zendabuko ezidinga amasonto amaningi okulungisa,izinqwaba zensimbi zesimanje—ngokuvamile elungiselelwe ukuhlangabezana nobukhulu obuthile bephrojekthi—ingaqhutshwa emhlabathini ngesivinini samamitha ayi-15 kuya kwangu-20 ngosuku, inciphise isikhathi sokwakha endaweni ngo-30% ngokwesilinganiso.
“Ukwakhiwa kwedolobha akulindi—ukubambezeleka kusho izindleko eziphakeme kanye nokuphazamiseka okukhulu kubahlali,” kusho uMaria Hernandez, unjiniyela omkhulu wengqalasizinda enkampanini yokwakha eseMadrid i-EuroBuild. “Emsebenzini wethu wakamuva wokwandisa i-metro eBarcelona, sishintshela ekuxhumeniizinqwaba zeshidi lensimbi eligoqiwe elishisayongoba izindonga zokugcina umhubhe zigundwe izinsuku ezingu-12 kusukela esigabeni sokumba. Lokho kubalulekile uma usebenza ezindaweni ezinabantu abaningi lapho kungenwa khona kalula.
Ukukhanga kukaama-sheet piles ka-uIdlula isivinini. Izembozo zazo ezingagqwali (njengokufakwa kwe-hot-dip galvanization noma ukwelashwa nge-polymer) zizenza ziqine ukuze zisetshenziswe isikhathi eside engqalasizinda, kuyilapho ukwakheka kwazo kwe-modular kuvumela ukususwa okulula nokusetshenziswa kabusha kumaphrojekthi esikhathi esizayo—okuhambisana nemigomo yokusimama kwedolobha emhlabeni jikelele. Ekuthuthukisweni kolwandle lwase-Marina Bay eSingapore, isibonelo, izinqwaba zamashidi ezifakwe ngo-2023 ukuze kuqiniswe umhlaba obuyiselwe zizosetshenziswa kabusha njengephrojekthi yokuvikela ugu oluseduze ngo-2025, okunciphisa imfucuza yezinto ezibonakalayo ngo-40%.
Abahleli bedolobha nabo baqaphela izinzuzo zethrafikhi kanye nokufinyelela komphakathi. EToronto, iphrojekthi yokwandisa imigwaqo ngekota edlule isebenzise izinqwaba zamashidi ukwakha izindonga zokuvikela zesikhashana eduze kwendawo yokusebenza. “Ngenxa yokuthi ukufakwa kwaqedwa ngobusuku obuthathu nje kuphela, sigweme ukuvalwa kwemigwaqo ngokuphelele ngesikhathi sehora elimatasa kakhulu—into ebingenakwenzeka ngezindonga zekhonkrithi,” kusho okhulumela uMnyango Wezokuthutha waseToronto uJames Liu.
Abakhiqizi basabela esidingweni esikhulayo ngokusungula izinto ezintsha. Ngasekuqaleni kwale nyanga, umkhiqizi wensimbi waseDashi u-ArcelorMittal wethule uhlobo olusha lwenqwaba yeshidi elilula eligcina amandla aphezulu kodwa kulula ngo-15% ukuthutha nokufaka, ehlose amaphrojekthi asemadolobheni aphakathi nendawo lapho ukufinyelela kwemishini esindayo kulinganiselwe khona.
Ochwepheshe bezimboni babikezela ukuthi lo mkhuba uzoshesha ngo-2025, kanti ukwamukelwa kwenqwaba yamashidi kulindeleke ukuthi kukhule ngo-18% njengoba amadolobha ase-Asia nase-Afrika enyusa ukutshalwa kwezimali kwengqalasizinda. “Ukwakhiwa kwamadolobha akunciphisi ijubane, futhi osonkontileka badinga izixazululo ezilinganisela isivinini, ukuphepha, kanye nokusimama,” kusho umhlaziyi wengqalasizinda we-GSCA, uRaj Patel. “Amanqwaba amashidi ahlola wonke lawo mabhokisi—futhi indima yawo ekwakheni izakhiwo zasemadolobheni eziphumelelayo izokhula kakhulu.”
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Isikhathi sokuthunyelwe: Septhemba-03-2025