In a message dated 1/13/2006 3:37:53 P.M. Pacific Standard Time,
> In the last storm one of the four one inch diameter 27 inch long anchor
bolts holding my MARB base for my self supporting (unguyed) US Tower MA 550
snapped just below the leveling nut. I have lowered the tower and braced it
with a 6 x 6 and a hydraulic jack opposite the snapped bolt. The remaining
leveling nuts can not currently be turned. The tower has been in place for
approximately 12 years. The concrete base is approximately 3 feet by 3 feet
by 6 feet deep and steel reinforced in accordance with US Tower
recommendations for the MARB 550 base and the MA-550 self supporting tubular
> Does anyone know of any contractors I can contact in California
in the bay area) for advice and help who specialize in tower work?
> Can I simply take the tower and antennas down, remove the MARB support
cut off the remaining three anchor bolts, have four new 27 inch holes
drilled in the concrete and then have four new 1 inch diameter by 27 inch
long new anchor bolts epoxied in........or do I need to hire a couple of
guys with jack hammers to take out the 2 ? cubic yards +/- of steel
reinforced concrete and start over?????? ARRGGHHH!
The simplest thing would be to look in the yellow pages for a mobile
welder and just have him stop by and weld the anchor rod and nut together.
Simple and cheap.
OTOH if you wanted to re-do it, epoxying in new anchor bolts is
pretty simple but pretty involved since you have to take everything down. Me?
get it welded.
If you want to pursue the second option, let me know. I'll be in
the greater SF Bay Area at the end of this month doing tower work if you want
to get together.
TOWER TECH -
Professional tower services for commercial and amateur
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