GL13
Glue-laminated timber stress grade with characteristic bending strength of about 33 MPa and modulus of elasticity of approximately 13 GPa, used in residential beams and posts.
Glulam stress grade under AS/NZS 1328.1, in which laminations are bonded with structural adhesive to produce a beam stronger and stiffer than the parent timber. GL13 has a characteristic bending strength near 33 MPa and a mean modulus of elasticity of approximately 13 GPa. Common applications include residential and light-commercial portal frames, lintels, ridge beams, and exposed feature beams. GL13 is generally manufactured from softwood laminations and is the entry tier of glulam. Design properties are tabulated in AS 1720.1. For buyers, glulam can be supplied in long lengths and curved profiles unattainable in solid timber. Specify finish (industrial vs architectural) and check moisture content suits the end environment.
Values and references on this page are indicative and drawn from common industry sources. Always verify the current AS/NZS standard, manufacturer data sheet or NIAA policy publication before relying on figures for design, specification or compliance work.
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