1.o faʻamafanafana mo le ea malulu,Le pusaaisa;

2.Roof susu, lalo ole eleelesusu i totonu fou fausaga, susu

3.processing i fausaga fausiaina soofaatasi ma

4.polymer waterproofing mea lapoa faʻailoga.

I atigipusa, pe mafai ona teu faʻapena

tagata e faaaogāina auaunaga manaoga, totogi e mafai ona feutagai eseese.

1) E sili ona lelei mea tau masini: maualuga fusia le malosi ma le malosi tensile, lelei eli ma faʻaopoopoga faatinoga, malosi fetuutuunai i le foliga suia ma taʻe o le Ofisa, ma le lelei lelei e sailia le foliga suia o le mea.

2) Faʻapitoa meatotino tau: E faʻatinoina ma sili atu vailaʻau tetee, o le tau anapogi ma faʻamalosi tetee.

3) Faʻamoemoeina faʻatinoina gaioiga: lelei faʻapipiʻi meatotino, vai teteʻe, paʻu maʻa ma le maualalo le vevela tetee, ma le mautu maualuga i le tele.

4) Faigofie fai tekonolosi.