Post & Beam vs. Post & Plate: Which is Best for Mass Timber?
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- čas přidán 30. 07. 2024
- Mass timber panels including cross laminated timber (CLT) have the ability to span in 2-directions, using structural properties obtained in both the major and minor panel axes. Doing so can result in a beamless system often referred to as Post and Plate (a framing configuration also used in flat plate concrete construction). Vertical columns support the floor and roof panels at discrete locations. On the other hand, mass timber horizontal panels can span one direction, supported on a series of beams and then columns. So which system is the best for mass timber? Check out this video for comparisons of each, and some project types where each of these systems could work well.
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Ricky McLain is a structural engineer and mass timber specialist at WoodWorks. This video and this channel are based purely on Ricky's own observations, experiences and opinions and do not necessarily reflect the opinion nor beliefs of WoodWorks.
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#masstimber #structuralengineering #architecture
Currently working on a 2-story Public Library for studio, very helpful videos!
Awesome, hope the design goes great!
Great info thank you looking to do a building with bamboo beam !
Thank you! Quick but very complete and detailed explanation of both systems. I just discovered mass timber construction and this was very helpful for me to understand it. Regards from Argentina.
Cheers, thanks for watching!
Dear Archt Ricky, thanks for accepting my contact. Regarding the issue of lowering CO2 emissions, using more wood in construction, I am concerned because we are only seeing the problem in the world of Architecture, but what happens in the other scenarios? I am referring to the polluting giant of the Marine world, or in the same way to the automotive world, among others. Ships were always made of wood for thousands of years, and just a little over 100 years ago, all are generally made of steel. Millions of tons of CO2 from steel mills are emitted each year to be able to comply with the requirements of the Navy. I feel like we should look that way too, not just the buildings. The opportunities to develop new micro-laminated wood structures for the marine sector are enormous. I am conducting research on new micro-laminated wood structures to be able to make large wooden boats. If you like this topic, it would be a pleasure for me to talk more about that. Regards
Thanks! Appreciate the concise explanations.
Thank you for watching and commenting! Glad it was useful.
Thank you theses videos are very helpful. Just subbed.
Thank you for watching, I am glad you are getting use out of them!
Very good Ricky.
Appreciate that Russ!
Thank you for discussing this usually underrated topic. I'd like to see more post & beam framing in single-family residential builds in North America. Can you make a video discussing engineered wood products, e.g., Glulam, LVL, in post & beam application?
Thanks for watching Leo. Good idea, I'll see how to work this topic into a future video.
@@MassTimberHowTos agree with more SFH content esp wrt choosing between N/D/CLT and also talking about sound transmission
Hi great video, I'm planning to desing a concrete frame with a mass panel one direction as slab. But i have my doubts it i'll work as rigid diaprhagm
Just discovered you, while doing some research into mass and engineered timber products. I've subscribed!
Appreciate you @mrkeithplowman!
Great topic! Great content! Great work! Amazing channel!
Thanks! Appreciate you getting some use out of it!
@@rickymclain I really like the concept that you guys are going towards.
so informative!!
Thanks so much!
Thanks
Thank you!
Little bit late to the party but what about combining the two concepts? Would it be possible to integrate a one-way spanning CLT panel between the glulam beams? Cant seem to find any references but dont know why, it seems to combine both the benefits of having a small construction height together with a large span. I can imagine using notched CLT for partially integrated floors or using a lot of screws or steel plates to suspend the CLT slab between the glulam beams.
Great content !! Currently studying civil engineering and my goal is to be involved in wood structure project after school.
Keep going !
From Quebec, Canada
Thanks! Your future is bright - best wishes with your studies! Cheers.
Regarding the issue of lowering CO2 emissions, using more wood in construction, I am concerned because we are only seeing the problem in the world of Architecture, but what happens in the other scenarios?
I am referring to the polluting giant of the Marine world, or in the same way to the automotive world, among others.
Ships were always made of wood for thousands of years, and just a little over 100 years ago, all are generally made of steel. Millions of tons of CO2 from steel mills are emitted each year to be able to comply with the requirements of the Navy.
I feel like we should look that way too, not just the buildings.
The opportunities to develop new micro-laminated wood structures for the marine sector are enormous.
I am conducting research on new micro-laminated wood structures to be able to make large wooden boats.
If you like this topic, it would be a pleasure for me to talk more about that.
Regards
What are typical sizes of post and beam adopted in multistorey residential mass timber buildings? Thank you for the content
The beam sizes will vary with spans and loading, and the column sizes will vary with number of stories supported, as well as loading and height. We provide some discussion on member sizing and grid options in this article: www.woodworks.org/resources/creating-efficient-structural-grids-in-mass-timber-buildings/
Tilt up concrete warehouse with glu lam columns + wood trusses. 32’ clear height in warehouse. Possible?
Yes, possible and variations of that have been done. Some industrial projects are now exploring an all timber solution including for the 'tilt up walls' while others are using mass timber walls with steel roofs. Really a low of flexibility in what can be done. A couple of examples here: www.woodworks.org/resources/why-consider-a-panelized-wood-roof-systems-for-commercial-buildings/
www.woodworksinnovationnetwork.org/projects/southfield-park-35-warehouse
www.woodworksinnovationnetwork.org/projects/1391-horizon
Are you familiar with the Deltabeam? If you are would this be considered plate construction? The company who manufactures the deltabeam is peikko.
Yes, for sure familiar with it. I would consider that to fall loosely within the post and beam option. The beams are flush with the CLT so they don't extend below like they would in the glulam or steel beam option.
Would building with 4x4's be considered heavy timber?
No, IBC Chapter 23 lists the minimum sizes for heavy timber construction and both beams and columns are required to be larger than 4x4. Thanks for watching!
Can you refer a simple (101 fundamental of single story residential) PDF?
The Wood Frame Construction Manual from the AWC may help for your question: awc.org/codes-standards/publications/wfcm-2018
Hello Rick
I was wondering if you do some consulting, because I want to build a mass timber project. Please let me know . Henry
Henry, thanks for your note and interest. I'd be happy to direct you to an experienced engineer or architect, depending on what you are looking for. Feel free to send me an email at ricky.mclain@woodworks.org
Thanks
Thanks for watching and sharing!