250 Section 2 Foundations and Framing Blocking panel 2 x 4 minimum “squash” blocks 3/4" rim board 1/16" See detail “A6” for additional information. A2 A1 TJI® rim joist Use only for single-story applications or second story of two-story applications. A4 B1 A5 B2 A3 A6 B3 9 1/2" and 11 7/8" TJI® joists only 3/4" rim board See detail “A6” for additional information. Blocking panels used for bracing. 3/4" rim board. Allowed with 9 1/2" and 11 7/8" joist only, unless used with 2 x 4 minimum “squash” blocks as shown in detail “A2.” Must have 1 3/4" minimum joist bearing at ends. See detail “A6” for additional information. 9 1/2" and 11 7/8" TJI® joists only when using double 3/4" rim board *Note: 3/4" rim board end joints must be at TJI® joist locations. 1 1/4" or 1 1/2" TimerStrand™ LSL or 1 3/4" MICRO = LAM® LVL rim boad or double 3/4" rim board. Blocking panels may be required with shear walls above or below. See detail “B1.” Note: Web stiffeners may be required for TJI ®/25 DF and TJI ®/35 DF joists. Intermediate bearing – no load-bearing wall above. Load-bearing or shear wall above (must stack over wall below). Blocking panel Note: Web stiffeners may be required for TJI ®/25 DF and TJI ®/35 DF joists. Note: Web stiffeners may be required for TJI ®/25 DF and TJI ®/35 DF joists. 1/16" Load-bearing wall above (must stack over wall below). 2 x 4 minimum “squash” blocks Blocking panels may be required with shear walls above or below. See detail “B1.” TrusJoist MacMillan Figure 10-30. I-joists are light, strong, and, if correctly installed, provide a rigid, quiet floor. Copyright Goodheart-Willcox Co., Inc.