[TowerTalk] Anchor Bolt Grade

[Lou Laderman]

I recently had to drill and epoxy-in 2 anchor bolts for my HDX-555. UST, via
Remi their engineer, recommended purchasing A36 or B7 spec, the latter being
stronger. Since A36 was the standard UST uses. I saw no need to spend more
for stronger anchor bolts. 

73, Lou W0FK  

On Wed, Apr 22, 2026 at 9:30?AM Bob K6ZZ via TowerTalk <
towertalk at contesting.com> wrote:

> Hi Folks,
>
> Is there any downside to using anchor bolts with a tensile strength 
> that exceeds the tower foundation design requirements?  All other 
> specifications would be the same other than Grade.
>
> I am helping a friend reinstall a UST HDX-689. The foundation design 
> specifies Grade A36 headed anchor bolts; however, the supplier can 
> provide Grade A55 bolts for the same price with a faster delivery time.
>
> I assume this would not be an issue, but I wanted to verify before 
> proceeding.
>
> Thanks,
>
> Bob K6ZZ
> _______________________________________________