Xa kuthengwa isikhululo sokuxuba i-asphalt, abachwephesha bomenzi benza izikhumbuzo ezibalulekileyo kwiimfuno zokuthambisa izixhobo, kubandakanywa nokuthanjiswa kwecandelo ngalinye. Ngokubhekiselele koku, abasebenzisi baye baqulunqa imigangatho engqongqo yokuyilawula, ngolu hlobo lulandelayo:
Okokuqala, ioli efanelekileyo yokuthambisa kufuneka yongezwe rhoqo kwicandelo ngalinye lesityalo sokuxuba i-asphalt; ngokubhekiselele kwixabiso leoli yokuthambisa, kufuneka igcinwe igcwele, kwaye i-oyile ye-oyile kwi-oyile ye-oyile kufuneka ifikelele kwinqanaba lamanzi elichazwe kumgangatho, kungekhona kakhulu okanye encinci, ngaphandle koko kuya kuchaphazela ukusebenza kwamacandelo; ngokubhekiselele kwikhwalithi yeoli, kufuneka ihlambuluke kwaye ingaxutywa kunye nokungcola okufana nokungcola, uthuli, iitshiphusi kunye namanzi, ukwenzela ukuba ugweme umonakalo kwiindawo zesityalo sokuxuba ngenxa yokungathobeki kakuhle.
Okwesibini, i-oyile yokuthambisa ekwitanki yeoli kufuneka itshintshwe rhoqo, kwaye itanki yeoli kufuneka icocwe ngaphambi kokutshintshwa ukuze kuthintelwe ukungcoliseka kweoli entsha. Ukuze ugweme ukuchatshazelwa yimiba yangaphandle, izikhongozeli ezifana neetanki ze-oyile kufuneka zigcinwe zivaliwe kakuhle ukuze ukungcola kungangeni.