https://www.homebuildingandrepairs.com Click here on this link to find more information about home building, remodeling and repairs. This video will provide you with the largest holes you can drill through 2 x 6 or 2 x 8 floor joist. The information came from the 2021 International plumbing code book, Appendix C, C101.1 in the structural safety section. Make sure you check with your local building codes to verify information in all videos.