Hello All - Can anybody suggest alternatives to lightweight concrete topping slabs for mass timber/CLT resilient floors? I will specify a raised floor system where possible for this large mixed-use technology campus, but raised floors are not going to work for the labs and fabrication labs. Has a…

hey @aaron.vaden-youmans - great question. Always a number of considerations for topping like structural diaphragm loads and vibration as well as acoustic requirements. Here’s Woodworks resource of various assemblies rated for acoustic performance. It includes options without concrete entirely. Mig…

@aaron.vaden-youmans @Luke-Lombardi reviving this topic a bit, I’ve had a number of questions recently about what GWP to assume for lightweight topping slabs like gypcrete, but I have had little luck finding anything representative of that product. Has anyone heard of any products like this that ha…

Hi Aaron, for lab and fabrication spaces on mass timber/CLT, try dry screeds (gypsum or cement boards) or thin UHPC precast panels for a low-carbon, demountable alternative to concrete toppings. Lightweight floating floors with plywood or resilient strips can also meet acoustic needs. Let me know if…

Try USG Levelrock® Brand Floor Underlayment found here: PCRs & EPDs - Environmental Product Declarations - Certification - Products & Services | ASTM Here’s an example: USG Levelrock® Brand 3500 Series Floor Underlayment For dry systems, see GenieBoard® | EPD Insulation Group Pliteq also has EPD…

Thank you! Do you have any case studies for that floor assembly, the thin UHPC precast panels? Onward, aaron Aaron Vaden-Youmans Sustainability Lead (North America) T +1 323 471 6700 M + 1 917 246 2295 A 432 Colyton Street, Los Angeles, CA 90013, USA [image] [image] Grimshaw is…

Case studies for the GenieBoard? I do not at the moment. I would contact Aedan for that: Aedan Callaghan, BEng. Managing Director - Mass Timber and Technical Services Pliteq Vancouver, BC T 206-673-2933 C 778-840-6878 E acallaghan@pliteq.com

@aaron.vaden-youmans , DCI has worked on a case study for a dry topped mass timber assembly versus gypcrete in a residential application that we presented at the mass timber conference earlier this year. Reach out to @arizona.dabrusin at adabrusin@dci-engineers.com for more information!

Mass Timber / CLT Resilient Floor Alternative to Concrete Topping Slabs

Materials

MontyCW (Monty Chong-Walden) April 4, 2022, 6:01am 2

Would love to be able to help you here Aaron, but we are not at that stage yet. Hopefully in the future we would be the exact solution you were looking for.

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Mass Timber / CLT Resilient Floor Alternative to Concrete Topping Slabs

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