Cias muab, nws zoo ib yam li 16 hli tuab txhawb nqa steel kav, steel arches, thiab steel gratings siv nyob rau hauv subway tsim. Cov no yog tag nrho rau kev txhawb nqa, tuav rov qab cov phab ntsa hauv av ntawm culverts thiab tunnels los tiv thaiv lub hauv paus qhov tawg, thiab tau siv dav hauv kev tsim kho subway.
Cov khoom txhawb nqa steel siv hauv kev tsim kho subway suav nrog qhov kawg ruaj khov thiab hloov tau yooj yim sib koom ua ke.
