i 17 -
Table . ‘The Times of Fall Through 5,000-foot Layers (hours),
layers
Particle Size (microns)
555
375
21 162 120 100
(1000's of feet)
1025
120-115
008
.027
.043
.070
.19
.33
.kS
115-110
«009
-026
OL
O71
19
33
oS
110-105
° @10
* 029
e OLS
e 07 2
e 19
* 33
e hs
105-100
100-95
95~90
9085
2012 .030 .0L7 $073
O12 .032 .0b9 «6075
-013 '.032 .050 .077
Ol .033 .052 .079
1.19
«019
.19
1.19
.33
633)
.33
.33
LS
LS
.h6
46
8580
OlL .034 1.054 .082 .20 .33 .hi6
-OL5
.036
.057
.085
75~70
O16
-038
060
089
Oh
1.069
.097
.22
80=75
‘
.20
.33
.k6
ok
23k
246
13h
Ok?
hd
252
.53
O~65
e019
60~55
202, .047 307, .102 .22 .35 .48
65~60
.O4l .06h 1093 «22
022
23h
27
55=50
S05
45<40
2025
3027.
030
.051 .080 .108
.056 4086 .114
.060 .092 .12.
.23
.25
.%
.36
.37
.3
35=30
e 035
069
10k
0138
e 3
«43
a 58
30-25
. 037
20h0
C43
G46
O49
052
. O7k
elll
.079 «6119
085 1127
6092 .138
.10L «01SL
.112 .166
ok?
e 31
e L6
e 61
o25
«©6650.
«75)—s21.00
40=35
2032 .065 .099 .19
2520
2-15
15-10
10-5
5-0
Time to fall from
35,000 te 5,000
feet (howra)
Ne thrt ee
.
~
-
he
oa
:
*
ee45
«0159
.17L
.18h
6 20L
1219
.
.27 .Wl .56
632 «9.65
23h «251 68
.36 .Sh 172
«038 «2ST 8
1.0 .60 .80
2.00 3.00 h.00