FAQs / What strength grades should glulam be designed to?

The new glulam code AS/NZS 1328 allocated Glulam beams manufacturers in New Zealand radiata pine to three grades – GL8, GL10 and GL12. These figures refer to the stiffness (E) of the beam.

The most common is GL8; some manufacturers are certified to produce GL10 or GL12. Check with your supplier.

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