If the optimum insulation value of 1.6 or so per inch could be achieved, or more accurately if *I* could achieve it, then it seems it might be feasible.
As a novice builder, not expert at anything and also underfunded, I pay close attention to the experiments, successes and failures of others, in addition to the advice of conventional experts.
@Terry, thanks for chiming in, I greatly appreciate your casting an expert eye over my amateur speculations. I didn't understand " 13 –lbs/ft3 and a 6”x23”x24” block does not add up." Do you mean my math is wrong? That wouldn't surprise me. I had been imagining a block 6 inches thick and approximately 2 or 3 feet square
I'm just trying to get a "ballpark" idea whether an ordinary timber frame house could hold the amount of weight it would involve.
I had been imagining a block 6 inches thick and approximately 2 or 3 feet square.
If 13 lbs per cubic foot is incorrect, what is the correct number for weight? I didn't completely follow your calculations, can you dumb it down a little? If 13 lbs per cubic foot is incorrect, what is the correct number for weight? I didn't completely follow your calculations, can you dumb it down a little?
This is an as-yet-unbuilt timber frame, with a "cold" roof, which I understand to mean vented roof with insulation on the attic floor. I understand that the attic would need to be ventilated to prevent humidity build up. No plans or pictures yet. I'm at the stage where I'm trying to get a rough idea of the price of each element, before I can even settle on a size, 24x32 would be ideal but it might have to be much smaller. It will definitely be a simple square or rectangle, probably a 12/12 metal roof. Location northern VT.
I found the answer to my question elsewhere, apparently the numbers offered, $25-35 per sq ft includes no construction at all, just a design on paper. Well worth it I'm sure especially if required by mortgager.
Sizing the rmh is not a problem so I don't require manual j calculations nor a simulation model like BEOPT to determine HVAC loads, but thanks for asking if I know how to do it, that was very helpful.
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