Kapangidwe ka zida ndi magawo akuluakulu a magwiridwe antchito
Zida zimakhala ndi: choyikapo chachikulu, ma countertops, slide, chapamwamba ndi m'munsi mbale, zida za waya, ma silinda amphamvu, makina opangira ma hydraulic, machitidwe amagetsi, makina a pneumatic, monga wodzigudubuza kumanzere ndi kumanja;