1.Ifanele ukuphakanyiswa kanye nokuthuthwa kwezinsimbi zensimbi, i-constructio kanye nebha enephrofayili endaweni evundlile.
2. Gwema ukuhlwitha noma ukulayisha ukushaqeka.
3. Umkhawulo womthwalo osebenzayo uwumthwalo omkhulu izintambo ezigunyazwe ukuze ziwusekele uma zisetshenziswa ngamapheya ane-engeli yokuphakamisa engu-60 degree.Ukusebenza kwe-inlifing ama-clamp angasetshenziswa ngamabili noma ama-multiple.
4. Umhlathi wesikulufa womzimba ungashintshwa, futhi ube nenkinobho yokugcwala.