Lub tshuab tua hluav taws tua hluav taws tau muab faib ua ob hom: cov dej tua hluav taws sab nraud thiab cov dej tua hluav taws sab hauv tsev. Nws lub luag haujlwm tseem ceeb suav nrog kev siv dej tua hluav taws, twj tua hluav taws, twj tso kua dej sib txuas, xa hluav taws xob network tswj cov twj, hluav taws kub twj, thiab twj tso kua mis txuas.
Cov chaw tua hluav taws tuaj yeem siv cov chaw tso dej hauv nroog, cov pas dej tua hluav taws, cov chaw tso dej hauv ib puag ncig thiab cov dej rov qab los. Lub tshuab tso pa taws yuav tsum saws lub tshuab tso kua mis nws tus kheej. Thaum lub tshuab hluav taws kub nqus dej ncaj qha los ntawm lub nroog cov yeeb nkab hauv lub nroog, ib qho kev tiv thaiv thim rov qab nrog lub qhov cua thaiv kom ua haujlwm yuav tsum muab nruab rau ntawm lub tshuab hluav taws kub cov yeeb nkab.
Cov dej tua hluav taws feem ntau siv cov kwj deg hauv nroog, thiab cov kav xa dej siv cov raj dej siab. Cov li qub yog feem ntau lub rooj vag li qub, ntiaj teb li qub, npauj npaim li qub, kos li qub, lim dej, qhov kev nyab xeeb li qub, thiab lwm yam, thiab rov qab tiv thaiv kev tiv thaiv kuj tseem siv. Qhov feem ntau muaj flange thiab grooved yeeb sib txuas. Thaum hauv pem teb siab dua, yuav tsum teeb tsa cov dej tua hluav taws ntau ntau; thaum lub peev xwm tua hluav taws muaj peev xwm loj thiab lub qhov hluav taws xob yuav tsum muaj kev kub siab, cov dej xa dej yuav tsum sib cais.
