I wrote about this in my audio blog:
http://audioinvestigations.blogspot.com/2011/05/pool-house-dimensions-hit-sweet-spot.html
For the past few days, there had been a bit of uncertainty in my mind about the width of the framed brick walls. I had estimated 9 7/8 inches a few weeks ago, but was surprised when I saw the engineer specified the brick ledge at 5.5 inches, and Ronnie told me the sheathing (which I wanted to be 3/4) has to be within the ledge, hanging over the upper part of the slab.
But now I've figured it out. My mistake was in assuming the 4 inch brick width. That is a "nominal" dimension, actual bricks are between 3 5/8 and 3 3/4. Plus, 3/4 OSB sheathing is actually 1/32 less. That makes the air gap just beyond 1" (actually, 1 1/32) for the larger 3 3/4 bricks. So, as engineers do, the engineer specified an exact minimum specification, which is what most builders want.
OK, that revises my number slightly, and also makes calculation easier. The wall width is exactly the 5.5 inch width of the brick ledge, the thickness of the 2x4 framing (3 9/16 for non-dryed lumber) and the 5/8 drywall (19/32 I believe)
So 5.5 + 3 9/16 + 19/32
5.5 + 3 18/32 + 19/32
5.5 + 3 + 37/32
5.5 + 4 + 5/32
9 21/32
so the width of two walls is 19 10/32
So actual interior dimensions are
14'10" - 19" 10/32 = 13' 2 22/32 = 13' 2 11/16 = 13' 2.6875"
12'6" - 19 10/32 = 10' 10.6875"
a slight increase over previous estimate.
Now this simplfies the height, actually. It's now 9' 6" to get the exact 1:1.14:1.39 ratio (instead of previous estimate 9' 5.5")
All Right! I kept wanting that because I hated specifying the half inch (previously adding in the half inch made both ratios wrong).
Now calculating the square footage, I get:
143.9658
I'll consider that 144, or close enough, a very lucky number (12 * 12).
Two lucky numbers in one day, better stop calculating now.
That would be among the largest of the tiny houses from Tumbleweed. The tiny house series used to range from 65 sqft to 140 sqft, but they've increased the new Popomo to 172 sqft. Decadence!
Or take a look at the 130 sqft pool house (technically pool cabana) from Summerwood.
http://audioinvestigations.blogspot.com/2011/05/pool-house-dimensions-hit-sweet-spot.html
For the past few days, there had been a bit of uncertainty in my mind about the width of the framed brick walls. I had estimated 9 7/8 inches a few weeks ago, but was surprised when I saw the engineer specified the brick ledge at 5.5 inches, and Ronnie told me the sheathing (which I wanted to be 3/4) has to be within the ledge, hanging over the upper part of the slab.
But now I've figured it out. My mistake was in assuming the 4 inch brick width. That is a "nominal" dimension, actual bricks are between 3 5/8 and 3 3/4. Plus, 3/4 OSB sheathing is actually 1/32 less. That makes the air gap just beyond 1" (actually, 1 1/32) for the larger 3 3/4 bricks. So, as engineers do, the engineer specified an exact minimum specification, which is what most builders want.
OK, that revises my number slightly, and also makes calculation easier. The wall width is exactly the 5.5 inch width of the brick ledge, the thickness of the 2x4 framing (3 9/16 for non-dryed lumber) and the 5/8 drywall (19/32 I believe)
So 5.5 + 3 9/16 + 19/32
5.5 + 3 18/32 + 19/32
5.5 + 3 + 37/32
5.5 + 4 + 5/32
9 21/32
so the width of two walls is 19 10/32
So actual interior dimensions are
14'10" - 19" 10/32 = 13' 2 22/32 = 13' 2 11/16 = 13' 2.6875"
12'6" - 19 10/32 = 10' 10.6875"
a slight increase over previous estimate.
Now this simplfies the height, actually. It's now 9' 6" to get the exact 1:1.14:1.39 ratio (instead of previous estimate 9' 5.5")
All Right! I kept wanting that because I hated specifying the half inch (previously adding in the half inch made both ratios wrong).
Now calculating the square footage, I get:
143.9658
I'll consider that 144, or close enough, a very lucky number (12 * 12).
Two lucky numbers in one day, better stop calculating now.
That would be among the largest of the tiny houses from Tumbleweed. The tiny house series used to range from 65 sqft to 140 sqft, but they've increased the new Popomo to 172 sqft. Decadence!
Or take a look at the 130 sqft pool house (technically pool cabana) from Summerwood.
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