A split level house I am designing has two stories atop a slab on grade with stemwall surround, and one story atop a crawl space. See the pic attached for a view of the proposed foundation. I need to add some footing steps and detail, but you can get the idea.
Heat for the living area of 2,028 sf will be via mod-con boiler, doing either all-infloor radiant, or a combination of infloor and panel radiators.
Mechanicals will be in the crawl space, accessible via a short staircase down from the slabfloor lower level of the two story stack adjacent. If necessary, we can deepen the small part of the crawlspace where the boiler, controls, and DHW tank goes.
My question relates to heat required for the crawl space itself, an area of 900 sf. Foundation walls will be R-25 ICF (insulated concrete forms).
With heated space above this crawlspace, what is best practice for heating, or not?
Edited 12/19/2008 1:45 pm ET by Gene_Davis
Replies
r25 icf..... the heat loss from the boiler should do it... no loss to the ceiling ( floor )
little loss to the walls... most of the loss will be to the floor .... and once that gets heated up , then you'lll get a flywheel effect
And spray the rims... Now you see this one-eyed midget
Shouting the word "NOW"
And you say, "For what reason?"
And he says, "How?"
And you say, "What does this mean?"
And he screams back, "You're a cow
Give me some milk
Or else go home"
They're gonna be sraying everything else, their feet, the electric boxes, whatever, why not the rims, too. ;-)
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"A stripe is just as real as a dadgummed flower."
Gene Davis 1920-1985
I have seen it forgotten w/Superior Walls! My electrician makes a special effort to duct tape all his boxes after rough-in inspection... saves a lot of time and cleaning up later. Now you see this one-eyed midget
Shouting the word "NOW"
And you say, "For what reason?"
And he says, "How?"
And you say, "What does this mean?"
And he screams back, "You're a cow
Give me some milk
Or else go home"
>>Mechanicals will be in the crawl space,
You don't like HVAC contractors?
My inspection experience is that crawl space mechanicals are generally poorly maintained.
"Ask not what the world needs. Ask what makes you come alive... then go do it. Because what the world needs is people who have come alive."
Howard Thurman
Are you sure you don't want to go deeper and take advantage of basement storage?
It would also be a good place to grow mushrooms. =-)