Hello,
I have noticed that when entering detailed mode from the design wizard that equest has put together the layers for underground floors.
I have selected concrete floor on ground with no insulation in the wizard. What I have noticed is that Equest will produce layers using some custom materials for this slab. The material will be called something like "EL1 UFMat (G.NE1.U2.M1)". this material will have some arbitrary R value. it seems that Equest will generate several different layers for different spaces using different materials like this. The materials will have different arbitrary R values.
My question is what are these supposed to represent, and should they be left there for accurate simulation? Also wondering why the R values are all different.
Thank you,
Jason Robinet
Hi Jason,
Take a look at the attached paper. I believe this is what the wizard does
when creating slab on grade and underground floors. The wizard creates
layers that make up an equivalent construction to account for the perimeter
heat loss. When zones have different perimeter lengths, the equivalent
constructions and R-values are going to vary. Someone please correct me if
I am wrong.
John T. Forester, LEED AP BD+C
John,
You are right. I had a chance to verify that some time ago.
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Demba NDIAYE