27 Heavy Timber Sizing

Use of these diagrams to determine the length and width of your beams given the particular spans are using in your design project.

DECKING
for spans between beams
https://openlab.citytech.cuny.edu/bt2-2020f/files/2020/05/CLT.pdf

SOLID TIMBER BEAMS
For spans less than or equal to 16′
https://openlab.citytech.cuny.edu/bt2-2020f/files/2019/05/Woob-Beams-SOLID.pdf

BUILD-UP TIMBER BEAMS
For spans less than or equal to 34′ and greater than 16′
https://openlab.citytech.cuny.edu/bt2-2020f/files/2019/05/Woob-Beams-BUILD-UP.pdf

GLUE LAMINATED BEAMS
For spans greater than 34′ with the maximum span of 100′
https://openlab.citytech.cuny.edu/bt2-2020f/files/2019/05/Woob-Beams-GLUE-LAMINATED.pdf


METRIC VERSION:

DECKING
for spans between beams
Divide the span by 30 to get the wood CLT depth

SOLID TIMBER BEAMS
For spans less than or equal to 3700mm
https://openlab.citytech.cuny.edu/bt2-2020f/files/2020/07/Woob-Beams-metric-SOLID-TIMBER.pdf

BUILD-UP TIMBER BEAMS
For spans less than or equal to 9100mm and greater than 3700mm
https://openlab.citytech.cuny.edu/bt2-2020f/files/2020/07/Woob-Beams-metric-BUILD-UP-TIMBER.pdf

GLUE LAMINATED BEAMS
For spans greater than 9.1m with the maximum span of 30m
https://openlab.citytech.cuny.edu/bt2-2020f/files/2020/07/Woob-Beams-metric-GLUE-LAMINATED.pdf