Jak a kdy používat retardér páry (ACI 302.1)

Jak poznáte, kdy je potřeba parozábrana? A pokud ano, kam ji umístíte? Podívejte se, jak vás Jason Spangler provede pokyny Amerického betonového institutu (ACI 302.1) pro určení, jak a kdy použít parozábrany u betonové podlahové desky.

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