Iwo uprights akagadzirwa ne3mm gobvu square machubhu, nepo mamwe machubhu anoshandisa 2.5mm ukobvu, kuve nechokwadi kugadzikana uye kuvimbika panguva yekushandiswa.
Iyo CENTER-BASED system dhizaini yedhizaini yakavakirwa pakuda kwekugadziriswa kwepasi chete, kubvumira kuiswa pakati penzvimbo kana corridor.Yakavakwa pamusoro peakawanda-level ekuchengetedza masherufu, inokwidziridza dzakasiyana siyana dzekudzidzira zviteshi uye kushandiswa kwenzvimbo.
