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To be full pen and prequalified, you would have to address the back side of the root(back gouge)....with the BTC-P10-GF you can't gain access to the back side of the root...
can you hold the plate back and use the detail like in Figure 3.5 (bottom right detail-"side matched")page 116 of D1.1:2008 or Figure 3.6 (bott right detail-"alt detail B") on the next page.