I-1.Izixhobo ezinkulu, izixhobo kufuneka zifakwe, ezifana nesibuko, isihlalo sokutywinwa ngomatshini, isakhelo sokunciphisa.
2. Xa ubukhulu bomzimba wokudibanisa bukhulu kakhulu kwaye i-bolt ide kakhulu, i-stud bolt iya kusetyenziswa.
3. Isetyenziselwa ukudibanisa iipleyiti ezishinyeneyo kunye neendawo apho kungenabunzima khona ukusebenzisa iibholithi ezinehexagonal, ezifana nesakhelo sophahla lwekhonkrithi, umqadi wophahla ojingayo we-monorail umqadi ojingayo.
1.Gcina ixesha lokufakela kunye neendleko.
2.Akukho bhola efunekayo kwizakhiwo eziboshiweyo