Engineered I-Joists

I-Joists Supplied Through Our Lumberyards

Dynamic Lumber Solutions supplies engineered I-joists as part of complete structural material packages and stocked inventory through our lumberyard operations. Builders and designers rely on I-joists for long spans, flat assemblies, and predictable performance in modern construction.

What Are I-Joists?

I-joists are engineered structural members manufactured with solid-sawn or laminated flanges and a structural OSB web. This design delivers high strength, excellent stiffness, and consistent dimensional stability compared to traditional sawn lumber.

Common Applications

• Primary floor framing systems
• Second-story and multi-level structures
• Long-span assemblies with fewer bearing points
• Flat, level floors with minimal deflection
• Engineered roof and ceiling systems where specified

Brand Equivalents & Compatibility

Structural plans often reference specific manufacturer series. The engineered I-joists supplied through our lumberyards are compatible with major industry brands when matched by depth, series rating, and engineering requirements.

• RFPI-20 ≡ BCI-5000 ≡ TJI-110
• RFPI-40 ≡ BCI-6500 ≡ TJI-230
• RFPI-70 ≡ BCI-6160 ≡ TJI-360
• RFPI-90 ≡ BCI-5090 ≡ TJI-560
• RFPI-400 ≡ BCI-6000 ≡ TJI-210

We help verify equivalency so material selections align with the engineer’s intent and project requirements.

Structural Performance & Design Considerations

Engineered I-joists are designed to meet published manufacturer span tables and performance criteria. Selection should always follow current engineering documents, load calculations, and applicable building codes.

I-Joists & Coordinated Engineered Systems

I-joists are commonly used in coordination with engineered rim board, LVLs, and structural panels to create efficient, integrated framing systems. This approach simplifies layout, improves consistency, and supports modern construction practices.