TYPICAL MAGNESIUM ANODE SIZE
may be round, square, or D shaped)
2.3
76
X
76 X 203
5.9
133 X 133 X 286
4.1
76
X
76 X 356
12.3
133 X 508
5.5
102
X
102 X 305
14.5
191 X 457
7.7
102
X
102 X 432
20.5
191 X 610
14.5
127
X
127 X 521
30.9
216 X 711
22.7
178
X
178 X 406
45.5
254 X 610
TYPICAL MAGNESIUM ANODE SIZE
(Cross sections may be round, square, or D shaped)
NOMINAL GROSS
NOMINAL
APPROX.
WT lb PACKAGED
NOMINAL PACKAGE
WT. LBS.
SIZE (IN)
IN BACKFILL
DIMENSIONS (IN)
_________________________________________________________________________
3
3
X
3
X
5
8
5-1/4 X
5-1/4 X 8
5
3
X
3
X
8
13
5-1/4 X
5-1/4 X 11-1/4
9
3
X
3
X
14
27
5-1/4 X
20
12
4
X
4
X
12
32
7-1/2 X
18
17
4
X
4
X
17
45
7-1/2 X
24
32
5
X
5
X
20-1/2
68
8-1/2 X
28
50
7
X
7
X
16
100
10 X 24
2.1.3
Packaged Anodes
Anodes shall be provided in packaged form with the anode surrounded by
specially-prepared quick-wetting backfill and contained in a water
permeable cloth or paper sack. Anodes shall be centered by means of
spacers in the backfill material. The backfill material shall have the
following composition, unless otherwise indicated:
Material
Approximate Percent by Weight
Gypsum
75
Bentonite
20
Sodium Sulphate
5
Total
100
2.1.4
Zinc Anodes
Zinc anodes shall conform to ASTM B 418, Type II.
2.1.5
Connecting Wire
**************************************************************************
NOTE: Any pinhole, cut, scratch or other damage to
the anode cable exposing bare copper to the
electrolyte will result in early failure of the
cathodic protection system. For this reason,
special, extra heavy insulation is used on anode
cable. While it is often expedient to use the same
type wire for the cathodic (negative) cable in order
to avoid a mix-up in the field, the cathode cable is
SECTION 13110A
Page 15
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