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Subject:
From:
Gerry Leary <[log in to unmask]>
Reply To:
For blind ham radio operators <[log in to unmask]>
Date:
Tue, 17 Dec 2013 05:41:48 -0700
Content-Type:
text/plain
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text/plain (49 lines)
I think you are worrying too much!

Sent from my iPhone this time 

> On Dec 16, 2013, at 6:22 PM, Phil Scovell <[log in to unmask]> wrote:
> 
> Here in Denver, just digging and pouring a basement for a house requires a 
> city inspection and write off before you can pour the concrete and then 
> again afterward.  The suburbs around Denver almost all require building 
> permits before you can put up any kind of a tower and most restrict it to 
> certain heights, too.  A tower as large as Alan is talking about he might 
> get, probably wouldn't be allowed even in Denver county and they used to 
> never require a building permit.  Now I believe the tower has to fall within 
> your property if the thing falls down.  Of course, they don't know that 
> towers just don't falls straight over; it is wind torque that twists a tower 
> like a cork screw and it collapses in on itself.  I'll tell you one thing, 
> if I was putting up something of that nature, I'd want a person from the 
> company there even if it wasn't required by the company.  The quality of the 
> soil can make a big difference with a tower that heavy and with big antennas 
> on it.  Tower installation at any level is an art and rotating towers and 
> hydraulic up and down poles or frame towers are nothing to mess around with. 
> Soil content to a certain depth, geographical requirements, studies of 
> weather patterns, and a lot more are required for any tower installation 
> like Alan is talking about.  You best know something about concrete, 
> digging, soil shifting, root growth from any nearby trees, tree heights, and 
> what long boom antennas do in the winds that are possible in your 
> geographical location before you even do anything.  With the schnook warm 
> high winds Denver gets off the mountain during most of January and February, 
> it can be scarey.  I just had a little 38 foot tower once with a 4 element 
> 20 meter beam on a 26 foot boom and in a 110 MPH wind during the middle of 
> the day blew up and lasted for hours , it rotated the antenna 90 degrees. 
> My friend down the street had a 130 foot Rohn 25G tower with a 6 element 
> tribander at 132 feet and a 2 element 40 at 136 feet with a seamless mast 
> and in that same wind storm, one of his top guys cables at 130 feet snapped 
> off and the tower, he said, was leaning, in the wind I might add, from the 
> 60 foot level up to the top, over about 8 feet at the top.  It never fell. 
> He knew how to put up towers and it was guyed in 4 points up the tower.  How 
> he didn't lose the whole thing in that wind was a miracle to me.  When the 
> wind died, he had to climb all 130 feet and hook that top guy cable back up 
> again.  I just had to climb 38 feet, loosen the bolts on the boom, rotate 
> the antenna by hand back in place, tighten up the boom again, and I was done 
> in 5 minutes.  I'd never own a fixed tower with a big bunch of antennas on 
> it again, that is, I'd want one that automatically lower in wind and was 
> certified installed correctly by the company.  Law sues with stuff like that 
> can get harry.
> 
> Phil.
> K0NX

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