An Introduction to Dowel Laminated Timber (DLT)

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Video Description
This video serves as an introduction to Dowel Laminated Timber.
If you want to learn more about the world of mass timber, subscribe to this channel!
Stay informed. Stay inspired. TimberTalk.
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Gear
Camera: iPhone 15 Pro Max
Gimbal: DJI Osmo Mobile 6
Lighting: Nanlite PavoTube II 6C
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References
[1] [Tschopp Holzbau - Team](www.tschopp-holzbau.ch/1/Tsch...)
[2] [LinkedIn - Pirmin Jung]( / pirmin-jung-803360a3 )
[3] [Design Buildings - Angled DLT](www.designingbuildings.co.uk/...)
[4] [StructureCraft - Headquarters](structurecraft.com/materials/...)
[5] [Daniel Braunschweiler - DLT Manufacturing]( • Dübelmaschine für Bret... )
[6] [Treehugger - Acoustic DLT Panel](www.treehugger.com/mass-timbe...)
Acknowledgements
This video was made possible by:
- Lars Wijdoogen
- Amsterdam University of Applied Sciences
Music
Music by TVARI - NY Subway and TVARI - Swiss View from Pixabay
Disclaimers
Fair Use
All clips included in this video constitute a 'fair use' of any copyrighted material, which allows for criticism, comment and scholarship.
This video was created for educational/informational purposes.
If you are the creator or own any of the footage featured in this video and have any reservations, please notify me by mail.

[@PrefabulousTimberTalk]

If you enjoyed this video, consider watching our video on the different types of mass timber: kzbin.info/www/bejne/hJvFiqJ9hLydjtU

[@theolwinkledink]

Excellent video

[@PrefabulousTimberTalk]

Thank you very much!

[@StCreed]

Very interesting topic. Thanks.

[@PrefabulousTimberTalk]

Glad you enjoyed it!

[@guyagena8205]

Interesting, I would like to see: 1. Real world applications in detail, with contractors and/or architects explaining and showing the pros and cons, including insulation values, damage resistance, etc. 2. Stress testing to destruction. Thanks.

[@PrefabulousTimberTalk]

Noted. Thank you for the input!

[@catsupchutney]

Yes, one might expect the manufacturing process to be expensive. Real world examples would affirm or refute this.

[@siriosstar4789]

Thomas Haus uses dowels in their CLT panels and apparently have received some complaints about the houses 'creaking' during changes in temperature and humidity . To counter this , Nur Holz in Rombach uses threaded dowels in their panels , eliminating any expansion and contraction .

[@PrefabulousTimberTalk]

Threaded dowels? Never heard of it, but will certainly be taking a look! This probably has some negative impact on the end of life options of the DLT panels, but that might be worth it in some cases 😄

[@siriosstar4789]

Google Rombach Holz Bau , then click on Nur Holz .

[@PrefabulousTimberTalk]

Interesting, so it is still 100% wood! Thank you for sharing this, might be worth a video at some point! Also, it seems like not all of their layers are completely perpendicular, but sometimes 45 degrees?

[@gr8dvd]

Very interesting/informative 👍👍 Suggest appealing to supporters of sustainable construction (ie, investors) in addition to architects & designers. Timber construction has been accused of "green washing"… appearing to source sustainable lumber when it has not. So a deeper dive there would also be welcome.

[@PrefabulousTimberTalk]

That would be an interesting topic to dive into! Thank you for the suggestion. We have a lot of video’s already planned, but this topic will certainly be added to the list :D

[@gr8dvd]

@@PrefabulousTimberTalk Look forward to ‘em. Again well done!

[@DavidOfWhitehills]

Is any glue used?

[@PrefabulousTimberTalk]

For dowel laminated timber, no, there isn’t! Just softwood boards or planks, combined with hardwood dowels that are friction fitted 😄

[@DavidOfWhitehills]

@@PrefabulousTimberTalk Thank you.

[@PrefabulousTimberTalk]

No worries! If you have any other questions, let us know!

[@ronblack7870]

do they drill holes i the planks first ? or they just punch through with hydraulics?

[@PrefabulousTimberTalk]

The holes are normally pre drilled, whereafter the dried dowels get inserted These dowels then take up moisture from the surrounding panel and swell, tightening the fit In the example shown, they were pushed through with hydraulics They were probably pushed through just the last layer and this layer was probably made of very soft wood Hope this answers your question!

[@godbluffvdgg]

None of that here on the east coast US.

[@PrefabulousTimberTalk]

You mean that there aren’t a lot of mass timber buildings there?

[@drumswest5035]

Lots of mass timber buildings on the west coast of canada

[@PrefabulousTimberTalk]

Hi Drumswest, As a reaction to your other comment: I'm sorry to hear you view mass timber products that way. Regarding the efficiency of CLT and DLT panels, it's true that they use more wood than traditional timber framing. However, they provide superior strength-to-weight ratios and can make use of smaller, sustainably sourced trees. Your concerns about connection challenges are valid, though recent advancements have significantly improved this aspect. You’re correct, StructureCraft is based in Canada, with locations in the US and Italy. We did mention that StructureCraft's DLT manufacturing facility is located in North America. In a few weeks time, we'll be releasing a video about the benefits of building with mass timber. After that, we'll follow up with another video addressing the challenges and limitations of this construction material. We value your insights and would love to hear about your experiences and suggestions for improvement. There's a chance we might have overlooked something important for our upcoming video on the challenges and limitations of mass timber construction, so any new information you can provide would be greatly appreciated!

[@godbluffvdgg]

@@PrefabulousTimberTalk Yes, I do mean that...I'm a general contractor, I had never heard of it until I saw your video....:)...We're kind of stodgy and stuck in our ways here in the philly area...Cheers!

[@PrefabulousTimberTalk]

We all learn something new everyday! I believe Timberlab is one of the biggest manufacturers of mass timber on the East Coast. Could be interesting to look up if you liked the video! :D