Ib tus neeg kawm ntawv qib siab, raws li lub npe qhia, yog lub luag haujlwm rau qib thiab tswj kev nce qib hauv engineering.
Ib qib yog ib hom kev siv tshuab, feem ntau yog siv rau qib thiab khawb nrog duav.
Feem ntau siv rau:
1. Loj nplai ntxhib leveling ntawm ntau qhov chaw thiab theem ntawm kev tsim kho kev nkag. Thaum kho txoj kev zoo tib yam, nws yog ib qho tsim nyog yuav tsum ua cov haujlwm ua haujlwm.
2. Nyob rau hauv qhov chaw cog qoob loo loj, txoj kev tsis sib xws vim muaj ntau lub tsheb mining, thiab nws yuav tsum tau siv cov grader mus rau theem thiab kho txoj kev ib ntus.
3. Kev ua kom zoo thiab ntxhib leveling ntawm cov av ua haujlwm, cov av txiv qaub, cov cement av, txoj hauv kev, gravel txheej, thiab cov cement stabilized txheej.
Kuj tseem muaj lwm txoj haujlwm ua haujlwm: cheb daus thiab dej khov, khawb trenches, txhuam qhov chaw, thiab tshem cov nyom.
