Timber property assumptions

The engineer shall verify that the properties of the selected grades are those that are characteristic of the material, are obtained from up-to-date manufacturer’s data and are applicable to the analysis model. Analysis Modification Factors must also be confirmed to be correct.

Head Code Eurocode

The following assumptions have been made:

Loading will be perpendicular to the wide faces of the laminations (bending about the major axis).
Moisture content of the sections will be less than 15% - analysis modification factors may need to be applied if this is not the case.
The glulam grade being used complies with the characteristic properties outlined in BS EN 14080:2013.
The engineer has verified that the E_analysis value of the member is suitable for the particular application.
The section and strength class are compatible.

Head Code ACI/AISC

The following assumptions have been made:

The moisture content of the structural composite lumber or glulam section is less than 16% and the temperature remains below 100°F - analysis modification factors may need to be applied if this is not the case.
The glulam section will be loaded perpendicular to the wide faces of the laminations (bending about the x-x axis).
The glulam grade being used complies with the characteristic properties outlined in AWC NDS supplement 2018.
The engineer has verified that the E_analysis value of the member is suitable for the particular application.
The section and strength class are compatible.