Timber · Glued laminated timber, combined · orthotropic

GL26c

Name: GL26c — material properties (EN 14080:2013)
Creator: BadgerMecX

EN 14080:2013 · strength class

GL26c is a combined glued laminated timber class to EN 14080:2013. Its characteristic bending strength is 26 MPa. Along the fibres E₁ = 12 GPa; across them E₂ = 0.3 GPa.

Record: glulam-gl26c
Library: v1.1.0
Properties: 14
Sources: 1
Build check: passed ✓
Viewing as: guest

E₁ · Modulus, direction 1 12GPa mean^[1]

f_m,k · Bending strength 26MPa char^[1]

f_t,0,k · Tension parallel to grain 19MPa char^[1]

ρ · Density 420kg/m³ mean^[1]

Elastic constants

orthotropic

Symbol	Property	Value	Unit	Basis	Ref.
E₁	Modulus, direction 1 ⓘ E_0,g,mean	12	GPa	mean	[1]
E₀,₀₅	Modulus parallel to grain, 5 % fractile	10	GPa	char	[1]
E₂	Modulus, direction 2 ⓘ E_90,g,mean	0.3	GPa	mean	[1]
E₃	Modulus, direction 3 ⓘ E_90,g,mean	0.3	GPa	mean	[1]
G₁₂	Shear modulus 1-2 ⓘ G_g,mean	0.65	GPa	mean	[1]
G₁₃	Shear modulus 1-3 ⓘ G_g,mean	0.65	GPa	mean	[1]
G₀₅	Shear modulus, 5 % fractile	0.54	GPa	char	[1]

Physical, thermal and electrical

at 20 °C

Symbol	Property	Value	Unit	Basis	Ref.
ρ	Density	420	kg/m³	mean	[1]
ρ_k	Density, characteristic (5 % fractile)	385	kg/m³	char	[1]

Strength

a band applies up to and including its upper limit

Symbol	Property	Value	Unit	Basis	Ref.
f_m,k	Bending strength	26	MPa	char	[1]
f_t,0,k	Tension parallel to grain	19	MPa	char	[1]
f_t,90,k	Tension perpendicular to grain	0.5	MPa	char	[1]
f_c,90,k	Compression perpendicular to grain	2.5	MPa	char	[1]
f_v,k	Shear strength	3.5	MPa	char	[1]

Notes

EN 338 and EN 14080 give no Poisson's ratios; a 3D analysis needs them from another source.
f_c,0,g,k is left out: the copies checked do not agree on it for this class.

Sources

every value names one

EN 14080:2013, Timber structures — Glued laminated timber, Tables 4 and 5Copies checked: 1, 2, 3, 4

min product standard minimum char characteristic design code value for design typical datasheet or textbook derived worked out here, formula shown

Cite this page

for reports and papers

BadgerMecX Materials (2026). GL26c — material properties, EN 14080:2013. Library v1.1.0, record glulam-gl26c. https://badgermecx.com/materials/glulam-gl26c/ (accessed 2026-10-08).

@misc{badgermecx_glulamgl26c,
  title  = {GL26c -- material properties, EN 14080:2013},
  author = {{BadgerMecX Materials}},
  year   = {2026},
  note   = {Library v1.1.0, record glulam-gl26c},
  url    = {https://badgermecx.com/materials/glulam-gl26c/}
}

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