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Steepness and flatness limits for guy strands
4-25
TM 5-684/NAVFAC M0-200/AFJMAN 32-1082
bly, be sure to provide adequate temporary support for the pole and to maintain clearances from energized lines. The anchor rod must be in line with the anchor guy. Try to attach only one guy to the eye of an anchor rod, but never more than two. If two guys are attached, the direction of the anchor rod must be the same as the resultant angle of the two guy strand angles.
a.Patent anchors. Patent or manufactured anchors, as shown in figure 4-19, are most often used because they are the easiest, quickest, and least expensive to install. If properly installed, there is no maintenance required as long as the anchor holds. If the anchor does not hold, then replacement, reduction of load, or positioning of one or more additional anchors that do not disturb the original installation (including the cone of earth above the anchor) will be required. Screw anchors in swampy soil may sometimes be screwed to a greater depth by means of an extension rod to restore holding power. The hole drilled for cone or expansion anchors should be no larger than necessary and the backfill firmly tamped.
b.Other anchors. Where patent anchors are not feasible, more expensive guying methods must be used.
(1) Log anchors. If the soil has little holding ability, the greatly increased bearing of a log anchor, sometimes called a log deadman, may be required. The log anchor is usually cut from a sound section of an old pole and should be thoroughly treated before installation. BACK | NEXT Easy Access To All Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
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