1、O meaafale e mafai ona vaevaeina i totonu o fale meafale, meafale ofisa ma meaafale fafo e tusa ai ma le faʻataʻitaʻiga o le talosaga.
2、O meaafale e mafai ona vaevaeina i meafale tamaiti ma meaafale matutua e tusa ai ma tagata faʻaoga.
3、O meaafale e mafai ona vaevaeina i nofoa, laulau, kapeneta ma isi e tusa ai ma vaega o oloa.
4、O metotia suʻega ma tulaga faʻatatau o loʻo taʻua e mai le European Standard, ie BS EN-1728, BS-EN12520, BS-EN12521, BS EN-1730, BS EN-1022, EN-581, EN-1335, EN527.