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Code Compliance Research Report CCRR-0101 Page 10 of 11 <br />545 E. Algonquin Road • Arlington Heights • Illinois • 60005 <br />intertek.com/building PCA-101 <br />Version: 6 April 2017 SFT-CCRR-OP-40b <br />Figure 5 – Stair Tread Installation with no additional support <br />(Minimum tread length is 36”) <br />Figure 6 – Alternate 1 X 5-½ Stair Tread Installation for 17.25” Span <br />(2X6 additional support) <br />2020-162893 <br />02/10/22