1. Imiterere yicyuma cyiza cyane, ubuzima burebure.Ibice byose byingenzi birashyushye cyane nyuma yo kuvurwa ukurikije amahame yuburayi kugirango harebwe neza ruswa
2. Imiterere yateguwe.Ibigize byose birashobora gukusanyirizwa byoroshye kurubuga hamwe na connexion hamwe na bolts hamwe nutubuto tutarinze gusudira kwangiza igicucu cya zinc ku bikoresho, bityo bikaba byemeza ko bishobora kurwanya ruswa.Umusaruro usanzwe wa buri kintu
3. Ibikoresho bya Ventilation: imashini yerekana firime cyangwa nta vent