[bldg-sim] Slab on grade f-factor

["L. Calvin van Belle" <lvanbelle@xxxxxxxxxxxxxxxxxxx>]

I am working on an energy code compliance form.  The scope of the project is
some office space being built into an existing warehouse.  The city is
requiring that these offices meet the current energy code.  Which is all
fine, however the existing slab is uninsulated.  Obviously, we can meet a
prescriptive approach.  However, using an overall component method we just
get hammered by the uninsulated slab.  Basically, we need to insulate
everything else as much as possible.  So, any credit in the F-Factor for an
8" slab vs. a 6" slab would be extremely beneficial.  Anyone else deal with
similar requirements/situation?  Would it be possible to insulate an
existing slab?

___________________________________________
L. Calvin van Belle     Phone: 206-241-2012
Mechanical Engineer     Fax:   206-241-3101
       lvanbelle@xxxxxxxxxxxxxxxxxxx
                  T. E. I.

-----Original Message-----
From: postman@xxxxxxxx [mailto:postman@xxxxxxxx]On Behalf Of Jeff Haberl
Sent: Sunday, September 14, 2003 4:46 PM
To: bldg-sim@xxxxxxxx
Subject: [bldg-sim] Slab on grade f-factor


What are you planning on using these numbers for?

Jeff


8=!   8=)  :=)   8=)   ;=)   8=)   8=(   8=)   8=()   8=)   8=|   8=)   :=')
8=)   8=)   8=?

Jeff S. Haberl, Ph.D., P.E.............................jhaberl@xxxxxxxxxxxx
Professor...............................................Office Ph:
979-845-6507
Department of Architecture...........................Lab Ph: 979-845-6065
Energy Systems Laboratory...........................FAX: 979-862-2457
Texas A&M University..................................77843-3581
College Station, Texas, USA...........................URL: www-esl.tamu.edu

8=/   8=)  :=)   8=)  ;=)   8=)   8=()   8=)   :=)   8=)   8=!   8=)   8=?
8=)   8=)   8=0



-----Original Message-----
From: postman@xxxxxxxx [mailto:postman@xxxxxxxx]On Behalf Of L. Calvin
van Belle
Sent: Friday, September 12, 2003 3:58 PM
To: bldg-sim@xxxxxxxx
Subject: [bldg-sim] Slab on grade f-factor


Thank you everyone for your quick response.  I have found the ASHRAE tables
and none of them apply to my situation.  I have an uninsulated slab that is
8" thick.  All the ASHRAE tables deal with insulated slabs or 6" slabs.

Do the numbers for a 6" slab change significantly when going to an 8" slab?

Calvin

___________________________________________
L. Calvin van Belle     Phone: 206-241-2012
Mechanical Engineer     Fax:   206-241-3101
       lvanbelle@xxxxxxxxxxxxxxxxxxx
                  T. E. I.


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