1. Thaum peb xaiv 6- cov kav dej taw tes, peb tuaj yeem tshawb xyuas cov cim tseem ceeb ntawm cov kav dej. Feem ntau, qhov saum npoo ntawm cov kav dej yuav raug luam tawm nrog cov ntaub ntawv tseem ceeb xws li hom, kev qhia tshwj xeeb, thiab cov qauv siv. Koj tuaj yeem tshawb xyuas seb cov ntaub ntawv txheeb xyuas puas meej, seb puas muaj kev tso tseg thiab lwm yam. Hauv cov txheej txheem yuav khoom, peb tuaj yeem tshawb xyuas seb cov yeeb nkab dej puas yog xim thiab ci.
2. Thaum muas 6 cov kav dej, koj kuj yuav tsum tau xyuas seb cov phab ntsa thickness ntawm cov kav dej tsis zoo li qub. Peb kuj tuaj yeem siv tus pas ntsuas los ntsuas lub taub sab hauv, sab nraud thiab phab ntsa tuab ntawm cov yeeb nkab dej los xyuas seb qhov loj ntawm cov yeeb nkab dej raws li tus qauv. Raws li ib txwm muaj, qhov ntev ntawm cov kav dej ppr yog 4 meters. Koj tseem tuaj yeem ntsuas seb qhov ntev ntawm cov kav dej puas tsim nyog thaum lub sijhawm yuav khoom.
3. Thaum yuav 6 tus nqi, peb tuaj yeem xaiv cov khoom lag luam los ntawm cov khoom lag luam tseem ceeb hauv khw. Cov khoom lag luam dav dav muaj cov cim tiv thaiv cuav. Thaum peb yuav cov kav dej, peb tuaj yeem tshawb xyuas qhov tseeb ntawm cov kav dej los ntawm kev tiv thaiv cov khoom cuav. Thaum yuav cov kav dej, nws yog qhov zoo tshaj plaws rau cov kav dej thiab cov kav dej fittings yuav tsum sib piv cov khoom lag luam ntawm tib lub chaw tsim khoom, kom tsis txhob muaj teeb meem ntawm cov kav dej tsis sib haum thiab cov fittings.