UFC 3-440-01
14 June 2002
Table C-1. Data for Calculating pH of Saturation (pHs) Calcium Carbonate
Calcium
M alkalinity
Total
Temperature Range
Solids
A
B
C
(mg/l of
D
(mg/l of
F
(C)
CaCO3)
(mg/l)
CaCO3)
50 - 300
0.1
32 - 34
(0 - 1)
2.6
10 - 11
0.6
10 -11
1.6
400 - 1000
0.2
36 - 42
(2 - 6)
2.5
12 - 13
0.7
12 - 13
1.0
44 - 48
(7 - 9)
2.4
14 - 17
0.8
14 - 17
1.2
50 - 56
(10 -13)
2.3
18 - 22
0.9
18 - 22
1.3
58 - 62
(14 - 17)
2.2
23 - 27
1.0
23 - 27
1.4
64 - 70
(18 - 21)
2.1
28 - 34
1.1
28 - 35
1.5
72 - 80
(22 - 27)
2.0
35 - 43
1.2
36 - 44
1.6
82 - 88
(28 - 31)
1.9
44 - 55
1.3
45 - 55
1.7
90 - 98
(32 - 37)
1.8
56 - 69
1.4
56 - 69
1.8
100 - 110
(38 - 43)
1.7
70 - 87
1.5
70 - 88
1.9
112 - 122
(44 - 50)
1.6
88 - 110
1.6
89 - 110
2.0
124 - 132
(51 - 56)
1.5
111 - 138
1.7
111 - 139
2.1
134 - 146
(57 - 63)
1.4
139 - 174
1.8
140 - 176
2.2
148 - 160
(64 - 71)
1.3
175 - 220
1.9
177 - 220
2.3
162 - 178
(72 - 81)
1.2
230 - 270
2.0
230 - 270
2.4
350 - 430
2.2
360 - 440
2.6
440 - 550
2.3
450 - 550
2.7
560 - 690
2.4
560 - 690
2.8
700 - 870
2.5
700 - 880
2.9
800 - 1000
2.6
890 - 1000
3.0
Table C-2. Prediction of Water
Tendencies by the Ryznar Index
Ryznar Index
Tendency of Water
4.0 - 5.0
Heavy scale
5.0 - 6.0
Light scale
6.0 - 7.0
Little scale or corrosion
7.0 - 7.5
Significant corrosion
7.5 - 9.0
Heavy corrosion
9.0 and higher
Intolerable corrosion
C-2
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