Site lighting

[jmsbrush]

I have a commercial job that I'm bidding and I need to find a labor unit for the
install of the sonna tube, pouring the concrete and what ever it takes to do the job. The lights are 20' high. I have no idea on what size sonna tube to use. ITs not in the specs. Any help would be greatly appreciated. Merry Christmas All

 

[macmikeman]

I'd talk to the fixture vendor's people for advise on that question, based on their own design standards, not what the project spec calls for. Many times I made good money on CO's by actually reading all the stuff the people that make stuff print about the products, whereas the specifying engineer who wrote the project specs did not bother to read about requirements and called for the wrong products on the job. RS Means x 2 and you probably are ok.

 

[masterinbama]

I use bolt circle (measured diagonally) + 10" for tube size. Our area is 1/6th the height of pole in the ground for steel poles with 2 shoe boxes. That includes any concrete above ground

As in: 20' pole with 3' concrete exposed is 23' / 6 = 3.83' in the ground.

If you only have 6" exposed concrete it is 20.5 / 6 = 3.41' in the ground

We have very hard and stable soil here thes #'s will increase for loamy or sandy soils

But the best thing is to consult a civil engineer if you have any doubts.

 

[ivsenroute]

I was required to use RS Means as a HUD Consultant and found it to be way far off the mark. I would always overestimate and never take the reduction for our area which was a .94 and then I would add 20% to then then round up to the closest thousand.

We could never find contractors to do the work for that money so I just started doubling whatever was in RS Means.

 

[satcom]

I have a commercial job that I'm bidding and I need to find a labor unit for the
install of the sonna tube, pouring the concrete and what ever it takes to do the job. The lights are 20' high. I have no idea on what size sonna tube to use. ITs not in the specs. Any help would be greatly appreciated. Merry Christmas All

We never touch a job like that without a sealed engineering dwg, the liability is way out there with light poles, and there are different soils, wind factors, and other site problems, work with the engineers and the jobs are a snap, a good engineering firm will even help you bid it.

 

[220/221]

Here, on 20' poles we use 24" tube, 30" above grade and 72" below. I've seen 18" tube specified but there is no room to work when they are that small.

Concrete is just under 1 yard per.

Steel is 4, #6 (3/4") verticals with 18" round #4 (1/2") rings every 12"

Bolts (supplied with poles) are 3/4" x 30"

 

[Pierre C Belarge]

We never touch a job like that without a sealed engineering dwg, the liability is way out there with light poles, and there are different soils, wind factors, and other site problems, work with the engineers and the jobs are a snap, a good engineering firm will even help you bid it.

This is so true. The wind load factor for each and every lighting pole will be factored in with the different soil conditions based on the physical location of the pole base itself.

 

[220/221]

Labor units should be minimum 3 hours per hole if you have over 6 poles. Single poles can take up a good part of the day.

This is strictly supervising the drilling and dirt removal, transporting/setting the cages, terminating the conduits, pouring/finishing the concrete, setting the bolts and stripping the tube.

Keep in mind that ANY kind of concrete work can turn to crap real quick.

 

[jmsbrush]

This is so true. The wind load factor for each and every lighting pole will be factored in with the different soil conditions based on the physical location of the pole base itself.

I talked to a friend who is a general contractor today and he asked me why I was even going to attempt the concrete work.
He told me that was the GC's job to take care of and I just needed to worry about installing the conduit.
Is This true Guys?

 

[tkb]

Usually it is the GC's job to dig the holes and the trenches, provide and set the sono tubes, provide and set the rebar, provide and place the concrete. The elevation of the bases and the projection out of the ground should be determined before you start. Make sure the poles are lined up if there are rows and not staggered.

You would provide the anchor bolts and make the templates for the bolts and set them in the concrete. Make sure you get these shipped ahead of the poles. Do not have to much bolt out of the concrete of you will have to cut them later.

Some would say that this is the GC's job, but if you don't do it yourself it can get screwed up. Make sure you have a line to aline the bolts with or else the fixtures will look funny when the poles are erected.