Ground Screw yathu imayika maziko abwinoko omwe aliyense angathe kuwafikira.Tsopano zogwiritsidwa ntchito padziko lonse lapansi, zomangira pansi zimapanga maziko olimba, otetezeka, okhalitsa amtundu uliwonse womanga m'malo aliwonse.Yankho lathu ndi losavuta ndi kapangidwe kake: kutsata malamulo omangira, osavuta komanso otsika mtengo kukhazikitsa, ndipo okonzeka kumangirira m'maola ochepa m'malo mwa masiku kapena masabata.Njira yobiriwira yopangira maziko a konkriti ndi ozama, zomangira pansi zimapita komwe ena sangathe, abwino kwa madera ovuta kumanga, ma brownfields, ndi masamba omwe sayenera kusokonezedwa.