Plank decking Timber Properties

The below table outlines the material properties for Plank decking material including the young's modulus, yield strength, ultimate strength and other relevant mechanical properties required for structural and mechanical design.

Spruce-Pine-Fir

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Commercial

Northern

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Commercial

Hem-fir

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Commercial

Douglas-Fir-Larch

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Plank decking Young's Modulus

The Young's Modulus of Plank decking ranges between 7,000 and 12,500 MPa Young's Modulus represents the material overall strength. See the below tables to get your specific material grade material strength.

Plank decking Compressive Strength

The Compressive Strength of Plank decking ranges between 10 and 19 MPa.

Spruce-Pine-Fir Timber Properties

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Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	16.5 MPa	2 MPa	15 MPa	5 MPa	8.6 MPa	10,500 MPa	7,500 MPa	0	4

Commercial Material Properties

Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	11.8 MPa	2 MPa	12 MPa	5 MPa	5.5 MPa	9,500 MPa	6,500 MPa	0	4

Northern Timber Properties

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Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	10.6 MPa	1 MPa	13 MPa	4 MPa	6.2 MPa	7,500 MPa	5,500 MPa	0	4

Commercial Material Properties

Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	7.6 MPa	1 MPa	10 MPa	4 MPa	4 MPa	7,000 MPa	5,000 MPa	0	4

Hem-fir Timber Properties

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Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	16 MPa	2 MPa	18 MPa	5 MPa	9.7 MPa	12,000 MPa	8,500 MPa	0	5

Commercial Material Properties

Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	11 MPa	2 MPa	15 MPa	5 MPa	6.2 MPa	11,000 MPa	7,500 MPa	0	5

Douglas-Fir-Larch Timber Properties

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Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	16.5 MPa	2 MPa	19 MPa	7 MPa	10.6 MPa	12,500 MPa	8,500 MPa	0	5

Commercial Material Properties

Unit System	Bending Strength, F_b	Shear Strength, F_v	Compressive Strength, f_c	Compressive Strength, f_cp	Tensile Strength, F_t	Young's Modulus, E	Modulus of Elasticity, E_0.05	Specific Gravity, SG	Gamma
Metric	10 MPa	2 MPa	14 MPa	7 MPa	5.8 MPa	11,000 MPa	7,000 MPa	0	5

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