TJI s with Side Top Flange tches TJI flanges should never be cut or notched; however, it is recognized that damage occurs from time-to-time. The tables in this technical bulletin only apply to notches in the side of the top flange; however, it does not apply to conditions including notches across the top of the flange, notches within 3 feet of an intermediate support (multiple/continuous span joist), notches in the bottom flange, or multiple notches in a single joist. For any of the preceding notch conditions, see the three options below: 1) Header the TJI joist off around the notched flange area. See Technical Bulletin, TB-816, for maximum allowable joist header spans. For special conditions that fall outside of TB-816, contact your Weyerhaeuser representative. 2) Replace the damaged joist or add a new TJI joist within 3 inches of the notched joist. For joists spaced at 24" on-center (or greater), a new joist may be required on each side of the damaged joist due to sheathing span limits. Use Weyerhaeuser software or literature to verify the allowable joist span when adding a new simple span joist beside a damaged multiple span joist. 3) Contact the Weyerhaeuser Technical Support office in your area for specific notch analysis. In the following tables, the " " columns give the maximum allowable notched flange spans that do not require a repair, while the "" columns show the maximum allowable notched flange spans when a repair is required. Figure 1 below shows how to determine a notch location, "X" and the side notch depth, "d". Figure 2 and Figure 3 show allowable repair options when a repair is required. Either option is permitted to be used with the tables. Figure 1: Allowable tch Location and Side tch Determination Page 1 of 8
Figure 2: Allowable Panel Figure 3: Allowable 2x4 Page 2 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 10 PSF Dead Load Distance "x" to tch From End of x 3' 3' < x 4' 4' < x 5' 5' < x 6' 6' < x 7' tch d ¼" 16" max 17'-0" 17'-0" 15'-6" 17'-0" 14'-9" 17'-0" 14'-6" 16'-6" 9½" 24" max 14'-0" 12'-9" 14'-0" 12'-0" 14'-0" - 13'-6" - - ¼" < d ⅝" 16" max 16'-6" 17'-0" 14'-0" 17'-0" 13'-0" 17'-0" 12'-9" 16'-0" - 15'-6" 24" max 12'-0" 14'-0" 10'-9" 14'-0" 