Thanks for that Richard. Looks from the cat 1 sample like I'll get a decent amount of attenuation with 22 or 30cm thickness, even though it won't have any carbonised layers (I've confirmed).
I'd seen the manufacturers info on carbonised wood layers previously but it didn't give any indication as to what attenuation was like on CLT without carbonised layers on it. Regards, Jen. From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> On Behalf Of Letts, Richard J Sent: 02 April 2020 21:31 To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] Any experience of losses through CLT (Cross Laminated Timber) Floors? Take a look at this article: https://ieeexplore.ieee.org/document/8740123 W. Conniott, J. Vieira, S. Monteiro and R. F. S. Caldeirinha, "Low Cost Radio Shielding Effectiveness using Carbonised Wood," 2019 13th European Conference on Antennas and Propagation (EuCAP), Krakow, Poland, 2019, pp. 1-4. It has a number of good graphs of attenuation and a table for attenuation of signals at 2.4Ghz and 5Ghz wifi The closest example that have is two 9cm CLT with a 10cm gap between them (~=180mm) -- the SE was 16.05dB (2.4Ghz wifi) and 22.63dB (5GHz Wifi) The composition of the floor tiles might be significant, e.g. if they're anti-static as that might look more like the carbonized wood example. Richard Letts From: The EDUCAUSE Wireless Issues Community Group Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> On Behalf Of Jennifer Francis Wilson Sent: Thursday, April 2, 2020 5:22 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: [WIRELESS-LAN] Any experience of losses through CLT (Cross Laminated Timber) Floors? We have a new building currently going up that uses CLT (Cross Laminated Timber) for its floors. It will just be 220mm or 300mm CLT and raised floor tiles, no concrete or any other layers. Anyone of experience of wifi attenuation/losses through these materials? Regards, Jen. Jennifer Wilson Senior IT Networks Analyst University of Central Lancashire [Image removed by sender. University of Central Lancashire] Please consider the environment before printing ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community ********** Replies to EDUCAUSE Community Group emails are sent to the entire community list. If you want to reply only to the person who sent the message, copy and paste their email address and forward the email reply. Additional participation and subscription information can be found at https://www.educause.edu/community
