Gene Smith wrote:
> Fellow reflector members:
> I know that a tower mounted ON, not in/through a
> concrete base needs a grounding cable. But in
> the case where the tower, Rohn HDBX-48 in my
> case, will be mounted onto metal stubs (BXB-8)
> that go through the concrete and are touching
> the ground underneath, is it still necessary
> for an additional grounding cable?
> I've got a feeling that there are some codes
> governing this but I just don't know where to
> turn to get them. The Rohn manual for the
> HDBX-48 doesn't specify anything in the way of
> Thanks in advance for advice!
Please buy and READ the relevant standards for this subject before you
make assumptions. This thread has been on this reflector many, many
times. That standard is:
ANSI/TIA/EIA-222-F, June 1996, Structural Standards for Steel Antenna
Towers and Antenna Supporting Structures.
This document is available from Global Engineering Documents,
1-800-854-7179, for about $95 shipped FEDEX to you.
It is THE standard that answers your questions and should be on the book
shelf and read by anyone owning a tower. In fact, many counties require
PE stamping of drawings that state they meet this specification.
BTW, the "exploding tower base" was declared mythical last year.
All towers must be grounded per ANSI/TIA/EIA-222-F.
It is very educational book of approximately 114 pages.
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