[TowerTalk] Pad and Pier Foundations

[K8RI on Tower talk]

I haven't seen this mentioned, but if the hole is deeper than you are tall 
(there is a specific dimension but I've forgotten it) and you are working in 
the hole,  you need to have fresh air pumped into the hole

Of course if you have hired a crew they are under OSHA obligation to do so.


Roger Halstead (K8RI and ARRL 40 year Life Member)
N833R - World's oldest Debonair CD-2
www.rogerhalstead.com

> At 12:25 PM 7/11/2005, Kelly Johnson wrote:
>>OK, I can buy that.  So, if they are spec'ing square holes for
>>commercial users then those commercial users must have a reasonable
>>way of creating the required holes.  It seems unlikely to me that they
>>go down to Home Depot and hire a couple guys from the street to dig
>>the hole by hand :-)  Anyone know what the commercial guys do?
> The spec is more of a guideline for the Engineer, rather than a set of
> prints to build from. The commercial guys, since they can pay for an
> engineer, can use any shape hole that's convenient to dig. Backhoes dig
> cubes,  drills/augers drill round ones.  Around here, deep narrow round
> holes seem popular, albeit expensive. For cheap jobs, Square holes w/
> backhoe are used.  Nobody digs a 6x6x6 ft hole by hand on a commercial 
> job.
> Too easy to get a backhoe or bobcat and OSHA shoring requirements for
> anything over waist deep are pretty onerous.
>
> Cemetaries use backhoes.
>
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