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Posted by Cwatters on December 2, 2008, 3:35 pm
>>> FLOOR: 1 1/2" "Blue board" foam insulation on top of pea gravel - 5"
>>> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
>>> tubing in approx 250' runs
>> Interesting floor construction.
>> In the UK for a non structural floor we would typically build he
>> following top down...
>> 2.5" concrete with heating pipe in
>> 3" foam insulation
>> Damp proof membrane (plastic sheet)
>> Sand "blind" (to stop plastic sheet being punctured)
>> 6" Compacted stone chips (called hardcore in the UK)
> In the us, slab floor construction is typically under the entire house so
> it is structural.
5" doesn't sound very thick for a house. Is that timber frame?. Over here a
garage or shed base is typically 4".
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> in the pex tubing?
> The initial study of the building design recommends a 16800 BTU 85%
> efficient boiler ($2000 US). =A0I am hearing about possibly a more
> efficient way using two 90% efficient 60 gal water heaters.
> Can anyone make some suggestions to me? =A0I live in Northern Colorado.
> Project description:
> 42 x 80 Pole style building, single level (metal siding + metal roof),
> 12 ft side walls
> FLOOR: =A01 1/2" "Blue board" foam insulation on top of pea gravel - 5"
> concrete slab w/ pex tubing on 12" centers - 3 zones (3750' of 1/2"
> tubing in approx 250' runs
> INSULATION: Walls- R-26 -- Ceiling- R-38
> Thanks!