10'-3" 13'-0" - 12'-9" - - TJI d ¼" 16" max 19'-3" 19'-3" 18'-3" 19'-3" 17'-0" 19'-3" 16'-3" 19'-0" 110 11⅞" 24" max 15'-9" 15'-0" 15'-9" 13'-9" 15'-9" 13'-3" 15'-3" - 15'-0" ¼" < d ⅝" 16" max 19'-3" 16'-9" 19'-3" 15'-3" 19'-3" 14'-6" 18'-9" 14'-3" 18'-0" 24" max 14'-3" 15'-9" 12'-6" 15'-9" 11'-9" 15'-3" - 14'-6" - 14'-3" d ¼" 16" max 21'-0" 21'-0" 20'-6" 21'-0" 19'-0" 21'-0" 18'-0" 21'-0" 14" 24" max 17'-0" 17'-0" 15'-3" 17'-0" 14'-6" 17'-0" 14'-3" 16'-6" ¼" < d ⅝" 16" max 21'-0" 19'-0" 21'-0" 17'-0" 21'-0" 16'-0" 21'-0" 15'-6" 20'-0" 24" max 16'-3" 17'-0" 14'-0" 17'-0" 13'-0" 17'-0" 12'-6" 16'-0" - 15'-6" Distance "x" to tch From End of x 4' 4' < x 5' 5' < x 6' 6' < x 7' 7' < x 8' tch d ½" 16" max 18'-0" 16'-3" 18'-0" 15'-6" 18'-0" 15'-0" 18'-0" - 17'-9" 9½" 24" max 13'-6" 15'-3" 12'-6" 15'-3" 12'-3" 14'-6" - 14'-3" - - ½" < d ¾" 16" max 16'-0" 18'-0" 14'-6" 18'-0" 14'-0" 18'-0" - 17'-3" - 17'-0" 24" max 12'-0" 15'-3" 11'-3" 14'-6" - 14'-0" - - - - d ½" 16" max 21'-0" 19'-6" 21'-0" 18'-0" 21'-0" 17'-3" 21'-0" 17'-0" 20'-3" 11⅞" 24" max 16'-0" 17'-3" 14'-6" 17'-3" 14'-0" 16'-9" - 16'-3" - 16'-0" ½" < d ¾" 16" max 19'-0" 21'-0" 17'-0" 21'-0" 16'-0" 21'-0" 15'-6" 20'-0" - 19'-6" TJI 24" max 14'-0" 17'-3" 13'-0" 17'-3" 12'-9" 16'-3" - 15'-9" - - 210 d ½" 16" max 23'-0" 22'-0" 23'-0" 20'-3" 23'-0" 19'-3" 23'-0" 18'-9" 22'-6" 14" 24" max 18'-3" 18'-9" 16'-3" 18'-9" 15'-6" 18'-9" 15'-0" 18'-0" - 17'-6" ½" < d ¾" 16" max 22'-0" 23'-0" 19'-3" 23'-0" 18'-0" 23'-0" 17'-3" 22'-6" 17'-0" 21'-6" 24" max 16'-0" 18'-9" 14'-6" 18'-9" 14'-0" 18'-0" - 17'-3" - 17'-0" d ½" 16" max 24'-6" 24'-6" 22'-3" 24'-6" 21'-0" 24'-6" 20'-3" 24'-6" 16" 24" max 19'-9" 18'-0" 19'-9" 16'-9" 19'-9" 16'-3" 19'-6" 16'-0" 19'-0" ½" < d ¾" 16" max 24'-6" 21'-6" 24'-6" 19'-9" 24'-6" 18'-9" 24'-6" 18'-3" 23'-6" 24" max 17'-9" 19'-9" 16'-0" 19'-9" 15'-0" 19'-9" 14'-9" 18'-9" - 18'-3" For more information see TJI Specifiers Guide TJ-4000 Page 3 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 10 PSF Dead Load Distance "x" to tch From End of x 4' 4' < x 5' 5' < x 6' 6' < x 7' 7' < x 8' tch d ½" 16" max 18'-6" 18'-0" 18'-6" 17'-0" 18'-6" 16'-3" 18'-6" 16'-3" 18'-6" 9½" 24" max 15'-0" 16'-0" 13'-9" 16'-0" 13'-3" 15'-9" - 