AS 2699.3 pdf download.Built-in components for masonry construction 1.3 Terms and definitions For the purpose of this Standard, the definitions below apply. 1.3.1 batch clearly identifiable collection of units, manufactured consecutively or continuously under the same conditions, using material or compound to the same specification 1.3.2 corrosivity category C standardized rating of corrosivity of atmosphere in relation to the one-year...