In a message dated 98-06-09 17:55:24 EDT, firstname.lastname@example.org writes:
1. Is there an alternative guy point solution other than the 4x4x4 holes and
cement slab called for by the Rohn manual? i.e screw ins????
Huh? You must be looking at the wrong drawing - there's no slab and the
dimensions are wrong. 70 feet of 45G @ 90 MPH calls for a 4A anchor block -
Dwg. 620643R. The hole dimensions are 3 x 3 x 4 feet deep with 1.5 feet of
concrete in the bottom of the hole and then backfilled.
I wouldn't trust screw-ins. If you knew what the soil capacity was and
had the appropriate sized screw-ins for your tower and windspeed, then I would
consider them. At that point you've probably spent enough to pay for the
regular guys anyway. One variation would be to have separate screw-ins for
each guy wire. Then you're only putting part of the load on each anchor.
>> 2. How does one unload an 1800 lbs of crank-up from the truck? Is the
a flatbed or enclosed? Would like to hear from those who have done it.
That's easy. Arrange to have a crane or boomtruck to be there when the
tower arrives. Then the boomtruck picks it off the truck and then swings it
over into place on the pre-installed base fixture. Takes about an hour and
then both trucks are gone. Cheap, easy and safe. And you only have to handle
the crank-up once. Unless you arrange otherwise, the delivery truck will be
enclosed so the crane has to boom-in to pick it up. Arrange with the trucking
dispatcher to put it on a flatbed if you can.
Cheers, Steve K7LXC
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Administrative requests: towertalk-REQUEST@contesting.com