FAQs / How does the stiffness rating of glulam relate to machine stress gradings-MSG?

The gradings of glulam and solid timber beams are directly comparable. For example GL8 graded glulam has “equivalent or better” structural performance than MSG8 timber.

The average stiffness of both grades is 8 GPa, while the strength (bending, compression etc) values are higher for glulam.

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