Makatani otsekemera, omwe amadziwikanso kuti makatani a thonje, amagwiritsidwa ntchito nthawi zambiri m'mapulojekiti otetezera mphepo yozizira kapena kukhazikitsa nyumba zobiriwira. Ndiye, makataniwa amapangidwa ndi zinthu ziti?
Ndipotu, pali zifukwa ziwiri zazikulu za makatani a mafakitale: mtengo ndi khalidwe. Mapulojekiti ambiri amafunikiranso-zinthu zosagwira ntchito pa makatani omangira zingwe. Chifukwa chake, zodzazira zomwe zimagwiritsidwa ntchito mu makatani akumafakitale nthawi zambiri amapangidwa kuchokera kumoto-zinthu zosagwira ntchito monga ubweya wa thonje ndi ubweya wagalasi, komanso thonje lotsika mtengo,{4}}lotsika mtengo.
Nsalu ziwiri zomwe zimagwiritsidwa ntchito nthawi zambiri zimagwiritsidwa ntchito kunja: Nsalu ya Oxford, yomwe imakhala yolimba komanso yosalowa madzi, komanso PVC flame-retardant tarpaulin, yomwe imadziwikanso kuti polyester triple{1}proof proof. Katani ka thonje ka katatu kamene kamaoneka katatu kamene kamaoneka ngati kansalu ka thonje kamene kamateteza madzi, kamakhala ndi ubwino wosunga madzi, osapsa ndi moto-osagwira ntchito ndi malawi, ndiponso osachita dzimbiri-, koma nthawi zambiri amadzazidwa ndi ubweya wagalasi. M'malo mwake, katatu-chinsalu chotsekereza chotenthetsera chotsimikizira kutentha sichingatseke mawindo, machulukidwe a tunnel, ndi zitseko zotseguka, komanso atha kugwiritsidwa ntchito ngati zotsekera, monga mizati ya mlatho, kutsekera maenje otsekera, komanso kuletsa-kuzizira kwa zinyumba zazikulu. Chifukwa sichokwera mtengo, malo ambiri omangira amachigwiritsa ntchito potsekereza konkire ndipo amagwiritsidwa ntchito potsekereza konkire ndi kukonza masitepe a mlatho ndi malo amisewu.
