A proprietary manufacturing process produces properties that allow designs with excellent seismic and wind-resistance performance. Our proven edge- and end-coating process for moisture resistance virtually ensures dimensional stability and job site durability.
| Sizes and Weights |
| Depth |
9-1/2" |
11-7/8" |
14" |
16" |
| Weight (PLF) |
3.0 |
3.7 |
4.4 |
5.0 |
| Thickness |
1-1/8" |
| Length |
12' |
Loads
- Vertical Load - Rim doublerstarter joist, or starter joist with blocking, supports 24" o.c., 4,850 PLF
- Horizontal Load - Lateral seismic or wind load, 200 PLF using a load duration factor of 160%. With 1/2" lag or through bolt attaching ledger to rim board, 350 lbs. lateral load per bolt
- Lateral load for nails in wide face of rim board - Design per 1997 NDS using Douglas Fir-Larch values
Connection Requirements
- Connecting to joist - Face-nail rim board to each joist with two (2) 8d nails, one into top and bottom flange.
- Connecting to plate - Toe-nail rim board to wall plate with 8d nails at 6" o.c. or 16d nails at 12" o.c.
- Connecting to subfloor - Attach floor sheathing to rim board per building code or structural panel manufacturer's specifications (closest on-center nail spacing is 6"). For lateral seismic or wind shear transfer of up to 200 PLF, use 8d nails at 6" o.c.
- Connecting to other rim boards - Face-nail rim boards together at corners with three (3) 8d nails.
- Attaching ledgers - To attach a ledger, use 1/2" through bolts with nuts and washers or 1/2" lag screws (minimum length of 4") with washers. Maintain 2" edge distances on ledger and rim board. When using lag screws, drill 5/16" lead holes in rim board and 1/2" holes in ledger. Caulk holes with high quality caulking immediately before inserting the bolts or lag screws. Caution: The lag screw should be inserted in a lead hole by turning with a wrench, not by driving with a hammer. Do not over-torque lag screws. Over-torquing can significantly reduce the lateral resistance of the lag screw.
For installation and technical information, refer to the FiberStrong® Rim Board sections of Residential Floor and Roof Systems Product Guide (PDF: 2MB/56pgs).
FiberStrong Rim Board has been tested and approved as a rim board and starter joist by APA-EWS. FiberStrong Rim Board is not recommended as a structural joist, rafter, header or ledger. For such applications, consider Wood I Beam™ joists or GP Lam® LVL.
