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## Re: [TowerTalk] Guy wire height from anchor to tower

 To: "Towertalk reflector" Re: [TowerTalk] Guy wire height from anchor to tower "Mark Robinson" Sat, 28 Aug 2010 16:38:00 -0400 mailto:towertalk@contesting.com>
 This is handy http://www.csgnetwork.com/righttricalc.html ----- Original Message ----- From: "Dave Hachadorian" To: "Towertalk reflector" Sent: Saturday, 28 August, 2010 4:35 PM Subject: Re: [TowerTalk] Guy wire height from anchor to tower > ------------------------------------ > From: "Mac English" > Sent: Saturday, August 28, 2010 12:10 PM > To: > Subject: [TowerTalk] Guy wire height from anchor to tower > >> I would greatly appreciate it if someone could help me figure >> out how to >> calculate guy wire height from the guy anchor up towards the >> tower. >> >> >> My tower height will be at 70 ft. My first set of guy will be >> at the 32 ft level >> the second set will be around the 68 ft level. The total >> distance to each >> anchor from the base of the tower is 45ft. >> >> On one of my anchors is only 14 feet away from my home. The max >> height on my >> home where the first set of guys will pass is around 11 feet >> high. I need to >> know how high that first set of guys will be at 14 feet from >> the anchor to the >> roof where these guys will pass. The length of the guy wire on >> the first level >> of guys is 53 feet long from anchor to tower. All anchors will >> be about 1ft 8in >> above ground. >> >> I am wondering if the first set of guys will be high enough off >> the ground to >> clear my home. I have some logistical issues with respect to >> where I can place >> the tower & guys on my property because of utilities and the >> placement of >> buildings on my property. >> > > For a horizontal distance of 45 feet, the guy wire will rise > 30.34' (32 - 1.66) > > So for every foot of horizontal distance, the wire will rise > 0.674' (30.34/45) > > For a horizontal distance of 14 ft, the guy will rise 9.436' > (.674 x 14) > > Since the guy started at a height of 1.66', it will be at a > height of 11.096' (9.436 + 1.66) (ignoring sag) above ground when > it passes the > top of your house. That's too close. You could make the anchor > higher, guy higher on the tower, guy further out, or put the > anchor for the lower guy on the other side of the house, if > any of that is possible. > > >> Plus while we are at it I will be digging a 2x2x4 ft hole for >> the base of the >> tower. The anchors will be 5ft deep by a 2 ft wide undisturbed >> hole. I need to >> figure out how much concrete will go in each hole and how much >> concrete will it >> take to fill the tower base. > > You should have about 2" of concrete above grade for the tower > base. > 2 x 2 x 4.166 = 16.664 cu ft = 0.62 cu yd > > I guess you are using raised anchors, so the concrete should be > 2" above grade here also. I think you meant a 2x2x5' square hole. > 2 x 2 x 5.166 = 20.664 cu ft = 0.765 cu yd > > If you meant a 2' diameter round hole 5' deep, it would be > 3.1416 x 5.166 = 16.23 cu ft = 0.6 cu yd > > Dave Hachadorian, K6LL > Big Bear Lake, CA > > > > > _______________________________________________ > > > > _______________________________________________ > TowerTalk mailing list > TowerTalk@contesting.com > http://lists.contesting.com/mailman/listinfo/towertalk _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk
 Current Thread [TowerTalk] Guy wire height from anchor to tower, Mac English Re: [TowerTalk] Guy wire height from anchor to tower, Dave Tipton, W5DMT Re: [TowerTalk] Guy wire height from anchor to tower, Dave Hachadorian Re: [TowerTalk] Guy wire height from anchor to tower, Mark Robinson <=