They sell a set of "calcs" for ~$25. I bought them for my
HDX-5106 and noticed they were full of obvious and not so
obvious errors. Also, the base info they furnished was wrong,
calling out 1 1/4 inch bolts, where 1 1/8 is required.
Fortunately, I measured the holes in the base and discovered
Another issue to keep in mind regarding building permits is
that, while you can check dimensions vs the calcs, you can't
check grade of steel used. UST told me they use various
grades of steel for the same tower design as some customers
pay extra for extra strength. Thus it is not clear to me that
you really know what steel is used in any particular tower.
"HDX-555" only refers to the dimensions of the tower, not
the strength. Basically, the building department has to take your word
for it that the tower has the grade of steel you say it does.
It is interesting that they let you get away with this, while
often requiring a strength test of the concrete. Anyone ever hear
of a tower falling down because the cement base disintegrated?
> I have e-mailed them for a pictorial of one of their products (I am ordering
> a HDX555). I have noticed in their website an absence of this type of
> documentation. I only found info on the concrete base specs., etc.
> Do they supply this info? I found nothing in their website and even Google
> gave up no information, which means it is not out there probably.
> It would be nice to have it for a building permit application.
> Roger W6RD
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