Ndi zabwino zonse za chidebe chamatope, ndowa yopendekeka imatha kuwongoleredwa kuti izungulire pogwiritsa ntchito silinda ya hydraulic.Ngodya yopendekera ndi 45 digiri kumanzere ndi kumanja, ndipo ntchito zitha kuchitika popanda kusintha malo ofufutira, kumaliza ntchito zolondola zomwe zidebe wamba sizingathe kumaliza.Ndiwoyenera ntchito yodula monga kutsuka kotsetsereka ndi kusanja, komanso ntchito yoboola mitsinje ndi ngalande.Kuipa: Sikoyenera kumalo ogwirira ntchito olemera monga dothi lolimba komanso kukumba miyala yolimba.
Zidebe za trapezoidal zimabwera mosiyanasiyana, m'lifupi, ndi mawonekedwe, monga makona atatu kapena trapezoid.Zoyenera kugwira ntchito monga zosungira madzi, misewu yayikulu, ulimi, ndi kugwetsa mapaipi.Ubwino: Itha kupangidwa nthawi imodzi ndipo imakhala ndi magwiridwe antchito apamwamba.Kukula ndi mawonekedwe amatha kusinthidwa malinga ndi momwe amagwirira ntchito!