MIL-HDBK-1003/19
APPENDIX D
EXAMPLE WORKSHEETS
WORKSHEET 1
Schematic Design Parameters
BUILDING SIZE
Heated floor space:
Af =
6800
ft2
Ceiling height:
h=
9
ft
Total external perimeter:
Pt =
684
ft2
NOTE:
Include external perimeter of each floor.
External surface area:
Ae = 2Af + (Pt [multiplied by] h) = 19,756 ft2
External surface-area-to-floor-area ratio:
Ae/Af =
2.91
INSULATION LEVELS
Thermal resistance of the wall:
RWALLo =
22 deg.F-ft2-h
NOTE:
RWALLo is obtained from the contour map in figure 13.
1
Ae
RWALL =
RWALLo = 21 deg.F-ft2-h
3
Af
Thermal resistance of the roof:
RROOF =
1.5 RWALL =
32 deg.F-ft2-h
Thermal resistance of perimeter
RPERIM
insulation:
or
= 0.75 RWALL = 16 deg.F-ft2-h
RBASE
PASSIVE SYSTEM TYPE:
Direct gai
SOLAR APERTURE SIZE (DUE SOUTH ORIENTATION):
Ac
= 0.12
Af o
Ac
NOTE:
is obtained from one of the contour maps in figures 14 through
Af o
Remember to convert from percent to fractional value before
recording the quantity.
Ac
Ae
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