Inzu y'inyuma ni imwe mu nzu zikoreshwa cyane mu bwubatsi. Kubera ko inkingi y'inyuma iba ifite ishusho nk' "urugi", yitwa inkingi y'inyuma cyangwa inkingi y'inyuma, izwi kandi nka Eagle frame cyangwa gantry. Ubwo bwoko bw'inzu igizwe ahanini n'inkingi y'inyuma, inkingi y'inyuma, inkingi y'inyuma, inkingi y'inyuma, ishingiro rishobora guhindurwa, n'ibindi.

Inzu y'inyuma ni imwe mu nzu zikoreshwa cyane mu bwubatsi. Kubera ko inkingi y'inyuma ifite ishusho nk' "urugi", yitwa inkingi y'inyuma cyangwa inkingi y'inyuma, izwi kandi nka Eagle frame cyangwa gantry. Ubu bwoko bw'inzu bugizwe ahanini n'inkingi y'inyuma, inkingi y'inyuma, inkingi y'inyuma, inkingi y'inyuma, ishingiro rishobora guhindurwa, n'ibindi. Inzu y'inyuma ni igikoresho cy'ubwubatsi cyatangijwe bwa mbere na Leta Zunze Ubumwe za Amerika mu mpera z'imyaka ya 1950. Kubera ko ifite ibyiza byo guteranya no gusenya, kuyitwara byoroshye, ubushobozi bwo gutwara neza, kuyikoresha neza kandi yizewe hamwe n'inyungu nziza mu bukungu, yateye imbere vuba. Mu myaka ya 1960, u Burayi, u Buyapani n'ibindi bihugu byashyizeho kandi bitera imbere ubu bwoko bw'inzu. Mu Burayi, mu Buyapani no mu bindi bihugu, ikoreshwa ry'inzu y'inyuma ni ryo rinini cyane, rigizwe na 50% by'ubwoko bwose bw'inzu, kandi amasosiyete menshi y'inzobere akora inzu y'inyuma y'uburyo butandukanye yashinzwe mu bihugu bitandukanye.

Kuva mu myaka ya 1970, Ubushinwa bwagiye bushyiraho uburyo bwo gukata inyubako z’imbere mu gihugu (portal scaffold system) buturutse mu Buyapani, muri Leta Zunze Ubumwe za Amerika, mu Bwongereza no mu bindi bihugu, bwakoreshejwe mu kubaka inyubako zimwe na zimwe ndende kandi bugera ku musaruro mwiza. Bushobora gukoreshwa atari nk’inyubako z’imbere n’inyuma gusa mu kubaka inyubako, ahubwo bunakoreshwa nk’inyubako zo hasi, inyubako zishyigikiwe n’inyubako zigendanwa. Bufite imirimo myinshi, bityo bunatwa inyubako zifite imikorere myinshi.

Mu ntangiriro za 1980, bamwe mu banyamwuga bo mu rugo n'abakora ibikoresho batangiye kwigana urwego rw'inyubako. Kugeza mu 1985, abakora ibikoresho 10 byo mu nyubako bagiye bashyirwaho uko bikurikirana. Uru rwego rw'inyubako rwamamaye cyane kandi rukoreshwa mu mishinga y'ubwubatsi mu turere tumwe na tumwe, kandi rwakiriwe neza n'amashami y'ubwubatsi ya Guangda. Ariko, bitewe n'imiterere itandukanye y'ibicuruzwa n'amahame y'ubuziranenge ya buri ruganda, bitera ingorane zimwe na zimwe mu mikoreshereze n'imicungire y'urwego rw'ubwubatsi. Ibi byagize ingaruka zikomeye ku guteza imbere iri koranabuhanga rishya.

Mu myaka ya 1990, ubwo bwoko bw'inyubako bwari butaratera imbere kandi bwari busigaye bukoreshwa gake mu bwubatsi. Inganda nyinshi z'inyubako zafunzwe cyangwa zigahindurwamo umusaruro, kandi ni nkeya gusa zifite ubwiza bwo gutunganya neza zakomeje gukora. Kubwibyo, ni ngombwa guteza imbere ubwoko bushya bwa portal tripod hamwe n'imiterere y'inyubako z'igihugu cyacu.