[TowerTalk] masts.

[jeremy-ca]

> jeremy-ca wrote:
>> There are several grades of fence posts; the cheap stuff is Schedule 15
>> and
>> other choices go up to 83,000 psi yield strength.
>>
>> The 2"  (1.9" OD) 40+ that I use has a yield of 50,000 psi and a bending
>> moment of 14050 lb". Going up to the 2 3/8" OD bumps the bending moment 
>> to
>> 24405 lb". Pretty healthy specs IMO and a good choice when DOM or chrome
>
> The 1.9" OD is "1.5 inch iron pipe size" and the 2 3/8" OD
> is "2 inch iron pipe size".
>
> Rick N6RK
>

Which is not the same as fence industry size. They call it 2" & 2 1/2" for 
the Sch40. Trying to compare sizes across industries that do not have a 
common standard only results in headaches.

Carl
KM1H