[TowerTalk] Proper bolt sizes for Rohn 25G

[K4BEV at aol.com]

In a message dated 1/19/05 8:54:36 A.M. Central Standard Time,  
k4gmh at arrl.net writes:

Some of  the bolts bent, but none sheared.  The ones that 
bent had ripped the  tower leg rather than break.


This is why different bolt types are used in applications.
Grade 2 bolts stretch and break easily.
SS bolts stretch, but are hard to break.
Grade 5 bolts hardly stretch but do break.
Grade 8 bolts do break, but not easily (if at all).
 
In some applications one would want the assembly to stay together no matter  
what happens to it (Grade 8). However the assembly its self may be damaged  
(bent) beyond repair.
In other applications a bolt, or bolts, failing *might* preserve the  
assembly's integrity so that it could be put back together with minimal  damage.
 
This is how our ME explained it to me - An electrical guy.
 
73, Don - K4BEV