Check my heat loss calculation

[Tracs]

I've done a heat loss calculation spreadsheet for my 40x60x12 shop under construction.

Does anyone want to check it and see if it looks correct? It seems a little high to me, mostly the air infiltration BTUs.

IDT 60
ODT -27

I can't attach the spreadsheet directly, but this link may work. If not I'll try again from home after work.


https://docs.google.com/spreadsheet...ouid=112511685918288083149&rtpof=true&sd=true

 

[TurnipTruck]

Access denied

 

[Tracs]

Access denied

I updated access. Can you tell me if it works now?

 

[PoorUB]

I looked it over and a bit more information there than I care to look through.

Was the final heating BTU 68,000? If that is correct, that seems about right to me.

 

[Tracs]

I looked it over and a bit more information there than I care to look through.

Was the final heating BTU 68,000? If that is correct, that seems about right to me.

Yes, close to that. Here is the final calculation values.

Infiltration seemed high BTUs. I was just wondering how many air changes per hour a spray foamed garage building would actually have.

40x60x12
2x6 walls with at least r20 insulation
R50-R60 attic insulation
R12 under the slab
2" around perimeter slab
2' frost wings buried at 45 degree angle around perimeter