Ibyiza bya ductile fer manhole igifuniko

• Umuyoboro w'icyuma manhole utwikiriye
  

Ikozwe mubyuma bisize kandi bigoretse ibyuma bya kare cyangwa gusudira ibyuma bisize hamwe nicyuma.

Dore bimwe mubiranga

1, Kugaragara neza, gutemba, imbaraga nyinshi, ibisobanuro hamwe nigiciro gito.

2. Kurwanya ubujura.

3. Ubushobozi bwiza bwo gutwara.

4.Ubushobozi bwo gutwara amazi.

Ingingo ebyiri zo kwitondera mugushiraho ibyuma bya manhole bitwikiriye:

.: Kugirango hamenyekane imbaraga zingenzi zisabwa, mbere yo gushyiramo imvura, hagomba gushyirwaho umusingi wa sima.Noneho shyiramo imvura.

②: Nyuma yo gushushanya imvura, komeza imigozi igomba gushyirwaho, kandi sima igomba gusukwa hepfo yikadiri kugirango ikumire imva yimvura yo kugwa kubwimpamvu zitandukanye.