The Red Stag TimberLab Glulam Span Tables were developed primarily for domestic applications in accordance with NZS3603 “Timber Structures Standard” and with the joint AS/NZS 1328.1: standard “Glue Laminated Structural Timbers”.



Interactive tables allow the user to enter loading, span & spacing.

Once the “CALCULATE” button is activated, a selection of beam sizes will be displayed.


The purpose of these tables is to make it easier for builders, draughtspersons, architects and engineers to come up with a quick and accurate design for Glulam beams. These cover the most common domestic uses for Glulam beams – roof beams, rafters, ridges, lintels and floor beams. At a glance designers and builders will be able to find the correct size of beams for a variety of spans at various spacings and loadings

By entering in the appropriate loads from a drop-down list and entering the span and spacing of selected members, the Design Software will show a selection of beam sizes to choose from. A certificate for Council approval is available on completion of your calculation. Please do not hesitate to contact us if you need any assistance.