Ebe a na-agwakọta asphalt nwere uru na njirimara siri ike, nke ewepụtara n'okpuru.
1. Nhazi modular na-eme ka njikwa, nchekwa, ngwa ngwa ma dị mfe karị;
2. Nhazi pụrụ iche nke ngwakọta ngwakọta na cylinder ngwakọta nke ike dị ike nke ukwuu na-eme ka ngwakọta dị mfe, ntụkwasị obi na nke ọma;
3. Ihuenyo na-ama jijiji na moto vibration ebubata na-eme ka arụmọrụ dịkwuo mma ma na-ebelata ọnụego ọdịda nke akụrụngwa;
4. Na-enweghị iwepụ ájá, a na-etinye ya n'elu drum na ọnọdụ ihicha iji belata okpomọkụ ma chekwaa ohere na mmanụ ọkụ;
5. A na-etinye ala nke silo, nke na-ebelata akara ukwu nke ngwá ọrụ ahụ, ma n'otu oge ahụ na-akagbu oghere ibuli nke ụzọ ihe eji emecha, na-ebelata ọdịda nke akụrụngwa;
6. Na-ebuli mkpokọta na iji okpukpu abụọ na-ebuli elu na-abawanye ndụ ọrụ nke elevator ma melite nkwụsi ike ọrụ;
7. A na-anakwere sistemu igwe eji arụ ọrụ igwe na-akpaghị aka nke ọma // ntuziaka njikwa, yana mmemme nchoputa akpaaka na-ezighi ezi maka ịrụ ọrụ dị mfe na nchekwa.