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Carolinagold
| | Posted on Wednesday, January 22, 2003 - 7:31 pm: | 
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Want to put up a tower 60ft high. Allready got the footin down. Just need to find out how many. How far apart. And what size guy wire to use.
P.S Wind gets real bad around here at the end of winter till the midddle of spring. |
Triplecguy
| | Posted on Thursday, January 23, 2003 - 2:32 pm: |
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From what I have read it should be guyed every 20 feet in height, in 3 directions 120 degrees apart from each other, and distance from the base outward to the anchor point of the guy wire should be 5/8 of the height the wire is being attatched at. So you should guy it at 20, 40, and 60 feet high, and take 5/8's of each of those heights and measure it out from the base. 1/4" aircraft cable should work fine and should be tightened to 1/10th of it's breaking strength. If you have never installed a tower before it would be advisable to have someone with experience "supervise" the construction. In case you weren't aware, US tower makes a number of freestanding towers that are very affordable and only need a nice concrete footing.
*****DISCLAIMER***** I could be wrong on those specifications I gave. Please research this or talk to the tower manufacturer. A poorly installed tower can damage your home, vehicles, or worse YOU. People can DIE from towers falling or striking power lines.
DAN |
Stepchild
| | Posted on Monday, March 03, 2003 - 9:11 pm: |
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I'm also wanting to put up a free standing tower (40-50ft)#1,What size should the base be?
#2,Can I use a hinge plate at the base?
#3,Is this even a good idea with a MR4 beam?
I live in southwest AR and we have our share of strong storms in the spring and fall.Thats why I would like to be able to raise and lower it as needed.I've been looking for a crank up for about 5yrs with no luck.I've got a pretty good idea for the hinge plate using 1/2"steele with a 1/2 a stick of rohn tower on the bottom and set that in the concreate.Any ideas will be helpful Thanks Stepchild |
Crafter
| | Posted on Tuesday, March 04, 2003 - 12:37 am: |
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I used a rohn 25 with mine when I lived in north texas southern oklahoma never had any problems except during ice storms. Don't turn it till the ice is off the rotor bell or the ring gear will break sometime's. Mine was in concrete and anchored to the eve of the roof also. I used pipe and welded plate steel to each side and drilled bolt holes in the plate for the tower to be bolted too, I remove one bolt and it would hinge down. |
Stepchild
| | Posted on Tuesday, March 04, 2003 - 1:55 am: |
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Hey Crafter,How big was your concrete base?I was thinking about 3x3x5 with the piece of tower for reinforcement.I'm also looking for a rotor and control box for the MR4. Stepchild |
Crafter
| | Posted on Tuesday, March 04, 2003 - 3:55 pm: |
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I used 4x4x5 for the pipe You might try e-bay for a rotor they been going for decent prices thus for. Thats a good spot for a rotor plate too. I finally made one out of plate steel for mine. Check it out though cause sometimes they go for 20.00 .
You can e-mail me at kc5djb@yahoo.com if you have any questions. |
Crafter
| | Posted on Tuesday, March 04, 2003 - 3:55 pm: |
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I used 4x4x5 for the pipe You might try e-bay for a rotor they been going for decent prices thus for. Thats a good spot for a rotor plate too. I finally made one out of plate steel for mine. Check it out though cause sometimes they go for 20.00 .
You can e-mail me at kc5djb@yahoo.com if you have any questions. |
Simon
| | Posted on Wednesday, March 05, 2003 - 10:16 am: |
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I had a 40ft up(Australia) with no guy and a 3x3x3 basepad.It stood up to many a a cyclone. In using guys tripleguy was almost right 3 guys at 20, 40 &60ft but allguys can and usually do go back to one anchor point about 1/2 to5/8 the tower heightout fromthe base.
This is the same way commercial towers are guyed (over 25years in the industry bythe way). When done this way using proper anchor points (takea look at theARRL Handbook for good anchors for guy wires) there is minimal risk of a tower falling.By the way my 40ft even survived an earthquake (5.6on theRichter). The 60ft at our rescue base was guyed using this method and didnt evensway during the same quake. |
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