Dab tsi yog lub qhov rooj hluav taws, nws tau hais tias nyob rau hauv qee qhov xwm txheej tuaj yeem ua tau ntawm hluav taws-resistant ruaj khov ntawm cov khoom hluav taws kub, yog li nws tuaj yeem tawm ntawm cov khoom siv hluav taws xob, yog li cov khoom lag luam no tau tawm ntawm kev sib cais stairwell daim ntawv thov ntawm lub qhov rooj tshwj xeeb.
Hauv qee txhia lub tsev ua cov ntaub ntawv ntsug, cov khoom no tseem yuav tsum tiv thaiv kev tiv thaiv hluav taws, kom ntseeg tau tias yog vim li cas los xij, rau kev ua haujlwm ntawm cov txheej txheem hauv kev tsim kho cov tsev nyob hauv cov tuam tsev. Hom khoom no yog siv nyob rau ntau cov khoom. Vim tias qhov kev thov siab rau cov khoom lag luam no, cov khoom siv hluav taws xob sib txawv, yog li cov khoom siv hluav taws xob sib txawv, tsim nyog rau kev siv hauv ntau thaj teb sib txawv.
