 Nyorai kupfuurira kweiyi ndima - Dhizaini itsva yaizoratidzira ganda resimbi rakavakwa mumatanho maviri - chubhu mukati mechubhu - iro rine mbiru dzinorema uye rutsigiro rwakanaka rwechimiro kupfuura rwepakutanga, uye raizoda mahwindo akakura nokuda kwokunyaradza uye kuvandudzwa kwekudzivirira moto. Chiyeuchidzo chacho chaizosanganisira zviyeuchidzo zviviri zvine nhurikidzwa 5 zvaizotora nzvimbo dzokutanga dzeTwin Towers, dzakagadzirwa nedehwe rokutanga remasvingo akakoromokauye simbi yakadzokororwa. Iyo yakacherwa mugranite. Rinomirira kutsunga, rinomirira simba, rinomirira kuvandudzwa, anodaro injiniya wepurojekiti yacho Ken Gardner. Kuona shongwe dzichidzoka kwaizova nomugumisiro unokurudzira pavanhu. Chiyeuchidzo chipenyu, uye ndinofunga kuti chine simba zvikuru kupfuura kuita sokuti 911 haina kumboitika. Shongwe mbiri huru dzaizotanga kuva nemasita akareba mamita 500 pamusoro peNorth Tower, izvo zvaizounza kukwirira kwayo kusvika pamamita 1,888, izvo panguva iyoyo zvaizoita kuti chive chivako chakareba kwazvo munyika chinopfuura 1,667-foot-high Taipei 101 muTaipei, Taiwan. Shongwe mbiri dzacho dzakarongwa kuva dzakakwirira nhurikidzwa 112. 