[GSBN] data loggers

Jim Carfrae jim.carfrae at plymouth.ac.uk
Mon Dec 8 10:23:48 CST 2014


Hi Martin
I am hoping to publish the research, which means that I'm afraid that can't share any details until after publication.

There was nothing too surprising in the research, apart from one section of wall that got drenched by rain before rendering. The client decided not to replace the bales, and I recorded moisture content of over 36% in a couple of the bales (the limit of the probe).
The rendering went ahead soon after that and I continued to monitor the wall. I was surprised that the elevated moisture stayed for over 6 months, but has dried back now. Despite being at levels well over the accepted maximum for such a long time, the straw shows no signs of degradation. This accords with other buildings that I've investigated – generally the lime render seems to retard mould growth, and this combined with the lack of oxygen is what saves the straw (I think!)

Regards

Jim

Dr Jim Carfrae
Environmental Building Group
Room 302 Roland Levinsky Building
School of Architecture, Design and the Environment
Plymouth University
Drake Circus PL4 8AA
UK
07880551922


From: martin hammer <mfhammer at pacbell.net<mailto:mfhammer at pacbell.net>>
Reply-To: Global Straw Building Network <GSBN at sustainablesources.com<mailto:GSBN at sustainablesources.com>>
Date: Monday, 8 December 2014 15:48
To: GSBN <GSBN at SustainableSources.com<mailto:GSBN at SustainableSources.com>>
Subject: Re: [GSBN] data loggers

Hi Jim,

Are you able to share that data/research with the group? Or is that
premature.

Martin


On 12/8/14 6:18 AM, "Jim Carfrae" <jim.carfrae at plymouth.ac.uk<mailto:jim.carfrae at plymouth.ac.uk>> wrote:

Hi Enga
I have been doing similar research, but using probes rather than data loggers.
I have recently completed a years monitoring of the construction phase of a
new straw bale building in the UK, from measuring the bales in the field,
through to completion and first six months occupation.
It might be interesting to compare data when your research is complete ­ Where
is your building?
Regards
Jim
Dr Jim Carfrae
Environmental Building Group
Room 302 Roland Levinsky Building
School of Architecture, Design and the Environment
Plymouth University
Drake Circus PL4 8AA
UK
07880551922
From: Enga Lokey <enga at thelokeys.net<mailto:enga at thelokeys.net><mailto:enga at thelokeys.net>>
Reply-To: Global Straw Building Network
<GSBN at sustainablesources.com<mailto:GSBN at sustainablesources.com><mailto:GSBN at sustainablesources.com>>
Date: Monday, 8 December 2014 12:49
To: Global Straw Building Network
<GSBN at sustainablesources.com<mailto:GSBN at sustainablesources.com><mailto:GSBN at sustainablesources.com>>
Subject: [GSBN] data loggers
Hello All,
Wanted to check in with any of you that have experience with data loggers in
ongoing monitoring of temperature and humidity. Ideally, I will be imbedding
dataloggers/sensors in the walls of a strawbale structure as it is built and
then be able to monitor temperature and moisture movement within the wall from
the plastering process through several years of use. If anyone is familiar
with specific brands or types of equipment that either works particularly well
or should be avoided, I would appreciate hearing about it. Economy will
unfortunately be a factor as funding for these monitors seems to be getting
more limited each day.
Thanks for any and all input.
Enga
enga at thelokeys.net<mailto:enga at thelokeys.net><mailto:enga at thelokeys.net>
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