House second floor takes shape

When I arrived yesterday afternoon, all but three house roof trusses were in place.  I walked inside the first floor and all the way around outside, then climbed the ladder to the second floor, feeling the spaces. I saw in 3D what I’d seen on paper so often and felt the height of ceilings, the shapes of nooks and crannies, and a sense of shelter.

On the second floor I watched Jeff, Tom and JR bring two more trusses into place using a hydraulic lift. It was a made-to-order day with no wind, and they worked together easily.

DSC04303  DSC04307

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Location

Lanesboro, Minnesota
Climate Zone 6 (cold/moist)
Latitude: 43° 44' 18'' N
Longitude: 91° 54' 48'' W

House Size

Net Treated Floor Area: 1,514 SF
Gross Square Footage (House only): 2,210 SF

Building Envelope

Roof: R-99
Wall: R-61
Ground: R-53

Windows & Doors

Glazing: U-0.10 BTU / hour / sq. ft.
Solar Heat Gain Coefficient (SHGC): 0.48”
Frame: U-0.19 BTU / hour / sq. ft.

Modeled Performance

Specific Primary Energy Demand (Source Energy Demand): 12.1 kBTU / sq. ft. / year

Specific Space Heat Demand: 7.0 kBTU/sq. ft. / year

Peak Heating Load: 7,047 BTU / hour

Space Cooling Demand: 0.44 kBTU / sq. ft. / year

Peak Cooling Load: 3,625 BTU / hour

Pressure Test Goal: Whole House Air Changes Per Hour (ACH) = 0.4 ACH 50

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