15'-3" - - ½" < d ⅞" 16" max 17'-0" 18'-6" 15'-3" 18'-6" 14'-6" 18'-6" 14'-3" 18'-3" - 18'-0" 24" max 12'-6" 16'-0" 11'-9" 15'-6" - 14'-9" - 14'-6" - - d ½" 16" max 21'-9" 21'-6" 21'-9" 19'-9" 21'-9" 18'-9" 21'-9" 18'-3" 21'-9" 11⅞" 24" max 17'-9" 18'-3" 16'-0" 18'-3" 15'-3" 18'-3" 14'-9" 17'-6" - 17'-3" ½" < d ⅞" 16" max 20'-6" 21'-9" 18'-0" 21'-9" 17'-0" 21'-9" 16'-3" 21'-6" 16'-3" 20'-6" TJI 24" max 15'-0" 18'-3" 13'-9" 18'-3" 13'-3" 17'-3" - 16'-6" - 16'-3" 230 d ½" 16" max 24'-3" 24'-3" 22'-3" 24'-3" 21'-0" 24'-3" 20'-3" 24'-3" 14" 24" max 19'-9" 18'-0" 19'-9" 16'-9" 19'-9" 16'-3" 19'-6" 16'-0" 18'-9" ½" < d ⅞" 16" max 23'-6" 24'-3" 20'-6" 24'-3" 19'-0" 24'-3" 18'-0" 24'-0" 17'-9" 23'-0" 24" max 17'-0" 19'-9" 15'-3" 19'-9" 14'-6" 19'-3" 14'-3" 18'-3" - 18'-0" d ½" 16" max 26'-0" 26'-0" 24'-9" 26'-0" 23'-0" 26'-0" 22'-0" 26'-0" 16" 24" max 21'-0" 20'-0" 21'-0" 18'-6" 21'-0" 17'-9" 21'-0" 17'-3" 20'-6" ½" < d ⅞" 16" max 26'-0" 22'-9" 26'-0" 20'-9" 26'-0" 19'-9" 26'-0" 19'-0" 25'-0" 24" max 18'-9" 21'-0" 16'-9" 21'-0" 15'-9" 21'-0" 15'-6" 20'-0" - 19'-3" Distance "x" to tch From End of x 6' 6' < x 7' 7' < x 8' 8' < x 9' 9' < x 10' tch d ½" 16" max 23'-0" 23'-0" 23'-0" 22'-6" 23'-0" 22'-3" 23'-0" 11⅞" 24" max 19'-6" 20'-3" 18'-6" 20'-3" 18'-0" 20'-3" 18'-0" 20'-3" - 20'-3" ½" < d ⅞" 16" max 22'-0" 23'-0" 20'-9" 23'-0" 20'-0" 23'-0" 19'-9" 23'-0" - 23'-0" 24" max 16'-9" 20'-3" 16'-0" 20'-3" 16'-0" 20'-3" - 20'-0" - - TJI d ½" 16" max 26'-3" 26'-3" 26'-0" 26'-3" 25'-0" 26'-3" 24'-6" 26'-3" 360 14" 24" max 21'-3" 20'-9" 21'-3" 20'-0" 21'-3" 19'-9" 21'-3" - 21'-3" ½" < d ⅞" 16" max 25'-0" 26'-3" 23'-3" 26'-3" 22'-3" 26'-3" 21'-9" 26'-3" 21'-6" 26'-3" 24" max 18'-9" 21'-3" 17'-9" 21'-3" 17'-6" 21'-3" - 21'-3" - 21'-3" d ½" 16" max 29'-0" 29'-0" 28'-9" 29'-0" 27'-6" 29'-0" 26'-6" 29'-0" 16" 24" max 21'-3" 21'-3" 21'-3" 21'-3" 21'-0" 21'-3" ½" < d ⅞" 16" max 27'-9" 29'-0" 25'-9" 29'-0" 24'-3" 29'-0" 23'-6" 29'-0" 23'-0" 29'-0" 24" max 20'-6" 21'-3" 19'-6" 21'-3" 18'-9" 21'-3" 18'-9" 21'-3" - 21'-3" For more information see TJI Specifiers Guide TJ-4000 Page 4 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 10 PSF Dead Load Distance "x" to tch From End of tch x 8' 8' < x 9' 