ETL 1110-3-498
24 Feb 99
G-9. Building Number 7.
Building number 7 has block walls with an insulated metal siding upper portion. The roof is
standing seam metal. A large number of windows are installed in the upper portions of the wall.
Leakage rate versus internal pressure is shown in Figure G-7. Building leakage rates can be
calculated using equation G-7.
log(y) = C0 + C1log(x)
(eq G-7)
where: C0 = 2.6334308
C1 = 0.58162360
y = leakage rate, L/s
x = internal pressure, Pa
100,000
Wall Type 2
Roof Type 1
10,000
1,000
100
1
10
100
1,000
Internal Pressure, Pa
Figure G-7. Building 7 Leakage Rate.
G-9
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