Table 18. Core sample findings for roof A3.
Moisture
content
Thickness
(% of
TRR
Core
Insulation
(in.)
dry weight)
(%)
Status
14
PER
3/4
1
98
dry
14
EPS
4
0
100
dry
14
EPS
4
1
100
dry
14
EPS
4
0
100
dry
14
PER (frozen)
3/4
244
37
WET
15
PER
3/4
431
20
WET
15
EPS
4
718
54
WET
15
EPS
4
1170
35
WET
15
EPS
4
1566
23
WET
15
PER (frozen)
3/4
194
43
WET
Notes:
Core 14: Deck is rusted badly. Lower perlite could not be sampled by coring. It was ob-
tained from the edge of cut I which was taken in the same place.
Core 15: Deck could not be examined for rusting. Some of the EPS was also frozen.
Table 19. Roof cut I, test results.
Moisture
Thermal resistance
content
Thickness
Density
(% of
As
After
TRR
(lb/ft3)
Insulation
(in.)
dry weight)
received
drying
(%)
PER
3/4
10.1
3.0
2.4
2.0
120
EPS
4
1.2
0
15.3
15.2
101
EPS
4
1.0
0
14.6
14.6
100
EPS
4
1.0
0
14.9
14.9
100
PER
3/4
10.3
136.0
1.4
2.0
70
Notes:
Steel deck is covered with serious rust.
Core 14 was taken at this location.
Figure 38. Hole made when taking core 14 and cut I. The bottom layer of perlite on
the steel deck was wet and the steel was badly rusted.
34
Previous Page
