전문 번역가, 번역 회사, 웹 페이지 및 자유롭게 사용할 수 있는 번역 저장소 등을 활용합니다.
however, these joists cannot be considered as structural elements, they must be fully supported and screwed down on a completely flat surface (on a layer of concrete of min. 10cm.)
deze mogen echter niet beschouwd worden als structurele elementen. ze moeten volledig vlak op de onderground ondersteund worden en vastgeschroefd (op een laag beton van min. 10cm).