Ukunemba kwezinto ezinesisindo esitshalweni sokuxuba i-asphalt kuhlobene nekhwalithi ye-asphalt ekhiqizwayo. Ngakho-ke, lapho kukhona ukuchezuka ohlelweni lokukala, izisebenzi zomkhiqizi wezitshalo zokuxuba itiyela kufanele zihlole ngokucophelela kusenesikhathi ukuze bathole inkinga.
Uma kunenkinga ngezinzwa eyodwa noma ngaphezulu kwezintathu ebhakedeni lesikali, ukuwohloka kwegeji yobunzima ngeke kufinyelele inani elifunekayo, futhi isisindo sangempela sento okufanele ikalwe nayo izoba nkulu kunevelu ekhonjiswe ikhompyutha enesisindo. Lesi simo singabhekwa ngokulinganisa isikali ngezisindo ezijwayelekile, kodwa kufanele kuqashelwe ukuthi isikali sokulinganisa kufanele silinganiswe esikalini esigcwele. Uma isisindo sinomkhawulo, akumele sibe ngaphansi kwenani elivamile lesisindo.
Phakathi nenqubo yokukala, ukuguquguquka kwenzwa ye-gravity noma ukugudluzwa kwebhakede lesikali lapho kuya khona amandla adonsela phansi kuzonqunyelwa, okungabangela isisindo sangempela sento ukuthi ibe sikhulu kunevelu ekhonjiswe isisindo sekhompyutha. Abasebenzi bomkhiqizi wezitshalo ze-asphalt kufanele baqale basuse lokhu okungenzeka ukuze baqinisekise ukuthi ukuguquguquka kwenzwa yamandla adonsela phansi noma ukugudluzwa kwebhakede lesikali kuya lapho kuqondiswa khona amandla adonsela phansi akukhawulelwe futhi ngeke kubangele ukuchezuka kwesisindo.
Izitshalo zokuxuba i-asphalt kufanele zisebenzise imishini ephansi yokusebenzisa amandla. Ukukhiqizwa kwe-asphalt kanye nemishini yokuthutha enobuchwepheshe obuhle kakhulu obunjengomsindo ophansi, ukusetshenziswa kwamandla okuphansi, nokukhipha okuphansi futhi okulungele umthamo wokukhiqiza kufanele kukhethwe. Ukusebenzisa inqubo evamile yokuxuba, ukuphakama okuphezulu komsingathi wokuxuba cishe kungama-90A. Ukusebenzisa inqubo yokuxuba amatshe ahlanganiswe ne-asphalt, ukuphakama okuphezulu komsingathi wokuxuba cishe kungama-70A kuphela. Ngokuqhathanisa, kutholakala ukuthi le nqubo entsha inganciphisa izinga eliphezulu lokusingatha ukuxuba cishe nge-30% futhi ifinyeze umjikelezo wokuxuba, ngaleyo ndlela inciphise ukusetshenziswa kwamandla ohlelweni lokukhiqiza izitshalo ze-asphal.