Owner manual

33 USG Exterior Ceiling Applications
Wind Uplift Resistance for Exterior Soffitts
USG Drywall Suspension System
compression
post
cross tee
main tee
C
D
B
A
hanger wire
Component Spacing
Max Spacing (in.)
Test
Record
UL
Class
Max
Uplift Load
(PSF)
Equivalent
Wind Speed,
(MPH)
(A)
Main
Runner
(B)
Cross Tee
(C)
12 Gauge
Hanger Wire
(D)
Compression
Post
Exterior soft
Panels
Plenum
Height¹
(in)
Max
compression
post load (lbs)
Test
Standard
UL526
page 36
15 15 77 48 24 24 24
Single layer 5/89
gypsum panels
141 183.2 UL 580
UL526A, B
page 37
15 15 77 48 16 (526A)
24 (526B)
48 30
single layer 1/29
gypsum panels
128 229 UL 580
UL526C
page 38
30 30 108 24 24 48 30
single layer 1/29
gypsum panels
130 225 UL 580
UL526D
page 39
60 60 188 24 24 48 42
double layer 5/89
gypsum panels
76 525 UL 580
UL526E
page 40
90 90 188 24 24 48 30
double layer 5/89
gypsum panels
76 525 UL 580
UL526F
page 41
90 90 188 24 16 48 24
Single layer 5/89
gypsum panels,
single layer 3/89
plywood
76 525 UL 580
NOA No. 12-
0924.03
page 42
N/A +75, -75 171 24 16 24 24
single layer 1/29
or 5/89 glass mat
sheathing w/ direct
applied EFIS
24 300 TAS 202,
TAS 203
 Larger plenum heights require compression post size and gauge to be determined by a quaied structural engineer.