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61. [TowerTalk] guy tension (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Fri, 02 May 1997 20:55:13 -0500; As you correctly noted, the tension on guy wires is to hold a tower in place as a load - wind or otherwise is applied. I will try to explain this without going into a lot of math. Any structure, when; /archives//html/Towertalk/1997-05/msg00068.html (10,948 bytes)
62. [TowerTalk] FS Rohn 25 Fold Over Tower Section / Dayton plans (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Mon, 05 May 1997 20:33:25 -0500; After considerable internal debate, I have decided against installing a fold over tower. The VHF UHF array I have in mind is too big and the four way guying does not work out in the location I have i; /archives//html/Towertalk/1997-05/msg00137.html (7,953 bytes)
63. [TowerTalk] 45G top plates (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Tue, 06 May 1997 07:16:06 -0500; Rohn literature presents only one of many possible tower guying installations. I hesitate to speak for them, but they appear to want to present a typical tower for suppport of a business sized antenn; /archives//html/Towertalk/1997-05/msg00147.html (8,794 bytes)
64. [TowerTalk] Rohn joint bolts (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sat, 10 May 1997 01:29:23 -0500; I think they are fine thread to keep as much of the basic bolt materail available for shear strength. Fine threads remove less material. I nt eh Rohn towers the threaded portion of the bolt is in she; /archives//html/Towertalk/1997-05/msg00288.html (8,726 bytes)
65. [TowerTalk] Rohn joint bolts (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sat, 10 May 1997 01:40:50 -0500; bolts as an alternative. I don't have the numbers right in front of me, but 300 series stainless steel (most bolts and nuts are made of 305) has about 80% of the strength of the grade five bolts that; /archives//html/Towertalk/1997-05/msg00289.html (8,661 bytes)
66. [TowerTalk] Rohn joint bolts (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sat, 10 May 1997 02:10:48 -0500; Sorry for the typos - it is getting late after the club meeting: In the Rohn towers the threaded portion of the bolt is in shear loading so more cross sectional area means a stronger bolt and joint.; /archives//html/Towertalk/1997-05/msg00290.html (9,506 bytes)
67. [TowerTalk] Rohn joint bolts (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sun, 11 May 1997 21:56:51 -0500; The bolts in a Rohn 25 tower are what keeps the towers sections from jamming themselves together for a totally compressive load. So they are pretty important from that stand point. If the tower has m; /archives//html/Towertalk/1997-05/msg00315.html (11,978 bytes)
68. [TowerTalk] An Engineering Question (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Tue, 27 May 1997 20:56:50 -0500; With some decent calculations, I could see going to 65%. For 40 and 50 percent you have to get creative. The thing that might be worth looking at would be to go to 6 (yes six) guy anchors for the top; /archives//html/Towertalk/1997-05/msg00640.html (12,612 bytes)
69. [TowerTalk] Re:An Engineering Question (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sat, 31 May 1997 13:16:53 -0500; Being in land locked Iowa, I am definitely not an authority on this, but I don't think too may sailors run full sails in an 80 knot blow, no matter how big their vessel. Steve -- FAQ on WWW: http://w; /archives//html/Towertalk/1997-05/msg00763.html (8,384 bytes)
70. [TowerTalk] Bent mast. (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Wed, 02 Apr 1997 21:03:45 -0600; I have seen bent masts before. Generally sawing them off is dangerous and a lot of work. It is only slightly safer to use a gin pole. I have used a piece of 10' electrical conduit to extend my reach; /archives//html/Towertalk/1997-04/msg00069.html (10,716 bytes)
71. [TowerTalk] Tower Falling Radius (long) (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Fri, 04 Apr 1997 22:26:08 -0600; What we are sort of talking around is a Failure Mode and Effects Analysis. (This is also called the systematic application of Murphy's Law.) This is where you look at every part and do a "what if" an; /archives//html/Towertalk/1997-04/msg00138.html (13,050 bytes)
72. [TowerTalk] 70-ft Debris Radius? (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sat, 05 Apr 1997 12:32:50 -0600; Generally that is one of the hidden agenda items/ ploys that local officials have used. de n0yvy steve -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com; /archives//html/Towertalk/1997-04/msg00151.html (8,336 bytes)
73. [TowerTalk] care and feeding of belts (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sun, 06 Apr 1997 13:25:38 -0500; The belt will stay more flexible than you will. I have been up a tower with 10 degree weather and -20 windchill. Fortunately it was short tower and I was not planning on being up long. My problem was; /archives//html/Towertalk/1997-04/msg00178.html (8,015 bytes)
74. [TowerTalk] Name that tower? (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sun, 06 Apr 1997 13:39:13 -0500; This sounds like the construction that was used by Alliance Towers in Sioux City Iowa. They went out of business in the 80's I think. You might try contacting Ehresmann Enginneering in Yankton S.D. I; /archives//html/Towertalk/1997-04/msg00181.html (8,417 bytes)
75. [TowerTalk] removing silicone (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Sun, 06 Apr 1997 22:38:16 -0500; I cann't guarantee this will work, because I don't know exactly what you have. I would use a hot lacquer thinner product from Ditzler Paint their identification is DTL-16. This is a high volitility l; /archives//html/Towertalk/1997-04/msg00188.html (9,514 bytes)
76. [TowerTalk] Running ac power through the woods (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Mon, 21 Apr 1997 20:59:01 -0500; I think the NEC would say 24 inches in this case. But I agree about trenching in the woods, not a lot of fun, and it is hard on trees. I am also not too happy thinking of just running it on the groun; /archives//html/Towertalk/1997-04/msg00679.html (9,218 bytes)
77. [TowerTalk] PLP grips (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Tue, 22 Apr 1997 20:06:45 -0500; Standard guy strand is a left hand lay. The way you tell left hand from right hand lay is to look at the end - any end - and if the wire on top that is going away from you goes around to the left and; /archives//html/Towertalk/1997-04/msg00715.html (9,903 bytes)
78. [TowerTalk] Information needed (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Tue, 22 Apr 1997 20:22:14 -0500; (This answer is a repost of information that I have given out before so if it looks familiar, then hit the delete key.) Sounds like you at least have your foot in the door. Went through this several; /archives//html/Towertalk/1997-04/msg00717.html (14,605 bytes)
79. [TowerTalk] Cutting EHS? (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Tue, 22 Apr 1997 21:01:32 -0500; For 3/16 and 1/4 I use bolt cutters. Anything bigger I use a cutting torch. Have seen bolt cutters used up through 1/2" but takes some big bolt cutters and some very strong arms. BTW doing a little w; /archives//html/Towertalk/1997-04/msg00720.html (8,917 bytes)
80. [TowerTalk] EIA/TIA 222-F (score: 1): Author: sawyers@inav.net (Steve Sawyers n0yvy); Date: Thu, 24 Apr 1997 21:09:07 -0500; I have seen similar corrosion here in the midwest. Specific case was a 10' long expanding bell style anchor. The 3/4" rod penetrated from a loam into a sand layer at 5' of vertical depth. In the area; /archives//html/Towertalk/1997-04/msg00771.html (12,005 bytes)

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