Dig post hole so diameter of the hole is 3 times the width of the post (i.e., the hole for a 4” wood post should be about 12 inches wide). The depth of the hole should be 1/3-1/2 the post height above ground (i.e., a 6-foot tall fence would require a hole depth of at least 2 feet).
How much concrete do I need for a light pole?
About 16 inches of concrete will do the trick, with the post set 12 inches into it. You can also add to the stability of the lamp by digging a deeper hole and lining it with about 6 inches of gravel, says This Old House general contractor Tom Silva.
How deep should a 35 foot pole be buried?
Set any pole with energized conductor 10% + 2 feet deep, i.e. a 35 ft pole should be set 5.5 feet deep.
How deep should a 20 foot pole be in the ground?
Table 4-1 gives recommended depths for poles from 20 to 60 feet long in firm soil and in rock. Most pole standard bases in commercial and retail parking areas are a minimum 6′ deep and they are usually 8′ deep.
How deep should a 12 foot post be in the ground?
In general, holes should be at least 3 feet deep for posts that extend 8 feet or more above ground level. Posts that extend 6 feet above ground level should have holes at least 2 1/2 feet deep.
How do you size a light pole base?
Measure the circumference of the light pole in inches as close to the base as possible. For example, the circumference might be 40 inches. Divide the circumference by 2 times the number pi to get the radius of the base.
How do you anchor a light pole?
Pole Installation Guidelines
- Attach sling to top of pole.
- Attach luminaries and complete wiring.
- Place leveling nuts and washers on anchor bolts.
- Erect pole.
- Position over anchor bolts and set on leveling nut washers.
- Place anchor nuts and washers on anchor bolts and tighten once pole is plumb.
How far down are telephone poles buried?
about 6 ft
The standard utility pole in the United States is about 40 ft (12 m) long and is buried about 6 ft (2 m) in the ground. However, poles can reach heights of 120 ft (37 m) or more to satisfy clearance requirements.
How deep should a flagpole be in the ground?
Make sure the hole is at least 2 feet deep and four to six times the diameter of the pole to accommodate the ground sleeve. It should be included with the purchase of your flagpole.
How do you stabilize a pole in the ground?
How do you stabilize a pole in the ground?
- Take out adjacent fence construction.
- Cut or buy a few tapered (top to bottom) surveyor stakes about 24 inches long.
- Drive a stake into the ground next to the post or next to the concrete.
- Pull the stake.
- Fill the hole with water and level the post.
How big should a 30 foot light pole be?
Wind equals about 25 psf x 20 = 500 lbs. Therefore, the concrete footing has more resistance than the wind on the light at the top of a 30’ pole…and the pole will break before it rotates. The standard for mounting a pole is 2′ plus 1′ for every increment of 10′ of pole. That would mean your minimum depth would be 5′ deep.
What’s the minimum depth to mount a pole?
The standard for mounting a pole is 2′ plus 1′ for every increment of 10′ of pole. That would mean your minimum depth would be 5′ deep. That does not take into account the pole and fixtures EPA rating (which is a wind rating).
What’s the best way to ground a light pole?
1. Oversize the equipment ground (as compared to the phase conductor), to further reduce the potential rise. 2. Construct a ground ring or mat around the pole. Several posts refer to tripping an overcurrent device for a short in a metal light pole.
How deep should I embed a 30-foot light post?
The standard for mounting a pole is 2′ plus 1′ for every increment of 10′ of pole. That would mean your minimum depth would be 5′ deep. That does not take into account the pole and fixtures EPA rating (which is a wind rating). I am guessing in your area the wind rating is somewhere around 70 to 80 mph.
