Kev lag luam. Tsuas yog sau lub tawb nrog pob zeb thiab kaw lawv.
Yooj yim rau kev tsim; yuav tsum tsis muaj kev txawj tshwj xeeb.
Muaj zog tiv thaiv rau ntuj degradation, corrosion, thiab huab cua tsis zoo.
Muaj peev xwm tiv taus qhov tseem ceeb deformation yam tsis muaj kev sib tsoo.
Lub silt uas accumulates nyob rau hauv lub crevices ntawm lub pob zeb nyob rau hauv lub tawb txhawb kev loj hlob ntawm cov nroj tsuag, tso cai rau cov qauv mus muab seamlessly nrog ib puag ncig ntuj puag ncig.
Pom zoo permeability, yog li tiv thaiv kev puas tsuaj los ntawm hydrostatic siab.
Txuag cov nqi tsheb thauj mus los; cov tawb tuaj yeem muab tais rau hauv kev thauj mus los thiab sib sau ua ke ntawm -site.