k4tmc@aol.com wrote:
> Robert,
>
> You did not indicate what will be at the top of the 75 ft AB577 mast.
> That will also have some bearing on how strong your guy point should be.
>
It would have a lot of bearing on the guy points.
> Since you are on a parking lot type area, I assume that you can park
> vehicles on the surface. If so, then make a frame assembly that can be
> held down by the weight of a car/truck by driving a wheel on top of the
> assembly. Or, if you have vehicles with towing capabilities, then use
> the tow hitch assembly to attach guy lines. If they can handle a
> 3000lb boat, then they will handle the 577 mast easily.
>
>
Actually the tires of a car/truck/SUV would give much more gripping
power than the metal "boats" mentioned.
In Robert's group there must be several who own pickup trucks and/or
SUVs. Most, or many have a 3 point hitch on the back. Any of them
configured for towing would have a hitch that could be used, rather than
looking for a winch. However they would need to tie around the mount
and not the ball as a rope or cable can easily slip off the ball.
73
Roger (K8RI)
> Oh, be sure to have the vehicle owners sign waivers relative to any
> damage caused by a falling mast.
>
> 73,
> Henry - K4TMC
>
>
>
>
> -----Original Message-----
> From: Robert West <robert.west@eatmoresoap.com>
> To: towertalk@contesting.com
> Sent: Sun, 26 Apr 2009 1:23 pm
> Subject: [TowerTalk] AB-577 Surface Guy Anchors?
>
> Hello all. I have acquired one of the AB-577 mast kits with the
> extension
> to 75'. I am needing to erect this on a parking lot type area,
> asphalt.
> We are not permitted to penetrate the asphalt so we need to fabricate a
> method to anchor the guys on the surface, such as with weights. I've
> seen a
> method that is used for a non-penetrating mount for large dish antennas
> on
> roofs that consist of steel angle iron welded in a frame and filled with
> concrete cinder blocks bolted together with threaded rod so that they
> don't
> move. Works well in that usage but how about something similar for a
> guy
> anchor? This is a temporary thing so it would need to be easily
> removed.
> But my real question is, besides any other ideas, how heavy would I
> need to
> make these 3 weights? The height is 75' and is rated for 75mph wind.
> Would
> feel safer if the guy anchors could give us 100mph just to be on the
> safe
> side. Maybe a layer or 2 of block and then sandbags?
>
>
>
> Any ideas?
>
> _______________________________________________
>
>
>
> _______________________________________________
> 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
>
>
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|