Contact the manufacturer of the tower and see what they recommend. My U.S.
Tower is 55 feet high and required a slab 5 feet by 5 feet, steel reinforced
and 6 feet deep. This is quite a blob of concrete and the type of concrete
is important also. My son is a civil engineer and I did what he
recommended.

73

W4WEG
wrote in message ...
I just purchased a tilt-over mast that I'd like to erect:

The base section begins with a 16"-square piece of 1/2" steel with four
holes on 12" centers and is welded (with four pieces of steel, sorta
like rocket fins) to a pipe which rises 17.5' to the pivot point.
The tilting part extends 16' further. All of the above pipe is 2 3/8"
in diameter, but a smaller-diameter pipe (for mounting a rotor?) sticks
out the top end of the tilting section another foot or two.

Can someone suggest how big a blob of concrete and how much rebar I'll
need at the bottom to erect this mast to be freestanding?
--
--Myron A. Calhoun.
Five boxes preserve our freedoms: soap, ballot, witness, jury, and
cartridge
PhD EE (retired). "Barbershop" tenor. CDL(PTXS). W0PBV. (785)
539-4448
NRA Life Member and Certified Instructor (Home Firearm Safety, Rifle,
Pistol)