Wood - Compressive Strength vs. Moisture Content

Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength.

Example - Compressive Strength of Moist Spruce

The compressive strenght of spruce is normally in the range 18 - 39 MPa (2610 - 5655 psi). The diagram above indicatees that maximum strengt is reduced to 50% for spruce with 16% moisture. The reduced range can be calculated as

[18 - 39 MPa (2610 - 5655 psi)] * 0.5

= 9 - 19.5 MPa (1305 - 2828 psi)

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Wood - Compressive Strength vs. Moisture Content

Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength.

Example - Compressive Strength of Moist Spruce

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