<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: Umgwaqo: Ngo-September 11, 2001, lesi sakhiwo salimala imfucumfucu lapho umbhoshongo oseduze waseNyakatho weWorld Trade Center uwela phansi. Izinsalela zaqala nomlilo, owaqhubeka uvutha kulo lonke ntambama ezitezi ezingaphansi kwesakhiwo. Uhlelo lwangaphakathi lokulwa nomlilo lwesakhiwo lwaluntula umfutho wamanzi wokulwa nemililo, futhi isakhiwo sabhidlika ngokuphelele ngo-5: 21:10 ntambama, ngokusho kwe-FEMA, ngenkathi ucwaningo lwe-NIST lwango-2008 lubeka isikhathi sokugcina sokuwa ngo-5: 20:52 ntambama. Ukuwa kwaqala lapho ikholomu ebalulekile yangaphakathi iqhuma futhi yabangela ukwehluleka kwesakhiwo kuyo yonke indawo, okwaqala ukubonakala ngaphandle ngokuwohloka kwesakhiwo sendlu ephezulu esophahleni ngo-5: 20:33 ntambama. Ukuwa kwalesi sakhiwo esidala i-7 World Trade Center kwaba isakhiwo sokuqala esiphakeme esaziwa ukuthi sabhidlika ngenxa yomlilo ongalawulwa, futhi ngaleso sikhathi, kwakuwukuphela kwesakhiwo esiphakeme esenziwe ngensimbi emhlabeni esabhidlika ngenxa yomlilo. Ukwakhiwa kwesakhiwo esisha i-7 World Trade Center kwaqala ngo-2002, futhi kwaqedwa ngo-2006. Lesi sakhiwo sinezitezi ezingu-52 kanye nesitezi esisodwa esingaphansi komhlaba, okwenza kube isitezi sama-28 esiphakeme kunazo zonke eNew York. Yakhelwe endaweni encane kuneyasekuqaleni, futhi ikhawulelwe yiGreenwich, Vesey, Washington, neBarclay Streets empumalanga, eningizimu, entshonalanga, nasenyakatho, ngokulandelana. Ipaki elincane ngaphesheya kweGreenwich Street lihlala endaweni eyayiyingxenye yesakhiwo sokuqala. Umklamo wesakhiwo samanje ugcizelela ukuphepha, unenhloko kakhonkolo oqinisiwe, izitebhisi ezibanzi, nezinsika zensimbi eziqinile. Ihlanganisa nezici eziningi zokwakheka okuluhlaza. Lesi sakhiwo saba isakhiwo sokuqala samahhovisi eNew York City ukuthola isitifiketi se-U.S. Green Building Councils Leadership in Energy and Environmental Design LEED, lapho sathola khona isilinganiso segolide. Kwakungenye yephrojekthi yokuqala eyamukelwa njengengxenye yohlelo loMkhandlu lwe-Leadership in Energy and Environmental Design Core and Shell Development LEED-CS. Umbuzo: Sasisikhulu kangakanani lesi sakhiwo?  <response>: Izitezi ezingu-52 