In both C 216 and C 652, brick can qualify as severe weather grade (Grade SW) or moderate weather grade (Grade MW). There are a number of ways to qualify for the grades in these standards. The primary means of qualification is based on boiled water absorption, saturation coefficients and compressive strength requirements. Information on these requirements is provided in Table 1 of C 216 and Table 2 of C 652. It is equivalent through the alternates in the product standards to qualify using the freezing and thawing test procedure described in ASTM C 67.
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