MIL-HDBK-1191
TABLE 7-1
MAXIMUM THERMAL TRANSMISSION VALUES FOR
DoD MEDICAL AND DENTAL TREATMENT FACILITIES
WATT/m2-OC (BTU/hr-ft2-OF)
HEATING (1)
DEGREE
GROSS
OPAQUE
CEILING/
FLOOR
o
C (oF)
DAYS
WALL(2)
WALLS(3)
ROOF(4)
SPACE(5)
GRADE(6)
UO
UW
UR
UF5
UFG
Less than 560
2.15
0.853
0.284
0.568
1.647
(Less than 1000)
(0.38)
(0.15)
(0.05)
(0.10)
(0.29)
561-1110
2.15
0.853
0.284
0.454
1.363
(1000-2000)
(0.38)
(0.15)
(0.05)
(0.08)
(0.24)
1111-1670
2.048
0.568
0.227
0.397
1.192
(2001-3000)
(0.36)
(0.10)
(0.04)
(0.07)
(0.21)
1671-2220
2.048
0.568
0.170
0.397
1.022
(3001-4000)
(0.36)
(0.10)
(0.03)
(0.07)
(0.18)
2221-3330
1.760
0.454
0.170
0.284
0.794
(4001-6000)
(0.31)
(0.08)
(0.03)
(0.05)
(0.14)
3331-4440
1.590
0.397
0.170
0.284
0.683
(6001-8000)
(0.28)
(0.07)
(0.03)
(0.05)
(0.12)
Over 4441
1.590
0.397
0.170
0.284
0.568
(Over 8000)
(0.28)
(0.07)
(0.03)
(0.05)
(0.10)
TABLE 7-1 NOTES
(1) Degree-Day value from the joint service Manual TM 5-785,
NAVFAC P-89 and AFM 88-29 Engineering Weather Data shall be used.
(2) Gross wall (UO) values include all doors and windows, window
frames, metal ties through walls, structural steel members that protrude
through all insulation to the exterior, or adjacent to the exterior, and
continuous concrete or masonry walls or floors that extend from inside heated
spaces through the building envelope to the exterior, e.g., fire walls that
extend above the roof and concrete floor slabs that extend beyond the
exterior walls to form a balcony or terrace. Maximum UO value will put a
limitation on the allowable percentage of glass to gross wall area in a
building. It should be noted that in hospital, medical, and dental
facilities, which are positively pressurized, the 10 percent limitation on
glass to gross wall area for walls facing a prevailing winter wind might not
be appropriate. Insulating glass on the building will allow a higher
percentage of glass in comparison to single pane glass. The U-value of each
wall component shall be factored by the percent of the total area it covers.
7-5
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