Ikhoyili yensimbi egoqwe ngokushisayoimikhiqizo yenziwe ngama-slabs (ikakhulukazi ama-billet asakazayo aqhubekayo) njengezinto ezingavuthiwe, ezishiswayo bese zenziwa imicu ngamayunithi aginqikayo namayunithi wokuqedela.Umucu wensimbi oshisayo osuka emshinini wokugcina wesigayo upholiswa kumazinga okushisa amisiwe ngokugeleza kwe-laminar bese igoqwa ibe amakhoyili emigqa yensimbi yikhoyili.