Mfundo yoyamba ndikudziwiratu momwe mzere wa malo omangamanga umayendera, chifukwa mtunda wa mayendedwe a asphalt umakhudza mwachindunji mtundu wa phula, kotero pomanga malo osakanikirana a phula, ziyenera kuganiziridwa mokwanira kuti zikwaniritse zosowa za phula. malo. Kugawidwa kwa asphalt kuyenera kutsimikiziridwa mokwanira molingana ndi zojambula zomangira kuti zithandize malo omwe ali pafupi pakati pa zomera zosakaniza phula.

Mfundo yachiwiri ndikumvetsetsa ndikuzindikira zinthu zofunika pakumanga malo osakanikirana, kuphatikiza madzi, magetsi ndi malo apansi; mfundo yomaliza ndi yokhudza malo ozungulira malo omangawo. Popeza malo osakaniza phula ndi malo opangira makina opangidwa ndi makina apamwamba, kuipitsa monga fumbi ndi phokoso kudzakhala koopsa kwambiri. Izi zimafuna kuti posankha malo, tiyesetse kupeŵa malo okhala, masukulu, malo obereketsa ndi malo ena omwe anthu ndi ziweto zimakhala zovuta kwambiri, kuti tichepetse kukhudzidwa kwa malo ozungulira momwe tingathere.