Application Detail for BCI Rim Joists (US)
Per ICC-ES® evaluation report ESR-1336, BCI® joists may be installed as rim joists, both perpendicular and parallel-to-the-floor framing as shown.
BCI® Rim Perpendicular BCI® Blocking Perpendicular BCI® Rim Parallel
Vertical load capacities for BCI® rim joists are shown below (per Table 4 of ICC-ES® ESR-1336). BCI® rim joist design values are the same for both perpendicular and parallel-to-framing orientations.
| BCI® Rim Joists | ||
| Joist Depth [in] | BCI® Series | Vertical Load [lb/ft] |
| 9 ½” | 4500s, 5000, 5000s, 6000, 6000s, 6500, 6500s | 2300 |
| 11 7/8” | 4500s, 5000, 5000s, 6000, 6000s, 6500, 6500s | 2150 |
| 60, 60s, 90, 90s | 2500 | |
| 14” | 4500s, 5000, 5000s, 6000, 6000s, 6500, 6500s | 2000 |
| 60, 60s, 90, 90s | 2400 | |
| 16” | 4500s, 5000, 6000, 6000s, 6500, 6500s | 1900 |
| 60, 60s, 90, 90s | 2300 | |
| 18” & 20” | 90, 90s | 2700(1) |
(1) Web stiffeners required every 24 inches along rim joist length.
When designing the rim joist to transfer lateral loads (from floor diaphragms, shear walls), nailing values are equivalent to Douglas-fir sawn lumber. The closest allowable nail spacing limits for vertical nailing through the flanges are shown below (per Table 6 of ICC-ES® ESR-1336):
| Nail Size | O.C. Spacing [in] | End of Joist [in] |
| 8d box & common, 10d & 16d box | 2” | 1.5” |
| 10d & 16d common, 16d sinker | 3” | 2” |
Please note that specifically for floor diaphragms, the closest permitted nail spacing for 6d, 8d and 10d common nails is 2.5” for BCI® 60 / 60s and 90 / 90s joists, 4” for all other BCI® series. See Table 7 of ICC-ES® ESR-1336 for further information regarding floor diaphragms.
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