STANDARD CORE-HOLE DETAIL OVER-SIZED CORE-HOLE APPLICATION RISER SHAFT APPLICATION (with multiple plastic pipes) Table of Sizes Pyrorap Size (mm) To suit nom. pipe (mm) Actual pipe O.D. (mm) Collar Opening (mm) 20 20 26.6 35 25 25 33.4 45 32 32 42.1 52 40 40 43.1 67 50 50 56 75 65 65 69.1 92 80 80 82.7 102 100 100 110.4 132
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