[Equest-users] Floor Slab F-factor

[Bruce Easterbrook]

Try this site. 
http://canmetenergy-canmetenergie.nrcan-rncan.gc.ca/eng/software_tools.html
The 2 programs I would suggest are the Hot2000 and Base calc.  Hot2000 
is residential but has a fairly detailed section on basements and slab 
on grade.  It is a DOE 1 or 2 engine, and does convert your input into 
an F factor for analysis.  There are building size limits but you should 
be able to work around that by scaling.  I have never used Base calc, 
but it is foundation specific, it might be just what you are looking for.
EE4 was what I was using before I found eQuest, another DOE engine 
without the nice eQuest front end.  This group is the one working on the 
metric version of eQuest.  There are other good programs here for 
daylighting, skylights and ground source well fields.
Bruce Easterbrook P.Eng.
Abode Engineering.


On 09/09/2010 02:15 PM, Jeremy Poling wrote:
>
> The inter-office debate is more on advising our architect on options 
> for slab insulation using the energy benefits of one option compared 
> to another.  The project having the debate is a large area low-height 
> building with some spaces similar to a warehouse, so from an envelope 
> perspective the critical envelope gain/loss surfaces are the Roof and 
> the Slab.
>
> We arrived at this question for eQuest since the other model used in 
> house is Trace and Trace uses F-Factor directly for slab-on-grade.  
> For eQuest, since the guidance on converting F-Factor to U-Factor for 
> use in eQuest was written in 1998 and was based on DOE2.1E, does 
> eQuest 3.64 still use the same methodology?  The question also goes 
> back to a comment much earlier in the archives on this being an area 
> of eQuest that should be added in a future revision of eQuest.
>
> Thanks for the help!
>
> *JEREMY R. POLING, PE, LEED AP*
> Associate Vice President,
>
> Senior Sustainability Analyst
> Strategic Services
> /Site Solutions | Operations | Sustainability/
>
> *EPSTEIN*
>
> */Epstein is a firm believer in sustainability. We ask that you please 
> consider the environment before printing this e-mail./*
>
> *From:* Jonathan Smith [mailto:jsmith at csarchpc.com]
> *Sent:* Thursday, September 09, 2010 7:39 AM
> *To:* Jeremy Poling; equest-users at lists.onebuilding.org
> *Subject:* RE: [Equest-users] Floor Slab F-factor
>
> Jeremy,
>
> What's the point of contention you're debating?
>
> I would begin with creating a eQuest wizard model simulation that is 
> representative of the slab-on-grade example(s) given in the article.
>
> Jonathan
>
> *From:* Jeremy Poling [mailto:jpoling at epsteinglobal.com]
> *Sent:* Wednesday, September 08, 2010 6:58 PM
> *To:* Jonathan Smith; equest-users at lists.onebuilding.org
> *Subject:* RE: [Equest-users] Floor Slab F-factor
>
> I'm a little tardy joining this thread, but the original write-up was 
> from the Spring 1998 edition of the "Building Energy Simulation" 
> newsletter.  I am hoping someone can confirm that this is still the 
> correct method for the latest versions of eQuest and DOE2.2 to solve 
> an inter-office debate.  Thanks!
>
> *JEREMY R. POLING, PE, LEED AP*
> Associate Vice President,
>
> Senior Sustainability Analyst
> Strategic Services
> /Site Solutions | Operations | Sustainability/
>
> *EPSTEIN*
>
> */Epstein is a firm believer in sustainability. We ask that you please 
> consider the environment before printing this e-mail./*
>
> *From:* equest-users-bounces at lists.onebuilding.org 
> [mailto:equest-users-bounces at lists.onebuilding.org] *On Behalf Of 
> *Jonathan Smith
> *Sent:* Tuesday, June 08, 2010 10:19 AM
> *To:* equest-users at lists.onebuilding.org
> *Subject:* [Equest-users] Floor Slab F-factor
>
> All:
>
> The document regarding eQuest perimeter slab heat calculations is 
> appended to the eQuest Training Workbook. See the link below.
>
> "Underground Surfaces" by Fred Winkelmann (LBNL)
>
> http://doe2.com/download/equest/eQuestTrainingWorkbook.pdf
>
> *Jonathan R. Smith AIA LEED*®*AP*
>
> signature-logo_60%
>
> 40 Beaver Street
> Albany, New York 12207
> p: 518.463.8068 x268
> f: 518.463.8069
> www.csarchpc.com <http://www.csarchpc.com/>
>
>
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