1. Dongosolo la trolley la poyimitsa mapaipi limatumiza katundu wonse wopangidwa ndi konkriti kupita ku gantry ya trolley kudzera mu dongosolo lothandizira. Mfundo ya kapangidwe kake ndi yosavuta ndipo mphamvu yake ndi yolondola. Ili ndi mawonekedwe a kulimba kwakukulu, kugwiritsa ntchito mosavuta komanso chitetezo champhamvu.
2. Dongosolo la trolley la malo ochitira zinthu pogwiritsa ntchito mapaipi lili ndi malo akuluakulu ogwirira ntchito, omwe ndi osavuta kuti ogwira ntchito azigwira ntchito komanso ogwira ntchito ena azipita kukawaona.
3.Kuyika mwachangu komanso kosavuta, magawo ochepa amafunika, sikophweka kutaya, kosavuta kuyeretsa pamalopo
4. Pambuyo pokonza dongosolo la trolley kamodzi kokha, palibe chifukwa cholichotsa ndipo lingagwiritsidwenso ntchito.
5. Kapangidwe ka makina ojambulira mapaipi ali ndi ubwino wa nthawi yochepa yomangira (malinga ndi momwe malo alili, nthawi yokhazikika ndi pafupifupi theka la tsiku), antchito ochepa, komanso kusintha kwa nthawi yayitali kungachepetse nthawi yomanga ndi ndalama za ogwira ntchito.