Ama-girders namafreyimu ka-Double Grane Crane ama-weld-ndawonye ahlanganiswe nezinhlaka ezingenawo amalunga asemanzini, ngezinga eliphakeme lokuqina okuqondile nokuvundlile. Indlela yokuhamba yeTrolley iqhutshwa ngogesi, i-gantry ye-gantry ephindwe kabili ingahlome ngamatshe namanye amathuluzi okuphakamisa iziqukathi eziphakamisayo, ezilungele ukusetshenziswa okuhlukile.
Amandla wokuphakamisa we-gantry crane e-geam-geanga angaba ngamasentimitha aphindwe kabili, futhi asetshenziswa kakhulu ezindaweni zokugcina umoya, izitshalo zokwenza usimende, izimboni zokwakha, izimboni zokwakha, izimboni zokwenza izintambo zokulayisha nokulayisha izimpahla. I-Double Beam Gantry Crane isetshenziswa kabanzi ekuphakamiseni okusindayo kakhulu.
I-Double Beam Gantry Crane ilula futhi iyasebenziseka, isebenzisa imilenze ukuze ibambe amabhuloho, ama-slings, kanye nokuphakanyiswa. Emiklameni egijimayo ephezulu, ama-gantry ama-gantry ama-gist angavumela ukuphakama okukhulu kokuphakamisa ukuphakama ngoba ama-hoist amiswe ngaphansi kogongolo. Abadingi izinto eziningi ze-Bridge Beams kanye nezinhlelo ze-ruway, ngakho-ke imilenze yokusekelwa yokwakha kumele ithathe ukunakekelwa okwengeziwe. I-Double Beam Gantry Crane nayo ibhekwa lapho kunesizathu sokungafaki uhlelo lwe-Runway olufakwe ophahleni, futhi lusetshenziselwa izicelo ezivulekile zomoya lapho amakholomu aphelele namakholomu angafakwanga, noma angasetshenziswa ngaphansi kohlelo olukhona lokuthweswa umqhele.
Ama-cranes aphindwe kabili adinga imvume enkulu ngaphezulu kwe-cranes beam-level enyuka, njengoba i-hoist trolley igibela izikhala zebhuloho e-crane. Isakhiwo esiyisisekelo se-Bantry Crane ephindwe kabili semilenze namasondo ahamba ngobude bohlelo lwe-Ground Beam, kanti ama-brist amabili amisa imilenze, futhi ama-hoist trolley amisa amabhuzu futhi ahambe phezu kwamabhuzu.