PFEIFER-samlingsboltene PVB (M16 - 36) og PGV (M42 - 56) anvendes i kombination med PFEIFER-fundamentankrene PGS/H2 og H4. Efter komplet indskruning etablerer disse en bøjningsstiv forbindelse mellem et fundamentanker og den tilsvarende stiverfod. Med denne enkle skrueforbindelse kan monteringstiderne for stiverne af præfabrikerede betonelementer og fundamentet reduceres betydeligt. Samlingsboltene skrues først ind i fundamentankrenes skruebøsninger kort før monteringen starter. Faren for, at gevindene beskadiges, er dermed desuden reduceret til et minimum.
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