DOE-2 Energy Modeling Summary - Office Building
Page 3 of 21
BUILDING ENVELOPE AND INTERIOR WALL CONSTRUCTIONS
Minimal Facade Renovation:
Full Facade Renovations
Windows:
Windows:
C Double pane, Low-e
C
U center of glass
0.32
Same as in minimal facade renovation -
C
Visible transmittance
57%
area of window changes
C
Shading coefficient
0.35
C
Thermally broken aluminum frames
C
U fenstration
0.43
Exterior wall construction (basement -
Exterior wall construction (basement -
between parking and conditioned ):
between parking and conditioned ):
C
8" concrete masonry units (CMU)
C
3 e" steel studs @ 24" o.c. w/R-11 batt
Same as in minimal facade renovation -
insulation
area of window changes
C
e" gypsum board
C
Effective U value = 0.113
Exterior wall construction (basement - between
Same as in minimal facade renovation - area
ground and conditioned ):
of window changes
C
12" concrete walls
C
Effective Uvalue = 0.02
Exterior wall construction (1st & 2nd floors):
Same as in minimal facade renovation - area
C
of window changes
3" handset stone
C
1" air space
C
8" CMU
C
3 e" steel studs @ 24" o.c. w/R-11 batt
insulation
C
e" gypsum board
C
Uvalue = 0.10 (includes air films)
Exterior wall construction (3rd thru 9th floors):
Slab on grade construction (lower basement
C
level):
Precast concrete panels
C
C
4" concrete slab
1" board insulation
C
C
Effective Uvalue = 0.025
6" steel stud @ 16" o.c. w/ R-19
fiberglass batt insulation
C
" gypsum wallboard
C
Uvalue = 0.066 (includes air films)
APPENDIX J - GSA LEED COST STUDY
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