By what percentage does the load capacity of fire treated wood decrease its allowed load?

The load capacity of fire treated wood is a crucial consideration in fire safety and construction standards. When wood is treated for fire resistance, chemical compounds are introduced to enhance its ability to withstand heat and flames. However, this treatment often results in a reduction of the wood's structural capabilities.

In general practice, fire-treated wood is estimated to have its allowable load capacity decreased by approximately 25%. This percentage reflects the balance between enhancing fire resistance and maintaining structural integrity. The decrease in load capacity is an important factor for designers and builders to consider when planning structures that might use treated wood, ensuring that safety controls are in place to account for this reduction.

Understanding this percentage helps professionals gauge how fire treatment influences material performance, ensuring safe construction practices that prioritize both fire safety and structural soundness.