Update:
Finally US towers gave me the specs. for their
MAB base with a MAF fold-over kit. From the specs,
it's a 2.5' x 2.5' x 3.5' block of concrete which is
22 cu. ft. or ~3,000 lbs. The fold over and guy-less
support requirement for the ALM-31 makes the base
that massive which is OK. I've decided to use a local
concrete contractor to pour the premixed concrete
into the hole with a #3 rebar grid set and a form for
four, 2' x 3/4" galvanized anchor bolts at the ready.
73s,
Gary Sitton, K5AMH
gasit...@comcast.net
On 4/8/2017 14:16, Gary Sitton via BVARC wrote:
Guys:
I had planned to bolt a statue of a "Garden Nymph"
using the old base foundation and studs whenever I
have to sell the house, Hi.
73s,
Gary Sitton, K5AMH
gasit...@comcast.net
On 4/8/2017 13:44, Bruce via BVARC wrote:
Only bad side to leaving concrete 6 inches below the ground surface
is that water will build up or you fill it with dirt. In either way,
you leave the base of your tower and bolts in water/moisture and they
will rust. An early demise in some cases. I went about an inch above
ground level so the water can drain off. You need to see which method
is best for you. If you are concerned about selling your house, you
can always break up the top and then throw dirt on it.
73...bruce
On 4/8/2017 1:09 PM, Sam Neal via BVARC wrote:
Hello, Scott is correct on the volume per sack & I was mistaken.
According to Quikrete's website, each 80 pound bag provides .6 cubic
foot of cement. Some one suggested leaving the top of the concrete
approximately 6 inches below ground level. This is a very good idea.
Should you wish to take the tower down should you sell your home,
the tower legs can be cut off at cement level and dirt/grass, ect
used to cover it, leaving no trace it was there. Don't forget
installing a good ground for the tower other than lightening's route
through the cement to ground. Sam N5AF
_______________________________________________________________ >>
On Apr 7, 2017, at 4:30 PM, Scott Medbury via BVARC >> > wrote: >>
>> A sack of sackrete is less than 1 cubic foot. It weighs >> about
80 pounds and a cubic foot of concrete weighs from >> 90 to 96
pounds before water is added. >> >> Scott KD5FBA >>
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