Wood Design: Asd/lrfd - Structural

Traditional, deterministic method based on elastic design .

"Factored" loads increase the design burden based on the uncertainty of the load type (e.g., higher factors for live loads vs. dead loads). Structural wood design: ASD/LRFD

Standard in steel and concrete design and gradually gaining ground in the wood industry. ⚖️ Key Differences for Designers Load Factors Usually 1.0 (unfactored) Multipliers > 1.0 (e.g., 1.2, 1.6) Material Strength Reduced by Factor of Safety Multiplied by resistance factor ( Calculations Stress-based ( Strength-based ( Efficiency Can be conservative for mixed loads More efficient for transient load combinations 🪵 Why Choose One Over the Other? Traditional, deterministic method based on elastic design