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Old 05-20-2016, 09:36 PM   #1
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Default Replacing light poles

Hey looking for some advice on how to approach this particular job.

Current installations consists of a 20ft pole with two HPS heads.
Customer would like a 30ft pole with 3 LED heads.

My concern is the existing pile I have no way of checking depth on it to verify it could work with the new pole. Is this something an engineer should be getting involved with or should we just get a new pile drilled beside it ? Any advice is much appreciated
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Old 05-20-2016, 10:05 PM   #2
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Your profile doesn't state your location, but if high winds would be involved, I definitely would have it engineered first.
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Old 05-20-2016, 10:06 PM   #3
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Your changing the load dynamic's.

I personally would bring in a structural engineer.
They probably have a rate for dealing with these type of situations.
If you are even thirsty, you are two quarts low.
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Old 05-20-2016, 10:33 PM   #4
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As other guys spoke up about this and i agree with them..

Get engineer out and they can take a look at the pole base...

As you are increasing height that will affect the pole base..

Try to get more info to engineer so they can tell you and the customer what is the situation is..

Most likeky you will have to make larger pole base... ( check with engineer detals for the base )
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Old 05-20-2016, 10:50 PM   #5
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Don't be surprised if you have to dig a pilot hole to determine the actual depth of the existing...

And that some compaction test will be ordered.

Yes, the compaction around the old pole base has a material impact on any engineering calcs.


Just exactly whose brain wave decided that the poles needed an extra TEN FEET?

You must realize that the industry makes NO END of fixtures that can spray the lumens all over the lot -- even at 20 feet.

Further, that the makers have amazingly detailed engineering WRT wind load tolerances for their stuff.

The folks in the MOST trouble -- the Gulf and Atlantic coasts. ( Hurricanes. )

NOTHING ( much above ground) will survive tornadoes -- so nothing is engineered to do so.

I don't know if "C" is the Carolinas, Canukistan, California -- or -- Connect-I-Cut, the notorious 'electrician's state.'

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Old 05-20-2016, 11:42 PM   #6
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If you can probe the soil around properly, you should be able to determine the depth using simple math.
I'm 480Sparky, and I approved this message.
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Old 05-21-2016, 08:06 AM   #7
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There are poles with wind load ratings on the cut sheets. I used to permit them all the time when I was in the bldg dept. I never required an engineer.

The cut sheet will have minimum soil conditions for direct burial and foundation specs & bolt pattern for poles which bolt to a poured concrete foundation.

If you can take a picture of what you have, it will go a long way in advising you on how to proceed. Also give us a little bit more info on what the owner wants. Does the pole appearance matter? Is this industrial or a shopping center? Permanent or temporary? Does it matter if they're wood or concrete?
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