9' < x 10' 10' < x 11' 11' < x 12' d ¾" 16" max 26'-3" 26'-3" 26'-3" 26'-3" 26'-3" 11⅞" 24" max 23'-0" 22'-9" 23'-0" 22'-6" 23'-0" 22'-3" 23'-0" - - ¾" < d 1⅜" 16" max 26'-0" 26'-3" 25'-0" 26'-3" 24'-6" 26'-3" 24'-0" 26'-3" 24'-0" 26'-3" 24" max 20'-0" 23'-0" 19'-9" 23'-0" - 23'-0" - 23'-0" - - TJI d ¾" 16" max 29'-9" 29'-9" 29'-9" 29'-9" 29'-9" 560 14" 24" max 25'-0" 25'-0" 24'-9" 25'-0" 24'-6" 25'-0" 24'-3" 25'-0" ¾" < d 1⅜" 16" max 29'-6" 29'-9" 28'-0" 29'-9" 27'-3" 29'-9" 26'-6" 29'-9" 26'-3" 29'-9" 24" max 22'-3" 25'-0" 21'-9" 25'-0" 21'-6" 25'-0" - 25'-0" - 25'-0" d ¾" 16" max 32'-9" 32'-9" 32'-9" 32'-9" 32'-9" 16" 24" max 25'-0" 25'-0" 25'-0" 25'-0" 25'-0" ¾" < d 1⅜" 16" max 32'-9" 31'-0" 32'-9" 29'-9" 32'-9" 29'-0" 32'-9" 28'-6" 32'-9" 24" max 24'-6" 25'-0" 23'-6" 25'-0" 23'-0" 25'-0" 23'-0" 25'-0" - 25'-0" For more information see TJI Specifiers Guide TJ-4000 Page 5 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 20 PSF Dead Load Distance "x" to tch From End of x 3' 3' < x 4' 4' < x 5' 5' < x 6' 6' < x 7' tch d ¼" 16" max 15'-6" 14'-9" 15'-6" 13'-9" 15'-6" 13'-3" 15'-3" - 15'-0" 9½" 24" max 12'-6" 12'-9" 11'-3" 12'-9" 10'-9" 12'-6" - 12'-3" - - ¼" < d ⅝" 16" max 14'-3" 15'-6" 12'-3" 15'-6" 11'-9" 15'-0" - 14'-3" - 14'-3" 24" max 10'-6" 12'-9" 9'-6" 12'-3" - 11'-9" - - - - TJI d ¼" 16" max 17'-6" 17'-6" 16'-0" 17'-6" 15'-0" 17'-6" 14'-9" 17'-0" 110 11⅞" 24" max 14'-3" 13'-0" 14'-3" 12'-3" 14'-3" 12'-0" 13'-9" - - ¼" < d ⅝" 16" max 17'-3" 17'-6" 14'-6" 17'-6" 13'-6" 17'-6" 13'-0" 16'-6" - 16'-0" 24" max 12'-6" 14'-3" 11'-0" 14'-3" 10'-6" 13'-6" - 13'-0" - - d ¼" 16" max 19'-0" 19'-0" 18'-0" 19'-0" 16'-9" 19'-0" 16'-3" 19'-0" 14" 24" max 15'-0" 14'-9" 15'-0" 13'-6" 15'-0" 13'-3" 15'-0" - 15'-0" ¼" < d ⅝" 16" max 19'-0" 16'-6" 19'-0" 15'-0" 19'-0" 14'-3" 18'-6" 14'-0" 17'-9" 24" max 14'-0" 15'-0" 12'-3" 15'-0" 11'-6" 15'-0" - 14'-3" - 14'-3" Distance "x" to tch From End of x 4' 4' < x 5' 5' < x 6' 6' < x 7' 7' < x 8' tch d ½" 16" max 15'-9" 17'-0" 14'-6" 17'-0" 13'-9" 16'-9" - 16'-3" - 16'-0" 9½" 24" max 11'-9" 14'-0" 11'-3" 13'-6" - 13'-0" - - - - ½" < d ¾" 16" max 14'-0" 17'-0" 13'-0" 17'-0" 12'-6" 16'-0" - 15'-6" - - 24" max 10'-6" 14'-0" 10'-3" 13'-0" - 12'-9" - - - - d ½" 16" max 19'-0" 19'-3" 17'-0" 19'-3" 16'-0" 19'-3" 15'-6" 18'-9" - 18'-3" 11⅞" 24" max 14'-0" 15'-9" 13'-0" 15'-9" 12'-6" 15'-0" - 14'-9" - - ½" < d ¾" 16" max 16'-6" 19'-3" 15'-0" 19'-3" 14'-3" 18'-9" 14'-3" 18'-0" - 17'-6" TJI 24" max 12'-3" 15'-9" 11'-9" 15'-3" - 14'-6" - 14'-3" - - 210 d ½" 16" max 21'-0" 19'-3" 21'-0" 17'-9" 21'-0" 17'-0" 20'-9" 16'-9" 20'-0" 14" 24" max 15'-9" 16'-6" 14'-6" 16'-6" 13'-9" 16'-6" - 16'-3" - 16'-0" ½" < d ¾" 16" max 19'-0" 21'-0" 17'-0" 21'-0" 16'-0" 21'-0" 15'-6" 20'-0" - 19'-3" 24" max 14'-0" 16'-6" 13'-0" 16'-6" 12'-6" 16'-0" - 15'-6" - - d ½" 16" max 22'-6" 21'-3" 22'-6" 19'-6" 22'-6" 18'-6" 22'-6" 18'-3" 21'-9" 16" 24" max 16'-6" 15'-9" 16'-6" 15'-0" 16'-6" 14'-9" 16'-6" - 16'-6" ½" < d ¾" 16" max 21'-0" 22'-6" 18'-9" 22'-6" 17'-3" 22'-6" 16'-9" 21'-9" 16'-6" 21'-0" 24" max 15'-3" 16'-6" 14'-0" 16'-6" 13'-6" 16'-6" - 16'-6" - 16'-6" For more information see TJI Specifiers Guide TJ-4000 Page 6 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 20 PSF Dead Load Distance "x" to tch From End of tch x 4' 4' < x 5' 5' < x 6' 6' < x 7' 7' < x 8' d ½" 16" max 17'-9" 18'-0" 16'-0" 18'-0" 15'-0" 18'-0" 14'-9" 17'-3" - 17'-0" 9½" 24" max 13'-0" 14'-9" 12'-3" 14'-9" 12'-0" 14'-0" - - - - ½" < d ⅞" 16" max 14'-9" 18'-0" 13'-6" 18'-0" 13'-3" 17'-0" - 16'-6" - 16'-3" 24" max 11'-3" 14'-9" 10'-9" 13'-9" - 13'-3" - - - - d ½" 16" max 20'-3" 18'-9" 20'-3" 17'-6" 20'-3" 16'-9" 20'-0" 16'-6" 19'-6" 11⅞" 24" max 15'-6" 16'-6" 14'-3" 16'-6" 13'-6" 16'-3" - 15'-9" - - ½" < d ⅞" 16" max 17'-9" 20'-3" 16'-0" 20'-3" 15'-0" 20'-0" 14'-9" 19'-0" - 18'-6" TJI 24" max 13'-0" 16'-6" 12'-3" 16'-3" 12'-0" 15'-3" - 15'-0" - - 230 d ½" 16" max 22'-0" 21'-3" 22'-0" 19'-6" 22'-0" 18'-9" 22'-0" 18'-3" 21'-6" 14" 24" max 17'-6" 15'-9" 17'-6" 15'-0" 17'-6" 14'-9" 17'-3" - 17'-0" ½" < d ⅞" 16" max 20'-3" 22'-0" 18'-0" 22'-0" 16'-9" 22'-0" 16'-3" 21'-3" 16'-0" 20'-6" 24" max 14'-9" 17'-6" 13'-6" 17'-6" 13'-3" 17'-0" - 16'-6" - 16'-3" d ½" 16" max 23'-9" 23'-9" 21'-6" 23'-9" 20'-3" 23'-9" 19'-9" 23'-6" 16" 24" max 17'-6" 17'-6" 16'-3" 17'-6" 15'-9" 17'-6" - 17'-6" ½" < d ⅞" 16" max 22'-6" 23'-9" 19'-9" 23'-9" 18'-3" 23'-9" 17'-6" 23'-3" 17'-3" 22'-3" 24" max 16'-3" 17'-6" 