A hluav taws qhov roojyog aqhov roojnrog ahluav taws kub-kev ntsuas ntsuas(qee zaum hu ua akev tiv thaiv hluav tawsrau kaw) siv los ua ib feem ntawm apassive hluav taws tiv thaivsystem kom txo tau qhov kis ntawmhluav tawsthiabhaus luam yeebnruab nrab ntawm kev sib caischav tsevntawm tus qauv thiab kom muaj kev nyab xeeb egress los ntawm alub tsevlos yog qauv lossis nkoj. HauvNorth Americantsev chaws, nws, nroghluav taws dampers, feem ntau hu ua akaw, uas tuaj yeem derated piv rau qhov hluav taws kub sib cais uas muaj nws, yog tias qhov kev thaiv no tsis yog ib qhofirewalllos yog ibnyobkev sib cais.
Tag nrho cov khoom yuav tsum tau ua raws licov khoom pov thawjcov kev cai uas tau txais los ntawm lub zosAuthority Muaj Txoj Cai(AHJ) los ntawm kev ua raws li cov cai hauv zostsev codethiab hluav taws code. Txoj cai tswjfwm yuav hloov ntawm lub tebchaws mus rau lub tebchaws. Piv txwv li, hauv Australia, National Construction Code hais tias txhua lub qhov rooj hluav taws yuav tsum raug sim rau qee yam tshwj xeeb kom ua tau raws li kev pom zoo thiab ntawv pov thawj.
thov nkag mus rau hauv kev sib cuag nrog tus neeg siv khoom yog xav paub ntxiv txog cov nqi khoom thiab qhov loj me rau
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