For the US, BC Calc® software (.com and Offline Mode) follows the designer's selected building code, which references the National Design Specification (NDS) for Wood Construction. We do not apply any additional safety factors.
Our product design values are derived in accordance with ICC-ES criteria. More information is available in our code reports, ICC ES ESR-1336 and ESR-1040, which can be found here:
https://www.bc.com/?s=code+reports
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