14'-9" 17'-6" 14'-3" 17'-6" 14'-0" 17'-6" - 17'-6" tch Distance "x" to tch From End of x 6' 6' < x 7' 7' < x 8' 8' < x 9' 9' < x 10' d ½" 16" max 23'-0" 21'-6" 23'-0" 20'-9" 23'-0" 20'-3" 23'-0" 20'-0" 23'-0" 11⅞" 24" max 17'-3" 17'-9" 16'-6" 17'-9" 16'-6" 17'-9" - - - - ½" < d ⅞" 16" max 19'-3" 23'-0" 18'-6" 23'-0" 18'-0" 23'-0" - 22'-9" - 22'-3" 24" max 14'-9" 17'-9" 14'-6" 17'-9" - 17'-9" - - - - TJI d ½" 16" max 26'-0" 26'-3" 24'-3" 26'-3" 23'-0" 26'-3" 22'-3" 26'-3" 22'-0" 26'-0" 360 14" 24" max 17'-9" 17'-9" 17'-9" - - - - ½" < d ⅞" 16" max 21'-9" 26'-3" 20'-6" 26'-3" 19'-9" 26'-3" 19'-6" 25'-3" - 24'-9" 24" max 16'-6" 17'-9" 16'-0" 17'-9" - 17'-9" - - - - d ½" 16" max 26'-9" 26'-9" 25'-3" 26'-9" 24'-3" 26'-9" 23'-9" 26'-9" 16" 24" max 17'-9" 17'-9" 17'-9" - - - - ½" < d ⅞" 16" max 24'-3" 26'-9" 22'-6" 26'-9" 21'-6" 26'-9" 21'-0" 26'-9" 20'-9" 26'-9" 24" max 17'-9" 17'-3" 17'-9" 17'-0" 17'-9" - - - - For more information see TJI Specifiers Guide TJ-4000 Page 7 of 8
Maximum Allowable tched Top Flange Spans for 40 PSF Live Load / 20 PSF Dead Load Distance "x" to tch From End of tch x 8' 8' < x 9' 9' < x 10' 10' < x 11' 11' < x 12' d ¾" 16" max 26'-3" 26'-3" 25'-6" 26'-3" 25'-3" 26'-3" 25'-0" 26'-3" 11⅞" 24" max 20'-9" 20'-6" 20'-9" 20'-3" 20'-9" - - - - ¾" < d 1⅜" 16" max 23'-0" 26'-3" 22'-3" 26'-3" 22'-0" 26'-3" 22'-0" 26'-3" - 26'-3" 24" max 18'-0" 20'-9" - 20'-9" - 20'-9" - - - - TJI d ¾" 16" max 29'-9" 29'-6" 29'-9" 28'-6" 29'-9" 27'-9" 29'-9" 27'-6" 29'-9" 560 14" 24" max 20'-9" 20'-9" 20'-9" - - - - ¾" < d 1⅜" 16" max 26'-0" 29'-9" 25'-0" 29'-9" 24'-3" 29'-9" 24'-0" 29'-9" 24'-0" 29'-9" 24" max 20'-0" 20'-9" 19'-6" 20'-9" - 20'-9" - - - - d ¾" 16" max 31'-6" 31'-6" 31'-3" 31'-6" 30'-3" 31'-6" 29'-9" 31'-6" 16" 24" max 20'-9" 20'-9" 20'-9" - - - - ¾" < d 1⅜" 16" max 28'-6" 31'-6" 27'-3" 31'-6" 26'-6" 31'-6" 26'-0" 31'-6" 25'-9" 31'-6" 24" max 20'-9" 20'-9" 20'-9" - - - - For more information see TJI Specifiers Guide TJ-4000, Weyerhaeuser, Forte, Javelin, Microllam, Parallam, Silent Floor, TimberStrand, TJI, TJ, Trus, Edge, and Edge Gold are registered trademarks and TJ-Pro is a trademark of Weyerhaeuser NR. 2014 Weyerhaeuser NR Company. All rights reserved. Page 8 of 8